Macroevolution is change among

a. groups of species.
b. individuals of one species.
c. individuals of several species.
d. groups of populations.
e. groups of individuals of several populations.


A

Biology & Microbiology

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The active maintenance of a constant environment is referred to as:

A. homeostasis. B. equilibrium. C. stability. D. symmetry. E. balance.

Biology & Microbiology

Homeostasis is maintained using negative feedback loops.   Which part of a negative feedback loop detects conditions?  

A.  response B.  effector C.  sensor D.  integrating center E.  stimulus

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Chlorophyll and accessory photosynthetic pigments are associated with the:a

stroma. b. thylakoid membranes. c. mesophyll membranes. d. light reaction centers of the stroma lamellae. e. stroma grana.

Biology & Microbiology

Anaphylactic shock ________

A) occurs when blood vessels constrict abruptly B) is a symptom of an immunodeficiency disease C) causes blood pressure to drop dangerously D) has no treatment

Biology & Microbiology