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▹ Answer
B. During Meiosis
▹ Step-by-Step Explanation
During Meiosis is when the cell division occurs, and this is generally where the mutation will be caused. Down syndrome is caused from extra material from chromosome 21. It is generally caused by having 3 copies, rather than the regular two copies it should have.
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Answer: The answer is B
Explanation: it is because something forgot to seperate
why is rna shorter than DNA?
Answer:
RNA is much shorter than DNA. DNA contains the code for making lots and lots of different proteins as well as DNA contains all the genetic in formation of the body whereas RNA does not contains
Explanation:
i hope this will help you :)
Determine whether the given procedure results in a binomial distribution (or a distribution that can be treated as binomial). If the procedure is not binomial, identify at least one requirement that is not satisfied. The YSORT method of gender selection, developed by the Genetics & IVF Institute, was designed to increase the likelihood that a baby will be a boy. When 150 couples use the YSORT method and give birth to 150 babies, the genders of the babies are recorded. Does the procedure represent a binomial distribution? A. No, because there are more than two categories for each trial. B. No, because the trials of the procedure are not independent. C. Yes, because the procedure satisfies all the criteria for a binomial distribution. D. No, because the probability of success differs from trial to trial.
Answer:
The correct answer is C)
Explanation:
The number of couples who used YSORT method (x) = 150That is, the number of couples who used YSORT method is limited or defined or definite.The probability of giving birth to a boy, for each couple is 1/2 or 0.5The gender of the baby born in each case mutually exclusive (Independent)
We can conclude that the procedure results in a binomial distribution because the assumptions of the binomial distribution are met.
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What is one disadvantage of using solar energy?
A. Solar energy produces greenhouse gases.
B. Solar panels are very inexpensive.
C. Solar energy is available only in the summer.
D. Solar panels work well only in sunny areas.
Answer:
A. Solar energy produces greenhouse gases.
Explanation:
Solar energy produces Infrared radiation. Which is the outgoing heat from earth to space during the night.
Sodium is transported out of a cell through a transport protein from an area of lower concentration to an area of higher concentration with the use of ATP. Which type of membrane transport is involved in this process?
Active transport through a channel protein that is open when ATP attaches and is hydrolyzed to ADP.
Which organelles are found only in plant cells and not in animal cells?
Answer:
Plant cells have a cell wall, chloroplasts and other specialized plastids, and a large central vacuole, which are not found within animal cells. The cell wall is a rigid covering that protects the cell, provides structural support, and gives shape to the cell.
Which land feature supports the theory of continental drift?
canyons
volcanoes
coal fields
Oceans
Help plz
Answer:
The correct option is;
Canyons
Explanation:
The theory of continental drift, which was a 1596 hypothesis of Abraham Ortelius, is that the continents on Earth have had relative motion with one another over a period of geologic time such that the continents looks to haven drifting motion over the bed of the ocean
Evidence of the motion of the continents was first presented by Alfred Wegener in 1912 and continuing exploration of the ocean floor by Harry Hammond Hess has revealed that the there are lots of canyons, sea mountains such that the crust of the Earth moved apart on the facing sides of the ocean ridge which where evidence of sea floor spreading supporting the theory of continental drift.
THE ANSWER IS COAL FIELDS NEARLY EVERYONE POSTING THIS PUT CANYONS AND IS NOT RIGHT. I just took the quiz and put coal fields and got it right. No gimmicks. This the true answer.
The chemical equation of photosynthesis includes 602. Which best describes this substance?
a solid used during photosynthesis.
a gas used during photosynthesis.
a liquid produced during photosynthesis.
a gas produced during photosynthesis.
