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ipn [44]
3 years ago
10

What is the main idea?

Biology
2 answers:
Fynjy0 [20]3 years ago
4 0

Answer:

the second one

Explanation:

iragen [17]3 years ago
3 0
It’s the Second one
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Answer:

Type A blood or Type B blood

Explanation:

O is a recessive trait so both allels would have to be O for it to be O type blood, and none of the punett squares contain 2 O's

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In facilitated diffusion, __________ proteins provide openings in the plasma membrane for substances to flow through without cha
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Answer: CHANNEL PROTEINS provide openings in the plasma membrane for substances to flow through without changing structure, and CARRIER PROTEINS allow passage of substances through the plasma membrane after undergoing a subtle change in shape.

Explanation: They are described thus:

A channel protein is a protein that allows the transport of specific substances across a cell membrane.

Carrier proteins are proteins that carry substances from one side of a biological membrane to the other. Many carrier proteins are found in a cell’s membrane, though they may also be found in the membranes of internal organelles such as the mitochondria, chloroplasts, nucleolus, and others.

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