II and III
II. All living cells require water for survival
III. Al living things are only composed of cells.
The scientific idea that cells are the fundamental structural and organizational unit of all living things and that all cells originate from previously existing cells is known as cell theory. It was first put forth in the middle of the nineteenth century. The fundamental building block of every organism's structure and reproductive process are cells.
The three tenets of the cell theory are:
All living organisms are composed of one or more cells.The cell is the basic unit of structure and organization in organisms.Cells arise from pre-existing cells.The theory was once universally accepted, but now some biologists consider non-cellular entities such as viruses living organisms and thus disagree with the first tenet.
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you aim to chemically synthesize four peptides with the following one-letter amino acid sequences: tiger, panther, cheetah, and cat. a) which one of these peptides will have the lowest pi? give a reason for your answer. you are not expected to calculate the pis of the peptides to answer this question. a qualitative knowledge of the ionization properties of amino acids discussed in class is sufficient to answer this question.
The peptide that has the lowest pI is CHEETHA. This is because of the presence of two acidic amino acids in it.
The isoelectric point or pI of an amino acid is defined as the point at which the net charge of the amino acid is zero or neutral. In the given scenario, the peptide CHEETHA has the lowest pI or isoelectric point. This is because this peptide contains two acidic amino acids known as Glutamate (E) and one weakly basic amino acid known as Histidine (H). Other peptides like TIGER has only one acidic amino acid Glutamate (E) and one basic amino acid Arginine (R).
And peptide PANTHER has only one acidic amino acid Glutamate (E) and two basic amino acids like Arginine (R) and Histidine (H). So this has a high pI. And peptide CAT has neither basic nor acidic amino acid so its pI is neutral.
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What is the name for the kind of growth that occurs when population size is limited by the carrying capacity of its habitat?
The northeastern YNP bison herd grew exponentially between 1902 and 1915, illustrating logistic growth in Figure 5. However, as the population approaches closer to the capacity of its environment, logistic growth is constrained.
In logistic growth, a citizenry's rate of per capita growth declines as it approaches the carrying capacity, a limit imposed by the environment's limited resources ( K).
Although each population pyramid is different, the majority fall into one of three conventional shapes: expansive (young and expanding), constrictive (elderly and contracting), and stagnant (little or no population growth). Let's dig a little more into the patterns these three shapes show regarding a population as well as its requirements.
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what is example of a physical safeguard that individuals can use to protect PII?
PII should be stored in a locked desk, file cabinet, or office that is not accessible, etc.
Administrative safeguards: Policies put in place at the administrative level to protect private information, such as staff training on information handling best practices.
Physical safeguards: Security measures that are put in place on a physical level to protect private data, such as making sure that servers and paper records are protected and under access control.
Technical safeguards: Instruments and practices based on technology that are used to protect sensitive data, such as mandating Common Access Cards for System Access and encrypting computers and emails.
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Mutations in Ssl2 and RNA Polymerase II can alter transcription start site selection. Choose all statements below that are TRUE regarding possible effects of shifting TSS usage at a gene.a.)Use of an alternate TSS is known to introduce mutations in DNA of the corresponding gene.b.)Alteration in length of the transcribed mRNA can affect its stability.c.)Alteration in the length of leader sequence may introduce RNA secondary structure into the resulting mRNA that affect ribosome binding and translation.d.)The TSS may shift far enough downstream that the translation start signal is eliminated from the resulting mRNA.
Out of all statements, a.)Use of an alternate TSS is known to introduce mutations in DNA of the corresponding gene.b.)Alteration in length of the transcribed mRNA can affect its stability. are correct regarding possible effects of shifting TSS usage at a gene for Mutation in Ssl2 and RNA Polymerase II.
The use of alternative transcription start sites (TSSs) is crucial for transcriptional regulation of mammalian gene expression. Numerous single-gene studies on the varied applications of tissue- or temporal-specific alternative TSSs have been conducted as a result of the increased interest in alternative TSSs and their function in genome diversity. On a genetic level, there hasn't been much investigation into alternate TSS utilisation, notably in the central nervous system.
Different techniques of using alternative TSSs can impact gene expression and create diversity. Alternative TSS may affect the amplitude, temporal control, and tissue-specificity of expression at the transcriptional level. Alternative TSS can impact the mRNA's stability and translational effectiveness at the post-transcriptional phase. Alterations in protein levels, functions, or subcellular distribution may result from alternate TSS, which may also produce protein isoforms with distinct amino termini. As a result, research into the temporal flipping of TSSs can shed light on how various protein isoforms are regulated and perhaps even on how they differ in function. Examining transcriptional regulation across the course of developmental time is one method for best identifying differential isoform utilisation.
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Which of the following fresh frozen plasma ABO types would be suitable for transfusion to an AB negative patient?
A. AB negative only.
B. O negative only.
C. AB negative and AB positive only.
D. O negative and O positive only.
AB negative blood type would be suitable for the blood transfusion to an AB negative patient.
The ABO blood type is the most important among all the blood group systems. There are four different types of ABO blood groups namely, A, B, AB and O and are determined by whether or not a particular individual's red cells carry the A, B, both A and B antigens or neither of them.
RhD is an Rh antigen. When the red cell surface contains RhD, the red cells are called RhD positive and when they do not have this antigen, they are referred to as RhD negative. People with AB blood type can receive blood from A,B,AB and O blood types but since the person is RhD negative, therefore, they can only receive blood from the RhD negative person.
Hence, the correct option is A. AB negative only.
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Which condition is evaluated at the G2/M checkpoint?
A.)Precise replication of DNA
B.)Proper spindle formation
C.)Proper spindle assembly
D.)Adequate cell size
Option B, The condition that is evaluated at the G2/M checkpoint is proper spindle formation. the cell will halt the cell cycle and repair the damage before proceeding.
The G2/M checkpoint is a control point in the cell cycle that is responsible for evaluating the conditions that are necessary for the cell to proceed into mitosis. The proper spindle formation apparatus is a structure that forms during interphase and is composed of microtubules that help to separate the chromosomes during cell division. At the G2/M checkpoint, the cell checks that the proper spindle formation apparatus is properly formed and that the chromosomes are properly aligned on it before initiating mitosis. If the proper spindle formation is not properly formed or the chromosomes are not properly aligned, Other condition like precise replication of DNA(A) is evaluated at the G1 checkpoint, proper spindle formation is evaluated at the prophase and Adequate cell size(D) is evaluated at the G2/M checkpoint as well.
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Amino acids, lipids, nucleic acids, and starches are all macromolecules that are found in plants. What is the most likely source of the building blocks of these structures?
A. Organic molecules formed in biochemical pathways like the Calvin Cycle
B. Organic molecules that are consumed by autotrophs
C. Organic molecules formed by the synthesis of polymers
D. Organic molecules synthesized by heterotrophs
Answer:
A. Organic molecules formed in biochemical pathways like the Calvin Cycle
Which of the following attributes is common to both prokaryotic cells and eukaryotic cells?
a. membrane-enclosed organelles
b. a membrane-enclosed nucleus
c. the use of DNA as the information storage molecule
d. the use of proteins as information storage molecules
The use of DNA as the information storage molecule is common to both prokaryotic cells and eukaryotic cells so option C is correct.
Prokaryotic cells and eukaryotic cells are the two sorts of cells that contrast in their structure and organization. The two kinds of cells have DNA as the information storage molecule, which contains the hereditary guidelines for the development and capability of the cell.
Proteins are not utilized as information storage molecules in either prokaryotic or eukaryotic cells. Proteins are synthesized in view of the information put away in the DNA
Proteins are engaged with numerous significant capabilities like enzymes, structural components, and the transport of molecules.
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newly formed blood cells enter circulation from the bone marrow and lymphatic organs by passing through the walls of which of the following?
Answer:
For example, when bone marrow forms new blood cells, the cells must enter the blood supply and can only do so through the large openings of a sinusoid capillary; they cannot pass through the small openings of continuous or fenestrated capillaries
Newly formed blood cells enter circulation from the bone marrow and lymphatic organs by passing through the walls of sinusoids. Therefore, option A is correct.
Sinusoids are specialized blood vessels found in certain organs, particularly in the liver, bone marrow, and spleen. They are characterized by their unique structure, which allows for the exchange of various substances between the blood and the surrounding tissues.
Sinusoids have larger and more irregularly shaped lumens compared to regular capillaries. The walls of sinusoids are discontinuous and contain gaps or fenestrations, allowing for the movement of cells, molecules, and fluids between the bloodstream and the surrounding tissue.
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Your question is incomplete, most probably the full question is this:
Newly formed blood cells enter circulation from the bone marrow and lymphatic organs by passing through the walls of which of the following?
A) Sinosoids
B) Arteries
C) Veins
D) Lymphatic vessels
The common bile duct follows a groove on the posterior surface of the pancreatic head, then pierces the medial wall of the duodenum along with the ____________ through the ampulla of Vater.
The common bile duct pierces the medial wall of the duodenum along with the pancreatic duct through the ampulla of Vater.
he ampulla of Vater is the point at which the common bile duct and pancreatic duct enter the duodenum, and it is located at the major duodenal papilla. The common bile duct follows a groove on the posterior surface of the pancreatic head, known as the superior pancreaticoduodenal groove, before joining the pancreatic duct at the ampulla of Vater.The pancreatic duct, also known as the duct of Wirsung, is a tube-like structure that carries enzymes and bicarbonate from the pancreas to the duodenum, which is the first part of the small intestine. It originates in the tail of the pancreas and runs through the pancreas, joining with the common bile duct at the ampulla of Vater, which is located at the major duodenal papilla. The bicarbonate neutralizes stomach acid, and the enzymes are important for the breakdown of carbohydrates, proteins, and lipids in the small intestine. The duct is lined by cells that secrete a thin layer of bicarbonate-rich fluid, which protects the pancreas and the duct from the acidic secretions of the stomach. Pancreatic duct is essential for the normal function of the pancreas and the digestive system.
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Aspirin therapy has been used after _______________ or recurrent _______________ to reduce the risk of recurrence. Aspirin is contraindicated for anyone with _______________ _______________.
Aspirin therapy has been used after myocardial infarction or recurrent ischemic events to reduce the risk of recurrence. Aspirin is contraindicated for anyone with active bleeding.
What is Aspirin therapy?Aspirin therapy is the use of aspirin, a medication that belongs to a class of drugs called non-steroidal anti-inflammatory drugs (NSAIDs), to prevent or treat certain medical conditions.
Therefore, One of the main uses of aspirin therapy is to reduce the risk of cardiovascular disease. Aspirin works by inhibiting the activity of an enzyme called cyclooxygenase, which is involved in the formation of blood clots. By inhibiting this enzyme, aspirin can help to prevent the formation of clots in the blood vessels, which can reduce the risk of heart attack and stroke.
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Should a supervisor be willing to accept constructive criticism from an employee they supervise?
A.
Yes, but only if the person being supervised has worked there longer than the supervisor.
B.
Maybe, if the supervisor and the person being supervised have worked together for a long time.
C.
No. It is the supervisor’s job to give constructive criticism, not an employee’s job.
D.
Yes. Giving and receiving constructive criticism can eventually make the workplace more positive.
A key strategy for encouraging your finance and accounting team members to continuously lifting the bar on their performance is constructive criticism, which is defined as courteous.
What is Constructive criticism?Employees in the millennial and generation z generations, in particular, look forward to receiving this type of feedback from managers on a frequent basis in order to advance meaningfully in their careers.
Constructive criticism is difficult to convey effectively, though. Managers have a delicate balance to strike between highlighting the good and guiding staff in how to resolve performance issues.
The fact that various employees react differently to feedback doesn't make the process any simpler. Most workers probably accept such criticism with grace.
Therefore, A key strategy for encouraging your finance and accounting team members to continuously lifting the bar on their performance is constructive criticism, which is defined as courteous.
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pick two of the organ systems and describe how they would work together to accomplish some activity or function.
cardiovascular and digestive system, are the two-organ system, that can correlate together to function in the body.
organ system includes many organs which is made of variety of tissues.
cardiovascular system is for, is a system that circulates the blood in the body.
it consists of blood, blood vessels like the arteries, veins, capillaries, and heart.
digestive system is a system, wich includes organ that help in breaking down the food and then absorb the essential nutrient, keeping ou the waste.
it includes,mouth, teeth, esophagus, stomach, liver, pancreas, intestine, rectum, and anus.
The cardiovascular and digestive system works in a way where, digestive system takes out the nutrient from the food and circulatory system with blood circulates carbohydrates, amino acid etc to the whole body.
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The body's two organ systems that can work in tandem to operate are the cardiovascular and digestive systems. The organ system consists of several organs made up of a range of tissues.
The cardiovascular system is responsible for moving blood throughout the body. Blood, blood vessels such arteries, veins, and capillaries, and the heart are all part of it. The digestive system is a system of organs that aid in food breakdown and nutritional absorption while eliminating waste. It consists of the anus, rectum, liver, pancreas, oesophagus, stomach, mouth, teeth, and other internal organ systems. The cardiovascular system and digestive system function in a way where the former removes nutrients from food and the latter circulates blood to carry carbs, amino acids, etc. throughout the body.
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Which of the following factors would increase the amount of oxygen discharged by hemoglobin to peripheral tissues? A) decreased temperature B) increased pH C) increased tissue PO2 D) decreased amounts of DPG E) All of the answers are correct.
None of them are correct for increase the amount of oxygen discharged by hemoglobin to peripheral tissues. Declining pH (increase acid) results in the increase of O2 unloading.
Increased peripheral tissue metabolism, such as reduced pH, increased CO2, increased temperature
The term "unloading" describes oxyhemoglobin's removal of oxygen. The oxygen in the red blood cells diffuses out as the blood passes through the capillaries in our metabolizing tissues. Hemoglobin's affinity for oxygen is reduced by rising temperatures. The affinity declines and hemoglobin unloads as oxyhemoglobin is exposed to hotter conditions in the metabolizing tissues.
An essential tool for understanding how blood carries and releases oxygen is the oxyhemoglobin dissociation curve. Hemoglobin, a protein molecule found inside red blood cells, is the primary carrier of oxygen throughout the body. Although just a small fraction of the total oxygen delivered in the bloodstream is dispersed in blood plasma, oxygen can also be transferred throughout the body in this manner. Only 2% of the blood's oxygen is directly dissolved in plasma, as opposed to 98% of the blood's oxygen that is protein-bound to hemoglobin.
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explain, using a specific example, the potential consequences of the production of a mutant protein to the structure and function of the cells of an organism.
Explain, using a specific example, the potential consequences of the production of a mutant protein to the structure and function of the cells of an organism is that people with sickle cell anemia are not susceptible to malaria because they are hindered by the sickle cell shape.
Mutations are changes that occur in DNA or RNA at the level of gene or chromosome sequences that can be passed on to offspring. Mutations can be caused by internal or external factors that cause changes in amino acids that produce mutant proteins.
The production of mutant proteins will result in the structure and affect the function of the cells of an organism. Basically most mutations do not have a positive impact, such as the production of proteins in red blood cells causing cells to take a crescent shape. The sickle cell form causes various health problems in humans such as blood clots. However, sickle cell anemia sufferers who live in areas with high malaria infection rates will not be susceptible to malaria. This is because the malaria virus cannot attach to red blood cells because red blood cells are sickle-shaped. This can be a slightly advantageous condition, although more negative impact of protein mutations.
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Kavya is a reporter, but she doesn’t work for one news organization. Instead, she reports and writes feature articles for newspapers and magazines, negotiating payment terms each time. What is the BEST way to describe Kavya?
Newspapers and magazines are print periodicals that are published over time at regular intervals.
What are Newspaper?Newspapers used to be published daily or weekly, but occasionally they were also published twice a week, every two weeks, or even monthly. In contrast, magazines were often published weekly, biweekly, monthly, or quarterly (four times a year).
Both newspapers and magazines could be bought either singly or by subscription (in which case the reader pays in advance for a year's worth of publications), frequently at newsstands, supermarkets, book stores, train stations, and other locations.
The key reason to comprehend the distinctions is because newspapers and magazines, even electronic versions, might be found in various locations across a library.
Therefore, Newspapers and magazines are print periodicals that are published over time at regular intervals.
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true/false. opulations of monarch butterflies have been declining for years. there is evidence of this phenomenon at prominent overwintering sites, such as the central coast of california, where tourists flock to see these butterflies.
True, population of monarch butterflies have been declining for years. there is evidence of this phenomenon at prominent overwintering sites, such as the central coast of California, where tourists flock to see these butterflies.
The fact that monarch butterflies used to be discovered in backyards all over the nation makes them as American as apple pie. Monarch butterflies have been raised in schools for generations of students, who have marvelled at the transformation of the striped larvae into the enormous orange-and-black adult butterflies. Legend has it that the monarch's multigenerational migration, which involves animals weighing little than one gramme, travels more than 2,000 kilometers from Mexico to Canada.
When monarchs overwintered in groves, there used to be so many butterflies there that the sound of their wings was likened to a rippling stream or a summer rain. When first published in newspapers, the hordes of monarch butterflies were described as "the personification of happiness," with branches breaking beneath their weight.
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which of the following is the correct rder of organization of genetic material form smallest to largest
The right arrangement of genetic material, from biggest to smallest, is genome, chromosome, gene, and nucleotide. Almost all of an organism's cells contain the whole genome.
Nucleotides: A sugar molecule, a phosphate group, and a nitrogenous base make up the fundamental components of DNA and RNA.
Codons are groups of three nucleotides in DNA or RNA that specify an amino acid by name.
Genes are the fundamental building block of heredity. A gene is a sequence of DNA that codes for a particular protein or functional RNA molecule.
Chromosomes: In the nucleus of eukaryotic cells, these DNA and protein-based structures are responsible for carrying genes.
Genome: The whole collection of genetic material present in a cell of an organism. About 3 billion base pairs of DNA are arranged into 23 chromosomes in the human genome.
Note that the size of the genetic structures, not their complexity or function, is the basis for this arrangement.
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The complete question is:
What is the correct order of organization of genetic material form smallest to largest: Chromosome, Genome, Nucleotide, Gene
When performing an antibody panel, which one of the following antigens will be destroyed by enzyme treatment?
A) Fya
B) Jka
C) E
D) Lua
Fya is the antigens that will be destroyed by enzyme treatment. Fya and Fyb antigens are destroyed when the red blood cells are treated with applicable attention of the proteolytic enzymes ficin, papain, and α- chymotrypsin.
When used in the recommended fashion, this reagent will beget the cohesion( cementing) of red blood cells carrying the Fya antigen. Enzyme treatment enhances the reactivity of alloantibodies to the Rh and Kidd antigens and antibodies to carbohydrate antigens( ABO, H, I, P, and Lewis). Enzyme treatment most generally destroys reactivity to the MNS and Duffy antigens.
Anti-Fya is the most common Duffy antibody set up most constantly in the serum of Caucasians immunized by blood transfusion. The Fya antigen is about 40 times lower immunogenic than the K antigen of the Kell system.
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When a person is standing upright, the weight of anything being lifted and carried in the hands is FIRST reflected onto the:
pelvic girdle.
spinal column.
thigh muscles.
shoulder girdle.
Shoulder girdle is the first place where the weight of anything being lifted and carried in the hands being reflected.
What is the shoulder girdle's primary purpose?The arrangement of bones in the axial skeleton that connect to the arm on either side is known as the shoulder girdle or pectoral girdle. The skeletal attachment between the arm and the trunk is maintained by the shoulder girdle, which is constituted of the shoulder blade and the collar bone (clavicle). The shoulder girdle's three joints are engineered to facilitate a broad range of arm movement at the price of stability.
In our body, how many girdles are there?In the human body, girdles exist in two distinct varieties. A pair of shoulder girdles, they are: The pelvic girdle corresponds to the lower limbs what these are known as pectoral girdles.
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Lectin from the seeds of Dolichos biflorus is a source of which of the following?
anti-A1
anti-A2
anti-B
-BB
Lectin from the seeds of Dolichos biflorus is a type of carbohydrate-binding protein that binds to specific sugars on the surface of cells. It is a source of anti-A1 and anti-A2 lectins.
Which are used to detect the presence of A1 and A2 blood types in humans. It is also a source of anti-B lectin, which is used to detect the presence of B blood type in humans.
Additionally, Dolichos biflorus lectin is a source of BB lectin, which is used to detect the presence of the BB blood type in humans. BB lectin is also used to detect the presence of certain bacteria and fungi. Dolichos biflorus lectin is a useful tool for medical diagnostics and research, as it can be used to detect the presence of different blood types and other microorganisms.
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All of the following would likely reduce the severity of inflammation following CFA use EXCEPT:
using multiple smaller volume injection sites instead of fewer larger volume sites.
maintaining sterility of the antigen solution before it is mixed with the adjuvant.
minimizing the mycobacterial concentration.
using a dilute antigen solution to increase the volume of the CFA/antigen mixture.
maintaining sterility of the antigen solution before it is mixed with the adjuvant
maintaining sterility of the antigen solution before it is mixed with the adjuvant, this would not reduce the severity of inflammation following CFA.
adjuvant is defined as the treatment that enhances an existing medical regimen and also maximize the effectiveness, it given after the primary treatment.
CFA is a mineral oil which contain suspension of either whole/pulverized heat killed mycobacteria, which emulsifies with a solution of antigen to form a water in oil emulsion, used for treatments of patients.
There are many other options of tackling with inflammation, it is nonsteroidal drugs or over the counter drugs like aspirin or Advil or naproxen
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Given the DNA strand below, what mRNA strand would it produce?
T-T-A-C-G-G-C-T-A-A-C-T
(please put a dash between bases in the same manner as seen above)
The supplied DNA strand would result in the mRNA strand "A-A-U-G-C-C-G-A-U-U-G-A." This is because, during transcription, a procedure known as base pairing creates a complementary RNA strand using the DNA strand as a template.
What is DNA?The genetic material that contains instructions for the growth and operation of all living things is called Deoxyribonucleic Acid, or DNA.Nucleotides, which repeating units are known as, are the building blocks of DNA, a lengthy, double-stranded molecule.Each nucleotide consists of a sugar molecule, a phosphate group, and either adenine (A), cytosine (C), guanine (G), or thymine as its nitrogenous base (T).DNA's genetic information is determined by the order of nitrogenous bases in the molecule.The nucleus of eukaryotic cells and the cytoplasm of prokaryotic cells include the chromosomes, which are the structures in which DNA is organised.Before cell division, cells replicate their DNA in order to make sure that each daughter cell has an exact duplicate of the genetic material.The processes of transcription and translation utilise the data stored in DNA to create proteins, which are the structural and functional constituents of cells.To learn more about DNA from the given link :-
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Changes in the external environment alter the integrator which is detected by the , and that information is sent to the sensor: controlled variable controlled variable: sensor controlled variable: set point set point:controlled variable error signal:controlled variable
Homeostasis is a concept. Changes in the internal or external environment are detected by a sensor or receptor. Peripheral chemoreceptors, for example, detect variations in blood pH.
Receptor — a place within the body that detects or receives stimuli, recognizes deviations from normal, and transmits messages to the control center.
Regulated variables are physiological variables that are kept at a constant level, such as blood glucose or core body temperature. Controlled variables, on the other hand, are the activities or rates of processes that contribute to the stability of regulated variables. A change in the internal or external environment is referred to as a stimulus. A stimulus is detected by a receptor.
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Which of the following accurately represents the order of complexity for the components of the body, from least to most complex?cells, tissues, organs, organ systems
The following accurately represents the order of complexity for the components of the body, from least to most complexare are cells, tissues, organs, organ systems
The cell is the smallest unit that makes up the body of living things which consists of three main parts, namely the cell nucleus, cell membrane, and cytoplasm. Inside the cell there is protoplasm which consists of carbohydrates, proteins, fats, and nucleic acids. Groups of cells that have the same structure and function form a network. Examples of epithelial tissue, connective tissue, muscle tissue.
An organ is a collection of tissues that have one or more functions Examples of human organs are the heart, liver and lungs. Groups of organs that work together to form a continuous function are called organ systems such as the digestive system. Then the order of complexity of the body from simple to complex, namely cells, tissues, organs, organ systems
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a person who eats excessively and never seems to feel full may have which of the following conditions?
A person who eats excessively and never seems to feel full may have tumor in hypothalamus.
since hypothalamus controls the appetite, the damage/tumor can change the appetite.
hypothalamus is small part of the brain which plays an important role in homeostasis, it is located at the base of the brain and near the pituitary gland.
homeostasis can be defined as the means for keeping the internal state of the body as constant as possible.
when there is abnormal growth in the hypothalamus, due to environment and genetic factors , hypothalamic tumor occurs.
irrespective of tumor, if the hypothalamus is damaged there will be disruptions in body temperature and regulation, growth and weight is affected, sodium and water balance and sleep cycles will be affected.
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if one of the reactants is added to a system initially at equilibrium, then the reaction will proceed in the
if one of the reactants is added to a system initially at equilibrium, then the reaction will proceed in the forward direction, towards the product formation.
system is in equilibrium means that the rate of forward and backward reactions are equal.
when we add a reactant to an equilibrium stage, te reaction moves in a forward direction and rate of forward reaction increases.
when the reactant is consumed, the forward reaction is slow and the equilibrium state is maintained again.
this could also be explained using Le Chatelier's Principle .
it can also be explained with an example, where if H2 is added to I, the reaction rates moves forward and HI is produced in the process.
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When an organism joins a new population, its genes become part of the new population's pool. How does this gene flow affect populations? Question 1 options: Gene flow between populations has no effect on the gene pool. Gene flow between populations increases genetic diversity over time. Gene flow increases the chance for reproductive isolation which can cause new species to form. Gene flow between populations decreases genetic diversity over time.
Whithin a single population, as migration and successfull reproduction occur, Gene flow between populations increases genetic diversity over time. Option B.
What is gene flow?
Gene flow is an evolutive force, together with natural selection and genetic drift.
Gene flow occurs in populations that express migration. This is, individuals from one population migrate to the other and vice versa.
For gene flow to occur, migration is not enough. Successful mating events must also occur, through which individuals from one population get to mate with individuals with the other population, and produce fertile offspring.
This is how the following generations will get genes from both populations.
Gene flow has the opposite effects of genetic drift.
• It increases variability within each population
• It reduces genetic heterogeneity between populations
Different populations experiencing gene flow tend to be more similar genetically because they are interchanging genetic material.
Assuming we are making reference to a single population, the correct option is B) Gene flow between populations increases genetic diversity over time ⇒ within a population.
As new individuals enter the population and reproduce, new genes are part of the population genome, increasing its diversity.
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The ______ produces plasma-membrane-associated proteins, which are then sent to the ______ for sorting and processing.
Plasma-membrane-associated proteins are produced in the rough ER and subsequently transported to the Golgi complex for processing.
What is plasma-membrane?The plasma membrane, also referred to as the cell surface, is a membrane that exists in all cells and separates the cell's internal environment from the outside world. Bacterial or plant cells have a cell wall attached to the cell membrane from the outside. The plasma membrane is referred to as a selectively permeable membrane due to the fact that it regulates how substances enter and leave the cell. It suggests that although the plasma membrane allows some substances to traverse it, it also blocks the passage of others.
How is plasma membrane formed?Between the phospholipid membrane's hydrophobic tails, cholesterol is folded. On the extracellular surface of the membrane, carbohydrates have been discovered to be bound to lipids or proteins, resulting in the production of glycolipids or glycoproteins.
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You can recognize digestive enzymes by their: a) size. b) locations. c) pH levels. d) names. d) names (often refers to what it digests).
You can recognize digestive enzymes by their names.
Digestive enzymes are proteins that catalyze chemical reactions in the body that break down food molecules into smaller molecules that can be easily absorbed and used by the body.
Different types of enzymes have different names, often based on the type of food molecule that they break down, such as amylase for breaking down carbohydrates, lipase for breaking down fats, and protease for breaking down proteins.
While location, pH levels and size can be a characteristic of enzymes, it is not a definitive way to recognize them.
Therefore, one can recognize digestive enzymes by their names (often refers to what it digests).
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