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KonstantinChe [14]
2 years ago
15

What factors help blood move through veins?

Biology
1 answer:
horsena [70]2 years ago
6 0

The pumping force of the ventricles moves blood through the arteries. The breathing movements exerts pressure on the chest veins, the valves in the larger veins keep the blood from flowing backwards, and the skeletal muscles' contraction all help the blood in veins to move.

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According to endosymbiotic theory, mitochondria and chloroplasts contain a limited amount of genetic material and divide by_____
erica [24]

Answer:

Splitting.

Explanation:

The endosymbiont theory explains the evolution of the organelles of eukaryotes by the ingestion of the materials of prokaryotes. Various evidence are available for the endosymbiont theory origin.

The mitochondria and chloroplast contains the similar RNA sequence and their genetic material is limited. The chloroplast and mitochondria divides by the process of splitting.

Thus, the answer is splitting.

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3 years ago
Which term refers to a universal fact sometimes based on mathematical equations?
seraphim [82]
Scientific law. For example, Law of Universal Gravitation.
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Which of the following is true ?
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tatuchka [14]

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7 0
3 years ago
Silkworms
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