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stiv31 [10]
4 years ago
6

Caffeine leads to a vasoconstriction, raises the epinephrine levels, and increases nervous signaling. a metabolite of caffeine b

locks phosphodiesterase. what is the most likely impact of caffeine on cell signaling?
Biology
1 answer:
posledela4 years ago
7 0
Caffeine will block the action of phosphodiesterase and thus the enzyme will not be activated to break down cAMP.
Caffeine has some effects which are psychological in nature. At the cellular level, caffeine blocks the action of phosphodiesteerase. Phosphodiesterase is the one that break down the cAMP inside the cell.
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Watersheds generally contain fresh water.<br> True<br> False
artcher [175]

Answer:

True

Explanation:

6 0
2 years ago
Explain the basis for the great diversity of proteins in living organism.
sashaice [31]

Answer:

Explanation:

Protein functions are so diverse because of the many unique three-dimensional structures protein polymers form. Despite such variety, proteins also share several specific structural characteristics in their monomers, the amino acids. Structural similarities among amino acids make protein synthesis a uniform and regulated process; however, each amino acid contains a unique structural component as well. Specific differences between each amino acid interact to create unique three-dimensional protein structures. Combined, the similarities and differences between amino acids explain how cells can build a diverse pool of proteins from the same set of building blocks. Protein synthesis involves building a polymer of amino acids with complex three-dimensional structure. Dehydration synthesis forms a peptide bond between amino acids and releases a water molecule.

8 0
3 years ago
A segment of DNA that codes for the ability to make one type of protein molecule is known as a(n)
Alex_Xolod [135]

Answer:

Gene

Explanation:

It's known as a gene

4 0
4 years ago
Read 2 more answers
Which feature of enceladus and europa would indicate the possible presence of life?
daser333 [38]

Enceladus, one of Saturn's moons of only about 314 miles in diameter hides in its entrails an ocean of liquid water that is rich in organic molecules, making it one of the places where it is most likely to find some form of extraterrestrial life.

Europa is a strange shaped moon of Jupiter with a large number of intersecting lines. Models from the interior of Europe show that under a thin crust of 5 km (3 miles) of water ice, Europa can have oceans with 50 km (30 miles) of depth or more. The visible marks of Europa could be the result of a global expansion where the crust could have been fractured, filled with water and frozen.

3 0
4 years ago
A plant breeder has determined the following variances for yield of corn in his fields:
Law Incorporation [45]

Answer:

A. VG = 80

B. Broad sense heritability = 0.80

C. Narrow sense heritability = 0.30

D. Average yield = 430 Units

Explanation:

A. Given that

VA = 30

VD = 50

VI = assumed not available

Therefore

Total genetic variance (VG) = VA + VD

= 30 + 50

= 80

VG = 80

B. Given that

VP = 100

VG = 80

Broad sense heritability, H2 = VG/VP

= 80/100

= 0.80

C. Given that

VA = 30

VP = 100

Narrow sense heritability, h2 = VA/VP

=30/100

= 0.30

D. The difference in selection = 500 - 400

= 100

Recall,

Selection response is heritability multiplied by selection differential.

That is

R = h2S

Selection differential = 100

Heritability h2 = 0.30

Selection response = 0.30 × 100

= 30units

Therefore, expected average yield = 400 + 30

= 430 Units

6 0
3 years ago
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