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love history [14]
3 years ago
6

What is the function of a cell membrane? Select one: a. It packages and stores most of the material in a cell. b. It regulates w

hat materials enter and leave the cell. c. It regulates the amount of ATP the cell produces. d. It helps the cell to manufacture proteins.
Biology
2 answers:
oksano4ka [1.4K]3 years ago
8 0
It is most likely b.it regulates what materials enter and leave the cell
notsponge [240]3 years ago
7 0
The cell membrane<span> is selectively permeable to ions and organic molecules and controls the movement of substances in and out of </span>cells<span>.</span>
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Protein transport into the endoplasmic reticulum (ER) or mitochondria requires unfolding of the protein and threading the amino
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Answer:

The nuclear pore complex is a huge structure composed of about 30 different pore proteins, and its central channel has a diameter of approximately 10-40 nm, which is large enough for even very large protein complexes. For this reason, it is unnecessary to unfold the protein, which can pass through the pore in its native state.

Explanation:

  • Protein transport into the endoplasmic reticulum (ER) or mitochondria requires unfolding of the protein and threading the amino acid chain through a channel or pore into the organelle.
  • In contrast, protein transport into the nucleus does not require unfolding of the protein.
  • This is because, nuclear pore complex is a huge structure composed of about 30 different pore proteins, and its central channel has a diameter of approximately 10-40 nm, which is large enough for even very large protein complexes. For this reason, it is unnecessary to unfold the protein, which can pass through the pore in its native state.
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<span>After discovering and improving the microscope, Robert Hooke discovered cells. This is just one example of how it changed the study of organisms. With the microscope, we could see and find microscopic life like bacteria and see the cells, shape, color, and other materials such as the organelles the organisms were made of.</span>
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Read 2 more answers
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