Histones serve as structural proteins. Histones are encircled by DNA, which gives chromosomes their structure. Histones can be changed by adding or removing chemical groups like methyl or acetyl groups.
What protein helps a chromosome maintain its structural integrity?A chromosome's structural support is provided by a protein called a histone. Each chromosome has a long DNA molecule that must fit into the cell nucleus. By wrapping around histone protein complexes, the DNA achieves this and gives the chromosome a more compact shape.
Who or what is responsible for suppressing gene expression?Posttranscriptional gene silencing (PTGS) and transcriptional gene silencing (TGS) both work to degrade already-existing RNA. Although the outcomes are comparable, TGS's processes are species-specific, as are PTGS. De novo DNA methylation is connected to gene silencing in the majority of eukaryotes.
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from what you learned in the video, how does blood glucose level change (or not change) in a non-diabetic human?
Answer:
it increases or decreases
Explanation:
which respiratory-associated muscles would contract or relax during forced expiration, for example blowing up a balloon?
The internal intercostal and abdominal muscles would contract or relax during forced expiration.
The intercostals, parasternals, scalene, and neck muscles of the rib cage, which mostly affect the upper section of the rib cage (pulmonary rib cage), are both inspiratory and expiratory muscles. The abdominal muscles have an expiratory function and work on the rib cage and abdomen. In order to expel air from the lungs during expiration, the abdominal wall contracts concentrically while the diaphragm contracts eccentrically in tandem with the elastic recoil of the lung tissue.
The abdominal muscles are primarily responsible for forcing expiration. For physiologic processes like coughing and properly responding to a gag reflex, these muscles must be under good control. Both of these activities are essential for health and security.
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what are the two basic types of ecological succession which are categorized mainly based on how many nutrients - or lack thereof - are already present in the soil after the disturbance?
The two basic types of ecological succession are Primary and Secondary.
What is Ecological succession ?Ecological succession is the process of change in an ecological community's species composition over time. The time frame can span several decades or fewer (for instance, following a wildfire).The cycling of nutrients like carbon, nitrogen, and sulphur is made possible by bacteria.The community grows through an increase in complexity from a small number of pioneering plants and animals to a stable or self-sustaining climax community. The effects of established organisms on their own settings serve as the "engine" of succession and the reason why ecosystems evolve. Living has the effect of changing one's environment, sometimes subtly and sometimes blatantly.To learn more about Ecological succession refer to:
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nlrs differ from tlrs by . . . choose one:a. being present on the pathogen rather than the host cell.b. detecting mamps in the cytoplasm rather than external to the cell.c. triggering only adaptive immunity rather than innate
By recognizing MAMPS inside the cell as opposed to outside it, NLRS differ from TLRS. RLRs recognize pathogen genome, while NLRs mostly detect intracellular bacteria.
Two important types of innate immune sensors, Toll-like receptors (TLRs) and Nod-like receptors (NLRs), offer prompt responses to pathogenic invasion or tissue damage. By interacting with damage/danger-associated molecular patterns (DAMPs), pathogen/microbe-associated molecular patterns (MAMPs), pathogen-associated molecular patterns (PAMPs), and xenobiotic-associated molecular patterns (MAMPS ), the TLRs become activated.
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What explanation of inheritance suggests that hereditary traits are determined by discrete units that are transmitted from one generation to the next?.
Particulate inheritance is the explanation of inheritance suggests that hereditary traits are determined by discrete units that are transmitted from one generation to the next.
Particulate inheritance is a pattern of inheritance discovered by Mendelian genetics theorists such as William Bateson, Ronald Fisher, and Gregor Mendel himself, demonstrating that phenotypic traits can be passed down from generation to generation via "discrete particles" known as genes, which can retain their ability to be expressed while not always appearing in descending generations.
These principles make up the system of particulate inheritance by units, or genes. Mendel's two basic laws, known as the law of segregation and the law of independent assortment, were later supported by the discovery of chromosomes as carriers of genetic units. This was a significant step forward from blending inheritance because it explained how heritable variation can persist across multiple generations.
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Choose the CORRECT statement that reflects the differences between the somatic and autonomic nervous systems.
The SNS only uses the neurotransmitter norepinephrine, while the ANS only uses the neurotransmitter acetylcholine.
The SNS is a two-neuron system, while the ANS is a one-neuron system.
The SNS is excitatory, while the ANS is both excitatory and inhibitory.
The SNS innervates cardiac muscle, while the ANS innervates skeletal muscle.
