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
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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.
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
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.
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