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slava [35]
2 years ago
8

What would I choose? Please help me!!??

Biology
1 answer:
sp2606 [1]2 years ago
8 0

Answer:

I believe your answer is B. Sorry if I am wrong.

Explanation:

I hope I helped

Have an AMAZING day. :)

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Which of the following is TRUE of a cell membranes?
adoni [48]

Answer:

B, C, Dand E are all correct

Explanation:

Why B is correct- The cell membrane, also known as the plasma membrane, is a double layer of lipids and proteins that surrounds a cell and separates the cytoplasm (the contents of the cell) from its surrounding environment. It is selectively permeable, which means that it only lets certain molecules enter and exit.

Plants, animals, and bacteria have a cell membrane. Why d is correcect

Why C is correct- The cell membrane is not a solid structure. It is made of millions of smaller molecules that create a flexible and porous container. Proteins and phospholipids make up most of the membrane structure.

Why E is correct- The plasma membrane is primarily composed of phospholipids arranged in a bilayer, with the hydrophobic tails on the interior of the membrane, and the hydrophilic heads pointing outwards

Why A Is Not correct- It is very fragile and its role is to hold the cell together and to help control what substances can get in and out. It is partially permeable, allowing only some substances to pass through it. The membrane has a complex structure consisting of a phospholipid bi-layer and different types of proteins.

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3 years ago
Now that you have come up with an equation that describes the relationship between amounts of different nucleotide bases in DNA,
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Answer:

G=21 %

T= 29 %

A= 29 %

Explanation:

Since C only binds to G, you have the same amount of C and G, so G is 21 %.

100 % minus 42 % ( 21 % C plus 21 % G=) equals 58 %.

So the other 58 % is made of T and A. Since T only binds to A , the half of the extra 58 % is T and the other half is A. Therefore 29 % is T and 29 % is A

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3 years ago
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A student wants to develop an explanation of the role cellular respiration and photosynthesis play in the cycling of matter.
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D. Which cell organelles carry out the process of photosyinthesis and cellular respiration?

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Base substitutions in coding regions that result in changed amino acids are called
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Missense mutations.

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