1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
lozanna [386]
3 years ago
11

Caffeine prolongs and intensifies the effects of epinephrine. Which of the following potential mechanisms of action of caffeine

is consistent with this effect?
a. inhibits cAMP phosphodiesterase, the enzyme that converts cAMP to AMP.
b. a competitive antagonist of cAMP binding to PKA.
c. stimulates phospholipase Cb.
d. inhibits sarcoplasmic/endoplasmic reticulum Ca 2 + - ATPase.
e. activates PKC.
Biology
1 answer:
kherson [118]3 years ago
4 0

Answer:

a. inhibits cAMP phosphodiesterase, the enzyme that converts cAMP to AMP.

Explanation:

The phosphodiesterases are a group of enzymes that are capable of breaking phosphodiester bonds such as those between nucleotides in nucleic acids. The Cyclic adenosine monophosphate (cAMP) is a second messenger involved in intracellular signaling pathways. This molecule (cAMP) is hydrolyzed by the cAMP-dependent phosphodiesterase, which catalyzes the enzymatic breakdown of phosphodiester bonds (i.e., hydrolyzing cAMP to 5-AMP). The cAMP levels are modulated by the balance between its generation and the degradation via cyclic nucleotide phosphodiesterase.

You might be interested in
Describe the results of a protozoan culture
soldi70 [24.7K]
I am not sure how to answer
7 0
2 years ago
The most important reason why muscles tire more quickly during high-intensity workouts than they do during low-intensity workout
algol [13]
I dont know any of this please help me this iis super hard
8 0
3 years ago
Since we now have the technology to use genetic fingerprinting to catch criminals, should we make every US resident provide a bl
rosijanka [135]

Answer:

It can be easily exploited by criminals, and it puts our undercover police officers and FBI officers in danger. Also, police officers are already swamped with work and criminal activity as is. It would also be ridiculously hard to get everybody already registered as a resident it the U.S. Take into account the different family types, and how hard it is for single mothers with children.

On the other hand, adding this, despite the obvious hardships, will make catching criminals much easier. Our blood DNA is unique to every human being. It would be extremely helpful to have a system like this in place. This would, at first, be hard to establish, but once it settles in, police officers would be able to spend much more time at home with their families instead of filling out paperwork for overtime.

Explanation:

6 0
3 years ago
A urease test is used to identifyMyobacterium tuberculosis because
Tcecarenko [31]

b) some bacteria reduce nitrate ion


6 0
2 years ago
Which is a symptom that is typical in people who have cancer? resistance to insulin sores that do not heal onset of a gluten all
Ainat [17]

It was sores that don't heal got the question wrong because of the other answer posted here smh

3 0
3 years ago
Read 2 more answers
Other questions:
  • Describe the word homeostasis, and why would homeostasis not be maintained if the cell membrane was damaged?
    11·1 answer
  • What organic molecules must be included in the soil for earthworm nutrition?
    12·2 answers
  • Cross type AB man with tybe O women. what are the genotypes and phenotypes of the possible offspring
    14·1 answer
  • Fermentation reactions:
    11·1 answer
  • Do you get all the energy from a piece of fruit you eat?
    8·2 answers
  • What plant structure primarily allows a plant to preform photosynthesis
    5·1 answer
  • What is one benefit of using tides for energy?
    9·2 answers
  • Biological evidence of the age of the earth includes _____.
    6·2 answers
  • If a cell that has six chromosomes goes through mitosis, how many chromosomes will the daughter cells have?
    9·1 answer
  • What precautions can you take at school to reduce the incidence of infection​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!