Cells will export large molecules across the plasma membrane by

1.diffusion.
2.osmosis.
3.exocytosis.
4.endocytosis.
5.phagocytosis.


3

Biology & Microbiology

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Normal flora ________ colonization of pathogenic organisms

A) promote B) prevent C) maintain D) accelerate

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Isomers are defined as:

A. molecules with the same number of carbon atoms but potentially different numbers of other atoms. B. molecules with the same chemical formula but different structures. C. atoms with the same number of protons but different numbers of neutrons. D. molecules with the same general three- dimensional structures but different chemical formulas. E. molecules with different chemical formulas but similar biological functions.

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________ is a hormone produced by the kidneys that increases the rate of red blood cell production

Fill in the blank(s) with correct word

Biology & Microbiology

In plant cells, chloroplasts are found ____.

A. on the cell membrane B. in the cytoplasm of the cell C. in the stroma D. in the thylakoids E. in the central vacuole

Biology & Microbiology