Answer:
The correct option is;
A gas produced during photosynthesis
Explanation:
The chemical reaction of photosynthesis is given as follows;
6CO₂(g) + 6H₂O(l) + Energy from light → C₆H₁₂O₆(s) + 6O₂(g)
Therefore, six molecules of gaseous carbon dioxide (CO₂) combine withe six molecules of liquid water (H₂O) in the presence of energy from Sunlight to produce one molecule of solid glucose (C₆H₁₂O₆) and six molecules of gaseous oxygen (O₂)
The 6O₂ is the gaseous oxygen produced as a byproduct of photosynthesis
Answer:
D
Explanation:
The fuel for nuclear power plants comes from
Answer:
Most nuclear reactors are fueled with a compound known as uranium dioxide. This uranium dioxide is put together in a fuel assembly and inserted into the nuclear reactor—where it can stay for several months or up to a few years. While in the reactor the fuel undergoes nuclear fission and releases energy
Explanation:
Answer:
Uranium is the most widely used fuel by nuclear power plants for nuclear fission. Nuclear power plants use a certain type of uranium—U-235—as fuel because its atoms are easily split apart. Although uranium is about 100 times more common than silver, U-235 is relatively rare at just over 0.7% of natural uranium.
In response to high amounts of phosphate transport into the cell: a. PhoR is phosphorylated by the phosphate transporter protein Pst b. PhoR binds with PhoB to remove PhoB repression of phosphate regulon genes c. PhoR is exported out of the cell to scavenge phosphate molecules d. PhoU changes conformation to allow PhoR to autophosphorylate e. PhoU keeps PhoR bound to the phosphate transporter protein Pst
Answer:
e. PhoU keeps PhoR bound to the phosphate transporter protein Pst
Explanation:
PhoU is a membrane protein known to regulate the transport of phosphate (Pi) between cellular compartments. It has been discovered that mutations in this protein cause lethality because the cell becomes incapable of controlling the intracellular levels of Pi, this being toxic for the cell. PhoR is a histidine kinase/phosphatase. When the Pi level is considered to be a limiting factor, PhoR autophosphorylates at a histidine residue and then donates its phosphoryl group to PhoB. On the other hand, when the Pi level is high, this protein removes the phosphoryl group from phospho-PhoB. Finally, the Pst is a signal transduction protein that acts as a transporter capable of switching its conformation during the transport of PI.
State the characteristic of tracheoles that help with gaseous exchange
in insects.
Answer:
made up of a single epithelium layer to allow diffusion of gases.terminal ends of fine tracheoles are filled with a fluid in which gases dissolve and therefore transported in solution formSome viruses can be crystallized and their structures analyzed. One such virus is yellow mottle virus, which infects beans. This virus has a single-stranded RNA genome containing about 6300 nucleotides. Its capsid is 25-30 nm in diameter and contains 180 identical capsomeres.If the yellow mottle virus begins its infection of a cell by using its genome as mRNA, which of the following would you expect to be able to measure?
A) replication rate
B) transcription rate
C) translation rate
D) formation of new transcription factors
The correct answer is 9 proteins form each of the 20 facets of this virus. A capsid is the protein shell that surrounds a virus. A capsomere is the subunit of the capsid. Depending on the virus, capsomeres arrange in many different shapes to form the capsid. The yellow mottle virus has 20 facets, this means that it has an icosahedral capsid. Since it contains 180 identical capsomeres, we can conclude that 9 proteins form each facet.
sketch and label a eukaryotic cell for animal and plant
Answer:
Here is a diagram of eukaryotic cells! hope it helps
Explanation:
3 types of protozoan diseases and their causative parasites
Answer:
Malaria, Leishmaniasis, and Toxoplasmosis.
Malaria is caused by Plasmodium parasites.
Leishmaniasis is caused by infection with Leishmania parasites.
Toxoplasmosis is an infection caused by a parasite that is called Toxoplasma gondii.
Proteins in the cell membrane have many functions. Which type of protein would be able to transport materials in or out of the cell, and signal other cells? A. Integral proteins B. Glycoproteins C. Pore proteins D. Endoplasmic proteins
Answer:Integral proteins
Explanation: according to a video lesson in Founder Education
Integral proteins present in the cell membrane help in the transportation of materials and the signaling of other cells.
