An ecosystem is made up of ____
a. only plants, animals and fungi
b. organisms and nonliving things
c. only rocks and minerals
d. only plants, protozoa, and fungi
e. the biosphere of the region
ANSWER: b
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Which of the following animals is correctly paired with its feeding mechanism?
A) lion â€" substrate feeder B) baleen whale â€" fluid feeder C) aphid â€" suspension feeder D) clam â€" substrate feeder E) snake â€" bulk feeder
When is a bacterial cell more likely to be phagocytized?
A) when antibody binds antigen on its surface B) when compliment binds an antigen-antibody complex C) when antibody recognizes self antigens D) after antibody class-switching
Adaptive radiation would be described by:
a. the dinosaurs going extinct. b. coelecanths. c. Darwin’s finches. d. rats and warfarin. e. all of these.
Which of the following is an important characteristic for a model organism?
A) marginally characterized B) difficult to manipulate in the laboratory C) prone to random changes that alter primary characteristics D) widely studied E) all of the above