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vredina [299]
3 years ago
13

Which mineral is responsible for making mussels contract or relax?

Health
1 answer:
Murrr4er [49]3 years ago
3 0
<span>Which mineral is responsible for making mussels contract or relax?

</span>
<span>

</span><span>Sodium and potassium play an essential role in muscle contraction
Calcium and magnesium work together to control muscle contraction.
Calcium is responsible for the contraction of the muscles (systole) and the magnesium for their relaxation (diastole).</span>

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3 years ago
In a sample of double-stranded DNA, 19% of the nitrogen bases are guanine(G). What percent of the nitrogenous bases are guaninin
Viefleur [7K]

In a sample of double-stranded DNA, if the nitrogenous base guanine is 19%, then the nitrogenous base adenine will be 31%

Explanation:

In a double-stranded DNA, the four nitrogenous bases bind and pair together. The purine bases guanine (G) and adenine (A) pair with pyramidine bases cytosine (C) and thymine (T) respectively. The pairing will be between G-C and A-T bases.

According to Chargaff’s Rule, the percentage of each nitrogenous base will be equal in a pair. So the percentage of G will be equal to percentage of C and the percentage of A will be equal to percentage of T.  

So if the guanine percentage is 19%, then applying Chargaff’s rule, cytosine will also be 19%

The remaining 68% will be shared with the adenine and thymine pair, of which adenine will be of 31% according to Chargaff’s rule.

4 0
3 years ago
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Lelu [443]
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3 years ago
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I'm 95.99999% sure that the answer is D
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Answer:

A wish is something you want to happen and a goal is something you will work to make happen

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