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Otrada [13]
3 years ago
9

What signal transduction mechanism is most commonly utilized by the receptor for glucagon?

Biology
1 answer:
Mice21 [21]3 years ago
8 0

Plasma membrane receptors have a hormone recognition domain one or more  

Trans membrane domains, and an intracellular domain that generates the intracellular signals.

Cyclic AMP is generated by adenylate  cyclase and stimulates phosphorylation throughout the cell by allosteric activation  of protein kinase A.

Inactivation of the active epinephrine hormone-receptor complex by phosphorylation desensitizes the receptor.


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A group of cells is assayed for DNA content immediately following mitosis and is found to have an average of 4 picograms of DNA
damaskus [11]

Answer:

b: 8;8

Explanation:

Mitotic or meiotic cell division constitute the m phase of the cell cycle. At the end of the m phase, the new cells enter the interphase stage of the cell cycle. The interphase is further sub-divided into;

  • <em>the G_0 phase,</em>
  • <em>the G_1 phase,</em>
  • <em>the S phase; and</em>
  • <em>the G_2 phase</em>.

The G_0 phase is essentially a resting phase. Cells that do not need to divide except when necessary move into this phase after exiting the m phase.

Actively dividing cells enter the G_1 phase after exiting the m phase. Cell development and growth takes place. From there, the cells enter the S phase where DNA replication/synthesis takes place. The cells then enter the G_2 phase where proteins are synthesized in preparation for division or m phase.

At the S phase, the amount of DNA a cell carries is doubled but the chromosome number remains the same. For example, if a cell enters the S phase with 2 g of DNA containing 10 chromosomes, at the end of S phase, the amount of DNA would have come 4 g while the number of chromosomes will remain 10.

Hence, if the average amount of DNA in the assayed cells immediately after mitosis is 4 picograms, the amount would be 8 picograms at the end of S phase and will still remains 8 picograms at the end of G_2 phase.

The correct option is b.

8 0
3 years ago
I didn’t mean to put D but what is the answer?!
Goshia [24]

Answer:

Actually, D is the correct answer

3 0
2 years ago
How are sugar molecules in living things classified?
Vinil7 [7]
The answer is Carbohydrates
6 0
2 years ago
Read 2 more answers
When removing the spleen, a surgeon must be careful not to cut one of its branches, the:?
Andrej [43]
You should not, EVER, cut the renal artery. Doing so not only means that blood is no longer going to that kidney, but just as well, blood can't be filtered.
6 0
3 years ago
An enormous rifting occurred, causing massive floods of basaltic lavas and the release of large amounts of gas. This is thought
podryga [215]

Answer:

2) End Triassic

Explanation:

End Triassic extinction occurred 201 million years ago. It was caused by the rifting of super continent Pangea. Pangea started to break and drift apart. When North america started to separate from Africa, volcanic activity increased. Lava and a large amount of gas was released into the atmosphere specially carbon dioxide. This led to global warming like condition which ultimately caused extinction of a large number of species.

4 0
3 years ago
Read 2 more answers
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