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Ivahew [28]
3 years ago
6

Caffeine is an inhibitor of phosphodiesterase. Therefore, the cells of a person who has recently consumed coffee would have incr

eased levels of _____.
A) phosphorylated proteinsB) cAMPC) adenylyl cyclaseD) activated G proteins
Biology
1 answer:
qaws [65]3 years ago
3 0

Answer:

B) cAMP

Explanation:

Phosphodiesterase is an enzyme that breaks a phosphodiester bond, for example in molecules such as cAMP and cGMP. So, phosphodiestarases are  are regulators of signal transduction: regulate the duration of signaling pathway.

Caffeine is  central-nervous-system stimulant and the mechanisms of its action usually are: mobilization of intracellular calcium or inhibition of specific phosphodiesterases.

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Eukaryotic sexual life cycles show tremendous variation. Of the following elements, which do ALL sexual life cycles have in comm
larisa [96]

Answer:

II. meiosis

III. fertilization

IV. gametes

Explanation:

Gamete formation and fertilization are the processes performed by all the sexually reproducing organisms. Gametes are the cells that are formed in the male and female sexual organs of these organisms. Formation of gametes occurs by meiosis and therefore, the gametes of a diploid organism are always haploid.

Male and female gametes fuse during the process of fertilization and form the zygote which in turn divide repeatedly to produce an embryo. For instance, sperms and eggs are the male and female gametes that are formed in testes and ovaries of male and female human individuals respectively. The fusion of sperm and egg produces a zygote that finally develops into a young one.  

8 0
3 years ago
Anolis lizards in the tropical rainforest all eat the same insects. over time different lizard species have adapted to live in d
pochemuha

Resource partitioning

Resource partitioning refers to differences in resource use between species regardless of the origin of the differences. Similar species can coexist in the same ecological community without one pushing the others to extinction through competition. Species compete for the same resources which include nutrients and habitats which are the raw materials needed by organisms to grow, live, and reproduce. For the question given above, the divergence in lizards is an example of resource partitioning.






5 0
3 years ago
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How would asthma effect the respiration?
Mumz [18]
Asthma is due to spasms in the bronchi of the lungs making the task of breathing require more effort.
8 0
3 years ago
Two species of meadowlarks have different mating calls that lead to reproductive isolation. What type of isolation does this exa
77julia77 [94]
Hi there!

The example of the meadowlarks is an example of behavioral isolation. This is because the mating call is a behavior the birds exhibit. This helps the birds to find their correct mate because though the birds look similar, they are not able to produce offspring.

Hope this helps!! :)
If there's anything else that I can help you with, please let me know!
6 0
3 years ago
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Can anyone explain in detail the process of mitosis? (Including PMAT)
Anna35 [415]

Answer:

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Explanation:

Make sure to edit so your not copy-writed.

6 0
3 years ago
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