BIO 314 Exam 3 Test Questions and
All Correct/Verified Answers 2026.
All of the following about receptor tyrosine kinases is true EXCEPT
A.
their activated form is usually a dimer
B.
they bind an extracellular ligand
C.
they transphosphorylate their partner
D.
they phosphorylate the amino acid Tyr
E.
when activated they will bind a trimeric G protein - Answer E
The two membrane-bound enzymes that are the main targets for activated G proteins are
A.
protein kinase A and odorant receptor kinase
B.
chymotrypsin and trypsin
C.
adenylyl cyclase and phospholipase C
D.
ribonuclease and protein kinase C
E.
MAP kinase (MAP-K) and MAP-kinase-kinase (MAP-KK) - Answer C
The drug taxol can inhibit cell division of ovarian cancer cells because of its ability to:
A.
, Lead to microtubule catastrophe
B.
Block microtubule polymerization
C.
Stabilize microtubules
D.
Behave as a GTPase activating protein (GAP)
E.
Inhibit Ras - Answer C
Muscle contraction is triggered by sudden rise in:
A.
Ca2+
B.
K+
C.
GTP
D.
H+
E.
Acids - Answer A
Cellular crawling is facilitated by
A.
microtubules
B.
actin-myosin complexes
C.
keratin protrusions
D.
cortical actin - Answer D
All Correct/Verified Answers 2026.
All of the following about receptor tyrosine kinases is true EXCEPT
A.
their activated form is usually a dimer
B.
they bind an extracellular ligand
C.
they transphosphorylate their partner
D.
they phosphorylate the amino acid Tyr
E.
when activated they will bind a trimeric G protein - Answer E
The two membrane-bound enzymes that are the main targets for activated G proteins are
A.
protein kinase A and odorant receptor kinase
B.
chymotrypsin and trypsin
C.
adenylyl cyclase and phospholipase C
D.
ribonuclease and protein kinase C
E.
MAP kinase (MAP-K) and MAP-kinase-kinase (MAP-KK) - Answer C
The drug taxol can inhibit cell division of ovarian cancer cells because of its ability to:
A.
, Lead to microtubule catastrophe
B.
Block microtubule polymerization
C.
Stabilize microtubules
D.
Behave as a GTPase activating protein (GAP)
E.
Inhibit Ras - Answer C
Muscle contraction is triggered by sudden rise in:
A.
Ca2+
B.
K+
C.
GTP
D.
H+
E.
Acids - Answer A
Cellular crawling is facilitated by
A.
microtubules
B.
actin-myosin complexes
C.
keratin protrusions
D.
cortical actin - Answer D