What are integral proteins and their functions?Integral proteins are the proteins attached permanently to the plasma membrane and are embedded in the whole layer of the membrane.They are also known as intrinsic proteins.Functions of intrinsic proteins:Transportation: Hydrophilic compounds may be able to get through the cell membrane due to intrinsic proteins.Signal transduction: A binding site may be present in certain membrane proteins. These binding sites have distinctive structures that closely resemble those of chemical messengers. A receptor membrane protein that is placed inside the cell wall will link with a hormone when it comes into contact with the cell wall. Depending on the type of hormone or other chemicals, the hormone can alter the receptor protein and induce a certain reaction to occur inside the cell.Learn more about membrane proteins here:
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Together, the stages of cellular respiration break down one molecule of ___ to generate a total of ____ molecules of ATP. The remaining energy is released as __ .
Answer:
1) Glucose
2) 36
3) Heat
Explanation:
Cellular respiration is a metabolic process that every living organism undergo. It is the process by which energy is obtained by living cells. In the process of celluar respiration, energy-storing food molecule called Glucose is broken down in the presence of oxygen in order to release its energy and convert it to a usable form by the cell called ATP.
Celluar respiration occurs in three distinct stages in eukaryotes viz: Glycolysis Kreb's cycle and Oxidative phosphorylation. In Glycolysis, which occurs in the cytoplasm, glucose is broken down in a series of enzymatic reaction to yield Pyruvate and releasing a net gain of 2 ATP molecules. In Kreb's cycle, which occurs in the mitochondrion, produces carbondioxide in a two-cycled reaction involving Pyruvate. 2 ATPs are also produced in this stage.
Lastly, in Oxidative phosphorylation also occuring in the mitochondrion, electrons are passed through electron acceptors to create a pump that generates the synthesis of 32 ATP molecules. In general, the three stages yield a total of 36ATP molecules from one molecule of GLUCOSE.
The rest of the energy from the oxidation of glucose is lost as heat energy, which is responsible for the warming effect we feel.
what is a carbon foorprint
Answer:
Definition: The amount of carbon dioxide and other carbon compounds emitted due to the consumption of fossil fuels by a particular person, group, etc.
The pathogenesis of tuberculosis includes the entrance of mycobacteria into the lungs and the resulting of which of the following? (Select all that apply.) Calcification Ghon tubercles Formation of granulomas Activation of macrophages Antigen-antibody complexes
Answer:
The macrophages have a in the calcification process, which generates the inflammatory processes. The Ghon tubercles is a lung lesion caused in tuberculosis that consists of a focus of calcification in conjunction with a lymph node infection. A granuloma is a mass of immune cells that forms when the immune system tries to isolate foreign substances.Macrophages can be activated by a variety of stimuli during the immune response. The antigen-antibody (Ag-Ac) reaction is one of the molecular reactions in the body's immune response.Explanation:
Tuberculosis is a disease caused by Mycobacterium tuberculosis, a bacterium that almost always affects the lungs. When the active form of the disease is present, symptoms (cough, fever, night sweats, weight loss, etc.) can be mild for many months. If not treated properly, Tuberculosis can be fatal.
Macrophages are a type of white blood cell found in the blood and they are the first body's defense against foreign substances. So they are effector cells of the immune system, the main players in the innate immune response.
When M. Tuberculosis infects a person, it attacks this first-response immune cells in the lungs, the macrophages. When they recognize these pathogens, macrophages produce the cytokines IL-1 and TNF-α, which cause the inflammation itself by acting on the endothelial cells of the nearby blood vessels to allow the transendothelial migration of the leukocytes. The inflammation t is a non-specific response to environmental aggressions, and its purpose is the isolation and destruction of the damaging agent, as well as repairing the damaged tissue or organ.
