In homeostatic control, the ________ compensates for any deviation between the actual value and the set point. In body temperature regulation in mammals, this function is carried out by ________.
A. effector; brain
B. effector; skeletal muscle
C. sensor; neurons
D. integrator; skeletal muscle
E. integrator; brain
Answer: B
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What type of bonding is likely to occur between two water molecules or strands of DNA?
A. covalent. B. ionic. C. hydrogen. D. both hydrogen and covalent. E. both hydrogen and ionic.
The fossil record is incomplete because
a. very few organisms were preserved as fossils. b. organisms tend to decay before becoming a fossil. c. animals with hard parts are preserved more easily. d. geological processes may destroy fossils. e. all of these
When a protein is synthesized, cis- or trans-splicing of that protein occurs ________.
A. during transcription B. prior to transcription C. between transcription and translation D. following translation
To support the world population at the same standard of living as we have in the United States would require ________ times the resources that are available on Earth today
A) 2 B) 1.5 C) 20 D) 5 E) 10