The SNS can innervate glands, while the ANS cannot innervate glands.
(the SNS is excitatory, while the ANS is both excitatory and inhibitory)
The CORRECT statement that reflects the differences between the somatic and autonomic nervous systems is while the ANS is both excitatory and inhibiting in GI, the SNS is excitatory.
While also controlling mucosal secretion and GI blood flow through neurally mediated vasoconstriction, the sympathetic nervous system has a primarily inhibitory impact on GI muscle. Contrarily, the parasympathetic nervous system controls the tone and motility of the stomach and intestines including milling, absorption, secretion, and defecation by acting in both an excitatory and an inhibitory manner. This suggests a more complex and finely tuned role for the parasympathetic nervous system in GI activity. The autonomic nerve system is in charge of GI functions.
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excess fluid consumption can result in a condition called . multiple choice chronic hypotension terminal osmosis idiopathic rehydration water intoxication
Excess fluid consumption can result in a condition called water intoxication.
Water intoxication is a condition that arises as a result of drinking too much water. This occurs when you drink more than a liter of water in an hour, causing your kidneys to work harder. When you drink mostly water, the body will be prone to hyponatremia, a condition in which the salt level in the blood is lower than normal. This happens because the excess air in the body will "dissolve" the salt (sodium) so that the salt level will be relatively lower.
Sodium is an important component in fluid and electrolyte balance in the body. A lack of sodium can make fluids in the body attracted to cells, such as brain cells. As a result, the cells will swell and cause several significant symptoms such as impaired consciousness and even life-threatening.
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What name is given to the process in which a strand of dna is used as a template for the manufacture of a strand of pre-mrna? what name is given to the process in which a strand of dna is used as a template for the manufacture of a strand of pre-mrna? rna processing gene expression polypeptide formation transcription translation.
During transcription, the DNA of a gene serves as a template for complementary base pairing, and an enzyme called RNA polymerase II catalyzes the formation of a pre-mRNA molecule.
Transcription begins when RNA polymerase binds to a promoter sequence near the start of a gene directly or through helper proteins. RNA polymerase uses one of the DNA strands, the template strand, as a template to make a new complementary RNA molecule. Transcription ends in a process called termination. Transcription is the process by which information from a DNA strand is copied into a new messenger RNA (mRNA) molecule. DNA and Protein Synthesis The process of making mRNA from DNA is called transcription and occurs in the nucleus. The mRNA directs protein synthesis, which occurs in the cytoplasm. The mRNA formed in the nucleus is transported out of the nucleus and into the cytoplasm where it binds to ribosomes.
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which means of particle transport is shown in the figure below
Answer: Exocytosis
Explanation:
Ethane, C2H6, reacts with oxygen to make carbon dioxide and water. The
equation can be written as: C2H6+02 → CO2 + H20. Using the equation,
what are the products?
O CO2 + H20.
OC2H6+02
OC2H6
O 02 + H20
The products of the above reaction are carbondioxide and water i.e. CO₂ + H₂0 (option A).
What is a chemical reaction?Chemical reaction is the process, typically involving the breaking or making of interatomic bonds, in which one or more substances are changed into others.
A chemical reaction involves substances called reactants forming other new substances called products.
According to this question, Ethane reacts with oxygen to form carbon dioxide and water as follows:
C₂H₆ + 0₂ → CO₂ + H₂0
Based on the above equation, glucose and oxygen are the reactants while carbondioxide and water are the products.
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what would be the phenotypic ratio of offspring if a balck and white hen has chicks with a ablack andw hiter ooster
We examine a alleles of the parent organisms and predict how frequently the offspring will exhibit those genes to determine a phenotypic ratio. Most of the time, we are aware of the expression and appearance of the alleles.
What happens whenever a black chicken and a white chicken are crossed?The offspring's genotype will be BW.When both alleles express in the phenotypic and neither of these two alleles is able to predominate over the other, the color of the feathers will be black and white.
What results from crossing a black-and-white chicken?It would result in progeny that were half black and half white if bred back to the father of these birds.
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\make connections if you arrested a human cell in metaphase i of meiosis and applied this technique, what would you observe? how would this differ from what you would see in me
The cell's tetrads gather on the metaphase plate, which is situated in the middle of the cell's two opposing ends, during metaphase one. A single cell divides twice during a process called meiosis.
The spindle fiber's then catch hold of the centromeres on each chromosome to attach themselves to them. Before proceeding to the following stage of meiosis I, the cell then verifies if the chromosomes are correctly positioned. The meiosis process has a single, brief stage called the metaphase that happens twice, once during meiosis I and once during meiosis II. A single cell divides twice to produce four haploid daughter cells during the meiotic process. The gametes, or sperm and egg in males and females respectively, are these cells.
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Information received by sensory cells is conveyed to the central nervous system in the form of impulses along afferent fibers. In order for this to happen when the receptor cell is not a neuron, its receptor potential ______.
In order to convey the information received by sensory cell, the receptor cell must be transferred to a neuron
Sensory transduction is carried out by two main categories of cellular systems. In the first, a neuron collaborates with a sensory receptor, a cell, or a cell process that has been designed specifically to interact with and detect a given stimuli. The afferent neuron that is connected to the sensory receptor is activated when it is stimulated, and it then sends information about the stimulus to the central nervous system. The second sort of sensory transduction involves a sensory nerve ending reacting to an environmental stimuli, either internal or external.
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a food web and an energy pyramid are represented below. a group of organisms from the food web carry our the life process of respiration?
A food chain is a group of organisms that eat one another, allowing energy and nutrients to flow from one to the next.
In ecostem, a food web is made up of all the food chains in one ecosystem. Every living thing in an ecosystem is a part of several food chains. Each food chain represents one possible path for energy and nutrients as they move through the ecosystem. A food web is made up of all of the interconnected and overlapping food chains in an ecosystem.
Many different food chains and trophic levels are linked by food webs. Food webs can support long and complicated food chains as well as very short ones.
For example, grass in a forest clearing uses photosynthesis to produce its own food. A rabbit consumes grass. The rabbit is devoured by a fox. When a fox dies, decomposers like worms and mushrooms decompose its body and return it to the soil, where it provides nutrients to plants like grass.
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A microsleep is dangerous because __________. a. the loss of control can lead to accidents b. a person goes into a coma during a microsleep c. microsleeps occur only during the early evening d. there is no cure or treatment for microsleeps
Microsleeps are risky since the loss of control might result in mishaps. Microsleep can occur when a person is driving, which makes it very hazardous.
What exactly is microsleep and why is it important?Microsleep is often regarded as sleep periods that last 15 seconds or less 7. People who experience microsleep episodes lose conscious control over how they behave. By examining the phenomenon in both humans and animals, scientists are trying to better understand what happens in the brain during microsleep. 9.
How should microsleep be handled?It's critical that you get adequate shut-eye at night in order to treat and prevent instances of microsleep. Adults need between seven and nine hours of sleep per night to function properly.
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Answer:
A) the loss of control can lead to accidents.
Explanation:
e2022
Explain how a change in the subunits of a polymer may lead to changes in structure or function of the macromolecule.
They consists of the proteins , nucleic acids polymers and sequences of macromolecules that can evolve and changed the composition, that leads to evolutionary change and hence structural diversity .
Macromolecules are polymers, which are long chains of subunits called monomers. These subunits are often very similar to each other, and for all the diversity of polymers.
Proteins are one of the important and abundant organic molecules in living systems and have the most diverse range of functions from all the macromolecules. Their are Many properties of protein they can be structural, regulatory, contractile, or protective and also serve in transport, storage, or membranes.
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When are clinicians allowed to consult with other clinicians about a client’s diagnosis?.
When the clinician needs help in order to treat their patient.
Why might a therapist offer a diagnosis to a patient?The diagnosis is a tool that enables her to comprehend how she can first assist her clients and that directs her interventions and therapeutic strategy as the course of therapy moves forward. Additionally, it can lower the cost of receiving mental health treatment.
Therapists may offer a diagnosis why?To work in the mental health industry, therapists need master's degrees and authorization from their licensing authorities. A treatment plan is created by therapists who also provide mental health diagnoses. If they have misrepresented themselves, it might be appropriate to provide the correct diagnosis. A patient has a right to information about their health so they can advocate for themselves or make sure they are getting the best care possible.
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many viruses cause what are referred to as flu-like symptoms as a result of the body's response to the infection. these symptoms include .
White blood cells, antibodies, and other mechanisms go to work ridding your body of the foreign invader. In fact, many of the symptoms that a person suffers during an infection (fever, malaise, headache, rash) are the result of the activities of the immune system trying to clear the infection from the body.
The flu is a contagious respiratory illness caused by influenza viruses that infect the nose, throat, and sometimes the lungs. Influenza-like illness (ILI), also called “influenza-like illness,” is a broader category. The CDC says that with ILI, you have a fever of at least 100 F and a cough or sore throat, but the cause of the symptoms is unknown. Colds are minor infections of the nose and throat caused by more than 200 different viruses. Rhinovirus is the most common cause, accounting for 10 to 40 percent of colds. Other common cold viruses include the coronavirus and respiratory syncytial virus (RSV). The flu is caused solely by influenza viruses, while the common cold can be caused by several different viruses, including rhinoviruses, parainfluenza, and seasonal coronaviruses. Seasonal coronaviruses should not be confused with SARS-CoV-2, the virus that causes COVID-19.
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many plants in tropical rainforests have stomata that are continuously open. if water levels in the soil decrease, but there is still enough water to support normal levels of photosynthesis, what would you also expect to observe?
many plants in tropical rainforests have stomata that are continuously open. Rainfall levels will decrease if water levels in the soil decrease, but there is still enough water to support normal levels of photosynthesis.
Tropical rainforests are wildernesses that take place in regions of tropical rainforest climate in which there is no extremely dry - all seasons have at least a 50 inches of precipitation - and also are known as lowland equatorial evergreen rainforests. Stomata are cell structures in the epidermis of tree leaves and needles that help plants exchange carbon dioxide and water with the atmosphere.
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the depolarization of membrane potential causes which of the following changes to occur across plasma membrane? question 3 options: the cytosolic side of plasma membrane develops - charge while extracellular side develops charge the cytosolic side of plasma membrane develops charge while extracellular side develops - charge both cytosolic and extracellular side develop charge both cytosolic and extracellular side develop - charge
The cytosolic side of the plasma membrane acquires a positive charge as a result of the depolarization of the membrane potential, whereas the extracellular side of the plasma membrane develops a negative charge.
The differential in electric potential across a cell's plasma membrane is known as membrane potential.
A membrane is considered to be polarized when it has a positive charge on the extracellular side and a negative charge on the cytosolic side.
The distribution of charge across the membrane changes during depolarization, which happens when the membrane potential becomes less negative.
As a result, the extracellular side acquires a negative charge, whereas the cytosolic side acquires a positive charge.
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Which postulate of natural selection is deliberately enforced by dog breeders using artificial selection?.
Dogs Breeders use artificial selection rather than natural selection to determine survival and reproduction.
What is the underlying theory behind animal natural selection?An evolutionary mechanism is natural selection. Environment-adapted organisms are more likely to endure and pass on the genes that made them successful. As a result of this strategy, species eventually develop and diverge.
What is the natural selection theory's alternate name?The term "theory of evolution" is most often used to refer to the concept first proposed by Charles Darwin and Alfred Russel Wallace in the nineteenth century.
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do we need to be concerned with the wave nature of the blood cells when we describe the flow of blood in the body?
The blood cells need to be concerned wgen under the Broglie's relation it's no concern issues.
If we begin from de Broglie's relation
lambda=frac λ= mvh and insert the given values lambda=frac 63 instances 10^} instances 4 times 10^}=1.66 10^textrmλ= 10 −14 ×4×10 −3 6.63×10 −34 =1.6610 −17 m lambdaλ is simply too small so we don't have any issues approximately wave nature of the blood cells.
λ=1.6610 −17 m that is too small so we don't have any issues approximately wave nature of the blood cells.
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multiple select question select all that apply of the four types of chromosomal rearrangements, which ones change the total number of nucleotides? multiple select question. duplications deletions inversions reciprocal translocations
The correct options are duplications and deletions. Both these chromosomal rearrangements are types where total number of nucleotides get changed.
Chromosome rearrangements involve missing, duplicated (additional copies), or rearranged sections of chromosomes. The results differ. They rely on the chromosomes involved and the manner of their rearrangement. Some have little impact, some can't coexist with life, while others fall somewhere in the middle. In the context of genomics, duplication is a form of mutation in which one or more copies of a DNA segment are created. This DNA segment might be as tiny as a few bases or as large as a significant chromosomal region. All creatures experience duplications. When a chromosome breaks, some genetic material is lost, which is known as a deletion. Anywhere along a chromosome, deletions can be tiny or massive. Duplications. When a portion of a chromosome is improperly copied, duplications happen (duplicated).
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The cubes below are models of cells made of a jellylike material. One cube is
intact, and the other has been cut into eight smaller cubes.
