"Crossing over" is partially responsible for our genetic diversity. Indicate whether the statement is true or false


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Biology & Microbiology

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While eating lobster for dinner one night your friend asks what you think might happen if this marine invertebrate, which is normally isosmotic with respect to the surrounding seawater, were to be moved to a bay with a slightly lower salt concentration instead of being caught. You reply that, in order for the lobster to be isosmotic with respect to new environment,

A. it must move water in to match the solute concentration of its new environment. B. it regulates its internal concentration of solutes to match that of its new environment. C. it must move water out to match the solute concentration of its new environment. D. it moves water in or out and regulates its internal concentration of water as needed.

Biology & Microbiology

Atherosclerosis ____

a. decreases arterial lumen size b. affects the diameter of veins c. has no effect on arterial lumen size d. increases arterial lumen size e. presents many clinical symptoms immediately

Biology & Microbiology

As a consequence of the work of the biologist Theodor Engelmann, others showed that chloroplasts absorb light mainly in the _________ and _________ part of the spectrum.

A. blue-violet ... red-orange B. blue-violet ... green C. infrared ... ultraviolet D. blue ... red

Biology & Microbiology

The layer where organisms can exist on the surface of the earth is the

(a). biosphere. (b). ecosystem. (c). population. (d). homeostasis. (e). community.

Biology & Microbiology