1. In the IP 3 pathway, what is the function of IP 3 ? Activate protein kinase C
ID: 85472 • Letter: 1
Question
1. In the IP3 pathway, what is the function of IP3?
Activate protein kinase C.
Activate adenylyl cyclase.
Activate phospholipase C.
Phosphorylate a protein.
Bind calcium channels in the ER.
2. Mobile genetic elements, such as transposons and retrotransposons, are significant because:
they are present in the human genome, but not in the genomes of other organisms.
only corn contain transposons.
transposons are the only mechanisms of genetic diversity.
the entire human genome is composed of transposons.
mutations caused by retrotransposons contribute greatly to a species’ evolution.
3. Most intracellular receptors are what type of protein?
enzymes
transcription factors
neurotransmitters
steroids
DNA
4. Phospholipase C catalyzes the reaction in which:
DAG is converted to PIP2.
calcium ions are released from the ER.
a protein kinase is activated.
IP3 is converted to DAG.
PIP2 is split.
5. Phosphodiesterase catalyzes the conversion of:
cAMP to AMP.
a protein to a phosphorylated protein.
GDP to GTP.
calcium to calcium-calmodulin.
IP3 to PIP2.
a.Activate protein kinase C.
b.Activate adenylyl cyclase.
c.Activate phospholipase C.
d.Phosphorylate a protein.
e.Bind calcium channels in the ER.
Explanation / Answer
1)
Bind calcium channels in the ER.
2)
mutations caused by retrotransposons contribute greatly to a species’ evolution.
3)
steroids
4)
IP3 is converted to DAG
5)
cAMP to AMP.
e.Bind calcium channels in the ER.
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