1 cm
1 cm
Which statement is true for cells represented by these models?
A. There is more total surface area on the eight smaller cells than
there is on the one large cell.
B. There is more total volume in the eight smaller cells than there is
in the one large cell.
C. There is no difference in the ratio of the surface area to the
volume between the large cell and one of the eight smaller cells
(C) There is more total surface area with the eight smaller cubes than there is in the one large cube.
What is Surface area?
The surface area of an object refers to the overall space filled by its surfaces. Using the formulas, it is simple to determine the surface areas of various 3D shapes in geometry.
What is Cube?
A solid shape with six square faces is called a cube. Because every square face has the same side length, each face is the same size. A cube has 8 vertices and 12 edges. An intersection of three cube edges is referred to as a vertex. The size of a cube's exterior surface is used to determine its overall surface area. The surface area of a cube is equal to 6, the area of one face since a cube has six square faces, each of which is the same size.
(C) There is more total surface area with the eight smaller cubes than there is in the one large cube.
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What does Biology study?
A.) the structure and function of living organisms.
B.) the classification of living organisms.
C.) the interactions of living organisms.
D.) all of the above
Which letter choice is correct? A, B, C, or D?
T/F? For humans, food is the only source of vitamin D.
Answer:
False
Explanation: Unlike other nutrients, human body is capable of producing vitamin D upon exposure to UV rays from the Sun
Find the similarity between the shape of bullet train and the shark. What is the name of this kind of shape? Also, tell the reason behind such a shape
The similarity between the shape of bullet train and the shark is both are streamlined.
A streamlined body is a shape that reduces the friction drag between a fluid, such as air or water, and a moving object. Its unique body shape provides very little resistance to air and water. The water surface of airplanes and ships is streamlined to reduce fluid friction.
These structures have a streamlined profile with a fusiform design that resembles an elongate teardrop with a rounded leading edge that extends to a maximum thickness and a slowly tapering tail.
The streamlined shape of high-speed bullet trains aids in the reduction of air drag or fluid friction acting on the train. When an object moves through air, it encounters air resistance, which is nothing more than a drag that slows the object's speed.
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of the seven iucn categories of protected marine areas, which one intends maximum protection, and which one is designed to benefit species and ecosystems, respectively?
A protected area, according to the IUCN, is a clearly defined geographic area that is ecosystems acknowledged, designated, and managed in order to ensure long-term conservation
Preserving the ecosystems that animals and plants require to exist is the best method to protect endangered species and biodiversity. The environment in which all animals and plants exist will be protected by energy conservation and judicious resource utilization.
In order to protect biodiversity, maintain ecosystem balance, preserve important habitats, increase resilience to climate change, ensure global food security, maintain water quality, conserve natural resources, promote economic success, and stop the.
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which are found entirely attached to the pons, and which are located in the groove between the pons and medulla?
Bony Clivus are found entirely attached to the pons and Cerebellar peduncle are located in the groove between the pons and medulla.
Pons is the forepart of the hindbrain arranged before the cerebellum. Pons is nonstop behind and underneath with the medulla oblongata. Pons is isolated from medulla in front by a wrinkle in which the abducent, facial, and acoustic nerves show up. Trigeminal nerves arise at the intersection of pons and center cerebellar peduncle.
Foremost surface of pons is raised and has a sulcus in midline called basilar sulcus which is involved by basilar vein. Better surface of pons is connected than predominant cerebellar corridor and lower surface is connected with foremost substandard cerebellar supply route. Back surface of pons is concealed by cerebellum and limited horizontally by unrivaled cerebellar peduncle .
On one or the other side of the lower part of the pons there is a locale called cerebellopontine point. The facial, vestibulocochlear, glossopharyngeal nerves; apprehensive intermedius; and complex veins lie around here
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complementary proteins are 2 or more proteins that are combined so that the essential amino acids that are missing from one are provided by the other.
Due to the fact that when combined, grains and legumes provide all nine essential amino acids, grains and legumes are referred to as complementary proteins.
How do contrasting proteins combine?All the required amino acids can be adequately supplied by combining two or more foods with incomplete proteins to create complementary proteins. As long as you obtain enough of each protein during the day's meals, complementary proteins don't have to be consumed together.
What proteins are regarded as complimentary proteins?Due to the fact that when combined, grains and legumes provide all nine essential amino acids, grains and legumes are referred to as complementary proteins. Because they include tryptophan, methionine, and cysteine, nuts and seeds are a good complement to legumes.
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