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Biochemistry - Cell Signalling and Transduction

Exercise : Cell Signalling and Transduction - Section 1
  • Cell Signalling and Transduction - Section 1
16.
What is the name of the protein signaling molecule that alters glucose uptake, and where would its receptors be located?
Insulin; many different cell types that use glucose for fuel
Insulin; beta cells of the pancreas
PDGF; the blood
NGF; the nerves involved in simple reflexes
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
In the signal transduction mechanism known as protein phosphorylation
the signaling molecule binds to a surface receptor
receptor kinases play a key role in triggering the signal cascade
phosphorylated proteins act with enzymes to trigger the signal cascade
All of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
Cell signaling can be classified into
three distinct types based on the distance over which the signaling molecules act
two distinct types based on the distance over which the signaling molecules act
three distinct types based on the signaling molecules
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
Which of the following statement is correct?
Cell communicate with one another in multicellular organisms using extracellular signaling molecules or hormones
Cell communicate with one another in unicellular organisms using extracellular signaling antigen and antibody
Cell communicate with one another in multicellular organisms using intracellular signaling molecules only
Cell communicate with one another in unicellular organisms using intracellular signaling antigen and antibody
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
In vasodilation, proper nerve signals sent to blood vessels cause
the release of nitric oxide from endothelial cells
relaxation of smooth muscle cells
reduced blood pressure
All of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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