C. proteins-
The cytoskeleton is what provides structural support for a cell, and the cytoskeleton is made out of fibrous proteins.
Hope that helped!
A. Survival of the fittest and natural selection are interchangeable terms.
These are the following answers to the items
cell engulfs molecules in cell "drinking": pinocytosis<span>
molecules helped by protein; move insoluble molecules across plasma membrane: </span>facilitated diffusion
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molecules move in and out freely from high to low concentration: </span>passive diffusion
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cell engulfs microorganisms in cell "eating": </span>phagocytosis<span>
molecules "pumped" in or out from low to high concentration: </span>active transport<span>
oxygen, carbon dioxide: </span>passive diffusion<span>
transports sodium, potassium: </span>active transport<span>
transports glucose, amino acids: </span>pinocytosis
What exercise? Post a picture of it.
Answer:
volcanoes, hurricanes, and earthquakes
Explanation:
