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Alexus [3.1K]
4 years ago
14

Beta-adrenergic receptor signaling must be terminated quickly or an extended metabolic shift could cause serious problems for th

e organism. Which best explains how receptors are "desensitized"?A. G proteins will lead to activation of proteases, which reduces the overall amount of receptor on the cell membrane.B. Arrestin will first bind the receptor, allowing G protein-coupled receptor kinase to recognize the GPCR and phosphorylate the receptor. This increases the GTPase activity of the G protein.C. G protein-coupled receptor kinases (GRKs) are protein kinases that phosphorylate receptors for internalization.D. G protein-coupled receptor kinases (GRKs) lead to the activation of other protein kinases, which block ligand binding to the receptor binding pocket.
Biology
1 answer:
Andreas93 [3]4 years ago
5 0

Answer:B

Explanation:

Agonist-induced desensitization involves phosphorylation of G protein-coupled receptors by two currently recognized classes of serine/threonine protein kinases. Second messenger-dependent kinases, phosphorylating a variety of proteins, mediate a generalized cellular hyporesponsiveness termed heterologous desensitization. G protein-coupled receptor kinases (GRKs) phosphorylate specifically agonist-occupied, or activated, receptors, and thereby initiate receptor-specific, or homologous, desensitization.

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What is the manipulated variable in this experiment?
jasenka [17]

The correct answer is C. The temperature of the water

Explanation:

In an experiment such as the one described about the speed of snails in water, the manipulated variable is the factor or element that is manipulated on purpose. This means the researcher or researchers slightly change this element to compare how this affects another variable. In this context, the manipulated variable is the temperature of the water because researchers used three different temperatures (cool, room-temperature, and warm), and therefore they manipulated or changed this factor. Moreover, it is expected temperature affects the distance nails move, which is the main variable.

7 0
3 years ago
Which of the following are ways that DNA can undergo mutation? A. During DNA replication, the wrong base is added to the strand
trasher [3.6K]

Answer: Option C.

High-energy waves like UV light or radiation physically damage the DNA

Explanation:

Mutation is the change or alteration that occur in the DNA sequence or nucleotides sequence of an organism which is caused by mistakes when the organism is copied or environmental factors such as UV light.

Ultraviolet light cause mutations by activating the SOS repair systemof which is a part of i a new DNA polymerase that has no power to edit e but has the ability to move past the thymine dimer and synthesize DNA, This lead to cells able to replicate but with a high frequency of mutations.

7 0
3 years ago
Which of Mendel's laws or principles states that gametes carry one allele for each trait?
Burka [1]
Law of segregation states that <span>gametes carry one allele for each trait
As it states that
</span>that during the production of gametes the two copies of each hereditary factor segregate<span> during the production of gametes</span>  so that offspring acquire one of the two allele  from each parent
so option C is correct
hope it helps
5 0
3 years ago
Read 2 more answers
How the data from the temperature experiment supports your hypothesis.
Kipish [7]
Wheres the picture for this
4 0
3 years ago
large proteins such as albumin remain in capillaries rather than diffusing out, resulting in the _____.
Bumek [7]

Answer:

development of an osmotic pressure difference across capillary walls

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