When a dog's brain detects the need to dissipate excess heat and the dog begins to pant, the brain acts as the _________________, and the panting behavior acts as the ________________.
A. stimulator; effector
B. integrating center; sensor
C. integrating center; effector
D. sensor; integrating center
C. integrating center; effector
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The contraceptive device that is a soft latex cup with a flexible rim that fits over a woman's cervix is a(n) _________.
Fill in the blank(s) with the appropriate word(s)
Metabolism refers to
A. chemical reactions such as photosynthesis. B. the process of reproduction. C. the formation of heterotrophs. D. a collection of hypotheses.
Science cannot answer certain faith-based questions because
A) there aren't enough variables. B) faith-based beliefs are impossible to either prove or disprove. C) faith requires deductive reasoning. D) scientists are not able to study human behavior.
The molecular fragment on an antigen molecule that a lymphocyte recognizes and responds to is called a/an
A. variable region. B. antigen binding site. C. epitope. D. hapten.