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Why is the kinase so important in a receptor tyrosinekinase?

Tyrosine kinases activate synapses, triggering cellularresponses.

Tyrosine kinase is the signal that the receptor binds.

Kinases transfer phosphates, phosphorylating the receptor.

The tyrosine kinase domains are active in their monomericstates.

The tyrosine kinase uses guanosine triphosphate to becomeactivated.

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Jamar Ferry
Jamar FerryLv2
28 Sep 2019
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Related questions

1. Specific extracellular signal molecules require a cell surface receptor. What about the chemistry of these signals prevents them from diffusing across the cell membrane?
2. What is the difference between endocrine signaling, paracrine signaling and autocrine signaling?
3. Why do cellular signal molecules bing to a receptor using noncovalent forces rather than a covalent bond?
4. What is the different between kinases and phosphates? How do they impact activity of the target protein. Please give an example that involves kinases and phosphates.
5. How do kinases recognize their substrates and the proteins they act on?
6. What is the difference between the active form and inactive form of GTPase superfamily of proteins?
7. How are second messengers different from first messengers?

QUESTION 16

What is the function of tRNA molecules?

The A-P-E sites of the ribosome are made out of tRNA molecules

tRNAs transfer the ribosome onto the 5' cap of an mRNA molecule

tRNAs catalyze the formation of new peptide bonds

tRNAs form covalent bonds between the ribosome and the mRNA

tRNAs bring amino acids to specific codons

QUESTION 17

What's the difference between primary and secondary active transport?

Only primary active transport requires energy

Only in primary active transport does a solute move against its concentration gradient

Primary active transport can only move a single ion, while secondary transport moves two ions simultaneously

Primary transport is used for larger solutes, while secondary transport is used for smaller molecules

Primary transport uses ATP-powered pumps, while secondary transport uses energy indirectly

QUESTION 18

When do beta cells release insulin into your bloodstream?

When you are very hungry

When blood sugar levels are high

When high levels of glycogen initiate the relase of insulin-containing vesicles

When a G-coupled receptor on the beta cells binds to insulin

When adrenaline binds to a beta cell receptor tyrosine kinase

THIS IS WORTH A LOT OF QUESTIONS becasue of the amount ofquestions and it is very important to me. I have answered themajority of the questions already and know which ones are for surecorrect so I will know. Please write beside a question you dontknow that you are unsure but think its A, B, C, or D. Thank youvery much.


ALSO, FOR QUESTION 14 THE PICTURE IS ATTACHED


1. Which of the following types of bonds wouldbe LEAST likely in a receptor-ligand interaction?

  1. Ionic bond

  2. Covalent bond

  3. Hydrogen bond

  4. Hydrophobic interaction

  5. Ionic bond

2. Ka, the association constant, is a measureof which of the following?

  1. The concentration of unbound ligand

  2. The concentration of unboundreceptor

  3. The affinity of receptor for ligand

  4. The size of the receptor relative to theligand

  5. The number of ligands for eachreceptor

3. Receptors that are multivalent tend to bindto their ligands more strongly than receptors with a single bindingsite. What is the term used to describe this phenomenon?

  1. Avidity

  2. Valency

  3. Affinity

  4. Magnetism

  5. None of the above

4. Which of the following BEST describes howcytokines are released from activated T cells?

  1. Cytokines are released near where T-cellreceptors are clustered.

  2. T cells release cytokines on the side of thecell opposite the MTOC in order to more efficiently

    distribute the response around thecell.

  3. T cells release cytokines evenly around thecell.

  4. Cytokines are released in short bursts frompre-formed vesicles full of cytokines.

  5. Cytokines are released in whatever directionthe MTOC happens to be facing upon TCR ligation.

5. Receptors that dimerize upon ligand bindingoften contain______________in their cytoplasmic domains.

  1. tyrosine kinases

  2. hydrophobic regions

  3. proteases

  4. metal-binding regions

  5. large immunoglobulin folds

6. Portions of the cytoplasmic domains of manyimmune receptors are targets for phosphorylation. These domains areknown as:

  1. Grb domains.

  2. ITAMs.

  3. leucine zipper motifs.

  4. SOS domains.

  5. None of the above

7. Lipid rafts are highly ordered regions ofthe cell membrane that are enriched in:

  1. unsaturated fats.

  2. cholesterol.

  3. metabolic proteins.

  4. clathrin.

  5. tubulin.

8. Which of the following are well establishedways that tyrosine phosphorylation directly affects signalingpathways?

  1. Inducing kinase activity

  2. Recruiting enzymes through SH2domains

  3. Opening calcium channels

  4. Both a and b

  5. Both b and c

9. Which of the following is the CORRECTrelationship?

  1. PIP2= PIP3

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