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ollegr [7]
3 years ago
12

A person dies, and within hours, the skeletal muscles develop a locked contraction known as rigor mortis. calcium ions leak from

the sarcoplasmic reticulum into cytoplasm.what best explains this rigor?
Biology
1 answer:
S_A_V [24]3 years ago
8 0
During when we are alive, oxygen is used to make atp, and atp  is used to break cross-brdiges when we are relaxing / contracting our muscles. when a person is dead then there is no oxygen but the body can still produce atp via anaerobic glycolysis, when the glycogen is depleted then no atp is produce so the the cross bridges can no logner be broken that is why skeletal muscles lock
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Explanation:

5 0
3 years ago
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den301095 [7]

Answer:

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7 0
3 years ago
Identify which type of natural selection is described in each case below.
ICE Princess25 [194]

Answer:

Results in the evolution of the species: Directional selection

Results in new species: Disruptive selection

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Diversity decreases: Stabilizing selection

Diversity increases: Disruptive selection

Explanation:

Directional selection which is also known as positive selection is known to be a mode of natural selection. In this type of selection, an extreme phenotype is favored over other phenotypes. This makes the allele frequency to move in the direction of that phenotype and this takes place over time.

Disruptive selection (known to be diversifying selection) talks about the certain changes in the population genetics whereby extreme values of a particular trait are favored over intermediate values. This results in new species.

While Stabilizing selection is a natural selection whereby there is a stabilization of the population mean on the particular value of a non-extreme trait. Here the diversity is decreases.

3 0
3 years ago
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Dmitry [639]

Answer:

Accuracy

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In mathematics, deviation best describes variation from the actual value to the observed value.

I would assume you're looking for the first answer.

8 0
3 years ago
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n200080 [17]
Its A
The electron cloud model consisted of a dense nucleus surrounded by a cloud of electrons like a fan. Hope this helps.<span>
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6 0
3 years ago
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