In which of the following biological systems
have radioactive tracers been used?
a. cells
b. bodies
c. ecosystems
d. all of these
e. all of these except ecosystems
D
Biology & