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Total Questions : 93 | Page
9
of 10 pages
Question 81.
Which messenger molecules are derived from arachidonic acid?
eicosanoids
terpenoids
corticoids
steroids
See Solution
Discuss Question
Answer: Option A. ->
eicosanoids
Answer:
(a).
eicosanoids
Question 82.
The process by which extracellular messages translate into intracellular changes is termed _________________
cell signaling
cell adhesion
signal transduction
cell transformation
See Solution
Discuss Question
Answer: Option C. ->
signal transduction
Answer:
(c).
signal transduction
Question 83.
Steroids are derived from ________________
estrogen
cholesterol
proteins
carbohydrates
See Solution
Discuss Question
Answer: Option B. ->
cholesterol
Answer:
(b).
cholesterol
Question 84.
G-protein coupled receptors are referred to as seven-transmembrane receptors.
True
False
May be True or False
Can't say
See Solution
Discuss Question
Answer: Option A. ->
True
Answer:
(a).
True
Question 85.
The G-protein coupled receptors have their _____________________ outside the cell.
amino terminus
carboxyl terminus
alpha helices
beta helices
See Solution
Discuss Question
Answer: Option A. ->
amino terminus
Answer:
(a).
amino terminus
Question 86.
On the cytoplasmic site of GCPRs, the G-proteins bind to ___________________
amino-terminus
promoter region
second loop
third loop
See Solution
Discuss Question
Answer: Option D. ->
third loop
Answer:
(d).
third loop
Question 87.
The inactive conformation of a G-protein coupled receptor is stabilized by ____________________
covalent interactions
hydrogen binding
non-covalent interactions
ionic interactions
See Solution
Discuss Question
Answer: Option C. ->
non-covalent interactions
Answer:
(c).
non-covalent interactions
Question 88.
Which of the following is a stimulus for rhodopsin?
light
acidic pH
basic pH
neurotoxins
See Solution
Discuss Question
Answer: Option A. ->
light
Answer:
(a).
light
Question 89.
How many types of protein-tyrosine kinases are there?
1
2
3
4
See Solution
Discuss Question
Answer: Option B. ->
2
Answer:
(b).
2
Question 90.
Bringing 2 kinase domains in close contact allows for ___________________
trans-autophosphorylation
cis-autophosphorylation
inactivation of one domain
inactivation of both domains
See Solution
Discuss Question
Answer: Option A. ->
trans-autophosphorylation
Answer:
(a).
trans-autophosphorylation
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