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olya-2409 [2.1K]
3 years ago
10

What causes the aortic semilunar valve to close?

Biology
1 answer:
schepotkina [342]3 years ago
8 0
When the atrioventricular valves open. 

This is when Ventricles are being filled with blood from the atrium.
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A research biologist is studying cells from a new organism recently discovered in the Brazilian rain forest. She determines that
scoray [572]

Answer:

(2⁵)²: 1024 combinations

Explanation:

In this case, the chromosome haploid number (n) of the target species is equal to 10, and therefore its diploid number (2n) is equal to 5 (i.e., somatic cells in the target species contain 5 pairs of chromosomes). That means that one individual can produce 2⁵ or 32 different gametic combinations. Moreover, the number of possible combinations that emerge from paring different gametes (sexual reproduction) can be calculated as (32)² = 1024 combinations.

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3 years ago
Are protist living or nonliving
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Answer:

Explanation: Bacteria and archaea are prokaryotes, while all other living organisms — protists, plants, animals and fungi — are eukaryotes. ... The vast majority of protists are unicellular or form colonies consisting of one or a couple of distinct kinds of cells, according to Simpson.

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What one is not a problem related to the timber industry?
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Answer:

chemicals are dumped into lakes and rivers

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all the other choices are results of cutting down trees

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cyanide is a poison that prevents mitochondria from using oxygen. as a result, the mitochondria cannot produce what?​
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the mitochondria would not be able to produce energy

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"the mitochondria is the powerhouse of the cell"

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