Question 7 Complete the following sentence: \"A competitive inhibitor competes w

Question

Question 7
Complete the following sentence: "A competitive inhibitor competes with substrate binding to the _________ site, generally by also binding to this site; its effect on reaction rate becomes neglectable when the concentration of _________ is sufficiently high compared to the concentration of __________."

Select one:
a. active, inhibitor, substrate
b. active, substrate, product
c. active, substrate, inhibitor
d. allosteric, inhibitor, substrate
e. allosteric, substrate, inhibitor

Question 8
Complete the following sentence: "Cyclin levels _________ during cell cycle whereas cyclin-dependent kinase (CDK) levels _________. Progression through cell cycle results from the formation of _________ complexes, within which _________ is activated through phosphorylation."

Select one:
a. remain constant, vary, cyclin-CDK, CDK
b. remain constant, vary, CDK-CDK, CDK
c. vary, remain constant, cyclin-CDK, CDK
d. vary, remain constant, cyclin-cyclin, cyclin
e. vary, remain constant, cyclin-CDK, cyclin

Question 9
GPCRs are often referred to as seven-pass transmembrane receptors because they have:

Select one:
a. seven pores that signal molecules can use to pass through the bilayer.
b. seven receptors on each side of the lipid bilayer that receive and transmit signals.
c. seven different G proteins with which they interact to amplify signals.
d. a polypeptide chain that crosses the lipid bilayer seven times.

Explanation / Answer

7: b. active, substrate, product

8: c. vary, remain constant, cyclin-CDK, CDK

9: d. a polypeptide chain that crosses the lipid bilayer seven times.

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