The macrophages have a in the calcification process, which generates the inflammatory processes. The Ghon tubercles is a lung lesion caused in tuberculosis that consists of a focus of calcification in conjunction with a lymph node infection. These lesions are especially common in children and may retain viable bacteria, so they are sources of disease transmission and may also be associated with classic tuberculosis reactivation after several years of inactivity.A granuloma is a roughly spherical mass of immune cells that forms when the immune system tries to isolate foreign substances that it has been unable to eliminate. Therefore it is a special type of inflammation that can occur in a wide variety of diseases. Infections that are characterized by granulomas include tuberculosis, but also include for example leprosy, histoplasmosis, cryptococcosis, coccidioidomycosis, blastomycosis, and cat scratch disease.Macrophages are usually in a resting state, they can be activated by a variety of stimuli during the immune response. Antigen phagocytosis serves as an initial stimulus; however, macrophages and their activity can be increased by cytokines secreted by, or through contact with, helper T-lymphocytes. One of the most powerful macrophage activators is gamma interferon. They are also able to recognize molecular patterns associated with pathogens. M. tuberculosis is a pathogen that contains Pathogen-associated molecular patterns (PAMPS), which are small sequences of molecules that repeat in groups of pathogens. They are recognised by Pattern-recognition receptors (PRRs), which include the Toll-like receptor (TLRs) family or the NOD-like receptors (NLRs). Once the receptors found in the macrophages recognize these PAMPS, the macrophages are activated are ready to perform an immune response.The antigen-antibody (Ag-Ac) reaction is one of the molecular reactions in the body's immune response. The concept refers to the specific binding of an antibody to an antigen to inhibit or delay its toxicity. When the macrophage recognizes a pathogen, it phagocytes it and degrades it, and presents its peptides to a T cell. This can activate a cytotoxic response, causing apoptosis of infected cells. Or, the T cell may activate a B cell to produce antibodies. Antibodies are proteins whose function is to detect any foreign elements that may enter the body. They normally detect specific parts of these elements, for example, proteins from the surface of bacteria or viruses. When antibodies bind to these foreign proteins, they act as a marker, making it easier for them to be recognised and eliminated by the cells of the immune system.-5. Passive immunity involves introduction of weakened or dead pathogens
in to the body which stimulates the body to produce its own antibodies
True or false?
Explanation:
answer is T....only 4 certain ailments, like your bro., had chickenpox, then you got sick..or u get your shots when u are a baby...
The quarrel between the Capulets and Mantagues has been going on for a long time when the play opens.
OTrue
O False
Answer: True
Explanation:
Fossil fuel and nuclear plants both heat water in order to turn _____?
O A. turbines
O B. solar panels
DO O C
O C. reserves
D. windmills
Answer:
i thinkits no a .to turn turbines.
Question 8 of 10
In what way does the nervous system connect to the skeletomuscular
system?
A. The nervous system provides oxygen to the muscles.
B. The nervous system holds the myosin and actin together.
C. The nervous system provides the calcium ions for contraction.
D. The nervous system sends signals to make muscles move.
SUBMIT
Answer: C. The nervous system sends signals to make muscles move
Explanation:make sure to like and rate.
A football hits the ground and an apple hangs from a tree.
Which statement is correct?
Both football and apple have kinetic energy.
Both football and apple have potential energy.
The football has potential energy and the apple has kinetic energy.
The football has kinetic energy and the apple has potential energy.
Answer:
The football has kinetic energy and the apple has potential energy.
Explanation:
Potential energy is the energy of an object at rest. Because the apple is hanging from a tree, it is not moving. Therefore, it has potential energy.
Kinetic energy is the energy of an object in motion. Because the football is moving from being in the air to hitting the ground, it has kinetic energy. When it hits the ground, the kinetic energy gets transferred into the ground.
Hope this helps.
