Unlike the cell membrane, the cell wall is

A. found in all organisms
B. composed of a lipid bilayer
C. selectively permeable
D. a rigid structure


Ans: D. a rigid structure

Biology & Microbiology

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Biology & Microbiology

Marine biology is: a. the exact same field of study as oceanography

b. the study of living organisms that reside in the seas and oceans. c. a combination of many science disciplines. d. the study of the oceans and their associated phenomena.

Biology & Microbiology

The phrase all-or-none response describes a neuron-generated action potential. Explain what is meant by this phrase

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Biology & Microbiology

You are examining a new animal species.  You find that you can pass a line through any longitudinal plane and find equal halves.  Evaluate the symmetry of this animal.

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Biology & Microbiology