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xxMikexx [17]
2 years ago
13

an artery ______________________. a. brings blood back toward the heart b. has valves that prevent blood from flowing backward c

. usually (but not always) carries oxygen-rich blood d. has thin, slightly elastic walls
Biology
1 answer:
inessss [21]2 years ago
8 0

An artery ______________________.

c. usually (but not always)  carries oxygen-rich blood

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How energy is transferred in an ecosystem
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Answer:

Just start by writing out a chart. Like, sun supplies grass, grass helps bug, and so on :)

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2 years ago
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The first question is the first option (4 haploid cells; 2 diploid cells).
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8 0
2 years ago
Which statement about plasma membranes is correct?
diamong [38]

The statement that is correct about plasma membranes is that both plant cells and animal cells have flexible plasma membranes (option C).

<h3>What is the plasma membrane?</h3>

Plasma membrane is the semipermeable membrane that surrounds the cytoplasm of a cell. The semi-permeability of the plasma membrane means it allows some molecules through but blocks other substances.

The plasma membrane is the cellular structure that protects and encompasses the cell's content.

All living organisms possess the plasma membrane, which is also called cell membrane.

Therefore, the statement that is correct about plasma membranes is that both plant cells and animal cells have flexible plasma membranes.

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8 0
1 year ago
When you eat salmon for dinner, your digestive system will break down that food
zimovet [89]

Answer:   c. Amino Acids

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Food is chemically and mechanically broken down into smaller particles like building blocks, the smallest of these are a basic unit called monomers. In the <em>stomach</em>, the enzyme pepsin breaks proteins, like those found in salmon, into smaller peptides by splitting the peptide bonds holding the proteins together. The <em>duodenum</em> processes these newly-formed peptide chains or polypeptides, into smaller ones, through the enzyme action of elastase, trypsin and chymotrypsin; these are produced in the pancreas. Peptidases convert these fragments into amino acid monomers for absorption into the bloodstream via the small intestines.

6 0
3 years ago
Name the invention that made agriculture much more efficient
elixir [45]

Answer:

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The Grain Elevator.

Hay Cultivation.

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Explanation:

there are some agriculture inventions  

4 0
3 years ago
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