Answer:
the football has kinetic energy and the apple has potential energy
Explanation:
3. The normal breaths per minute for a person is called _________________ of that person.
Answer:
Respiratory rate of that person.
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Which process produces two copies of the original DNA molecule?
O A. DNA ligation
B. DNA transcription
C. DNA translation
O D. DNA replication
SUBMIT
Answer:
The answer is option D.
DNA replicationHope this helps you
Has the Clements successional theory been subjected to peer review and publication?
Answer:
Yes the Clements successional theory has been subjected to peer review and publication
Yes, the Clements successional theory been subjected to peer review and publication.
What is Clements successional theory?Plant succession was characterised by Clements as a developmental process that, during the course of a community, it went through a well-defined series of stages that, in the end, resulted in a mature community, also known as the climax community. The climatic conditions that determined the climax community's existence manifested themselves in the form of an indicator and an expression of that community.
His hypothesis of community formation, sometimes known as plant succession, is what brought Clements the most fame. Even after World War II, Clements' organicism and physiological perspective were still around, albeit in a watered-down version, despite the fact that it was extensively discredited by later ecologists.
Learn more about Clements successional theory, here:
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helloo guysss pleaseeee help with this one
Answer
Uses of yeast
Fermentation BiomassGlycerol Alcoholic beverageYeast is found on the outer surface of sugary substances like fruits and grains.
Hope it helps :)
Answer:
i'm not in my biology class yet
Explanation:
i trust this thou Uses of yeast
Fermentation
Biomass
Glycerol
Alcoholic beverage
Yeast is found on the outer surface of sugary substances like fruits and grains.
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Foot-and-mouth disease virus (FMDV) causes severe disease in pigs, cattle, sheep and goats. High levels of FMDV infection can threaten the livestock industry. Which of the following statements best describes how FMDV reproduces in its livestock host? A. It uses the animal’s cellular machinery to reproduce inside the animal. B. It kills the animal and feeds on its carcass. C.It releases spores into the animal’s digestive tract. D. It produces eggs that are shed on the ground with the animal’s wastes. brainliest to the correct answer
Answer:
A. It uses the animal’s cellular machinery to reproduce inside the animal.
Explanation:
I would go with A because since it is a virus it cannot live outside the body and thus needs to rely on host's cell for metabolism as viruses are not capable of having their own metabolism.
Answer:
A. It uses the animal’s cellular machinery to reproduce inside the animal.
Explanation:
khan
Match each term about wind erosion and deposition with its description.
abrasion
a deposit of fine, mineral-rich soil that is
good for agriculture
deflation
sand deposited against an obstruction
sand dune
the process by which wind moves particles
that are loose
the process by which wind wears down
solid objects
loess
loess - a deposit of fine, mineral-rich soil that is good for agriculture
deflation - the process by which wind moves particles that are loose
sand dune - sand deposited against an obstruction
abrasion - the process by which wind wears down solid objects
Plz mark brainliest :)
Answer:
abrasion- the process by which wind wears down solid objects.
sand dune- sand deposited against an obstruction.
deflation- the process by which wind moves particles that are loose.
loess- a deposit of fine, mineral-rich soil that is good for agriculture.
Explanation:
edge 2020
0cm3 of acid were mixed with 60cm3 of alkali in an insulated container. The average temperature of the two solutions before they were mixed was 19.5°C. The temperature after mixing was 27.5°C. Was this an exothermic or an endothermic reaction?
Answer: Endothermic reaction.
Explanation: An endothermic reaction is any chemical reaction that absorbs heat from its environment. In this reaction, the temperature of the mixture raised from 19.5°C to 27.5°C, which means there was an increase of heat, ergo, it is an endothermic reaction.
why the process of photosynthesis is important to life on Earth?
Answer:
Photosynthesis captures light energy from the Sun and stores it in the bonds of glucose, which is then used during cellular respiration to drive the formation of ATP in all plants and animals.
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