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Svetllana [295]
2 years ago
11

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 proteins
B) cAMP
C) adenylyl cyclase
D) activated G proteins
Biology
1 answer:
adell [148]2 years ago
7 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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The portion of the dna molecule that is translated is composed of
katrin2010 [14]
Hello there ^ _ ^


The portion of the DNA molecule that is translated is composed of anticodens.

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2 years ago
Drinking alcohol can cause dehydration, which makes the blood hypertonic. Which option best describes the consequences of this h
julsineya [31]

Answer:

Hypertonic blood draws water out of the interstitial fluid, which makes the interstitial fluid hypertonic. This, in turn, draws water out of the cells.

Basically an hype tonic blood has high solute potential,( low water potential)  compare with  the surrounding  plasma  and the interstitial fluid. Thus the interstitial fluid is hypotonic to the blood.

Consequently,water with higher potential moves   from the interstitial fluid medium into the blood by osmosis through the capillary endothelial. This raises the water potential of the blood, lowering the solute potential, thus making it hypotonic to the interstitial fluid; which is now hypertonic(lower water potential ,due to loss to the blood by osmosis).

Since the interstitial fluids is now hyper tonic to the surrounding cells, water moves from the hypo tonic surrounding cells through osmosis into the interstitial fluids. The sequence continues until a stable internal environment is achieved,

8 0
2 years ago
You have made random-sequence synthetic RNA molecules that contains only A and G, and which contain 5 times as much A as G. You
Blababa [14]

Answer:

According to the genetic code, the amino acids are the following:  

- Glycine: encoded by GGC, GGA and GGG codons  

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-Glutamic acid: encoded by GAA and GAG  codons

Explanation:

The probabilities to observe an amino-acid formed by Glutamic acid in the coding sequence is 2/9 for each codon

7 0
2 years ago
Nerve fibers from the olfactory bulb project directly to ________. nerve fibers from the olfactory bulb project directly to ____
ohaa [14]

The olfactory cortex (nucus) of the temporal lobe is where the nerve fibers of the olfactory bulb projects directly. This cortex is where you get the smell sensation before determining what the smell actually is. The olfactory cortex is located on the medial aspect of the temporal lobe, particularly in the uncus or the piriform lobe. It is also called the Rhinoencephalon or the nose brain.

6 0
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xz_007 [3.2K]

Answer:

100 units

Explanation:

The interphase of the cell cycle includes three stages: G1, S, and G2. During the S phase of interphase, the cell enters the process of DNA replication. DNA replication duplicates the existing DNA molecule and doubles the DNA content of the cell. The cell accommodates the newly formed DNA in two sister chromatids of chromosomes. If a cell of grasshopper contained 200 units of DNA in the G2 phase, the cell would have 100 units of DNA in the G1 phase. The S phase would have doubled the DNA content and the G2 phase had 200 units.  

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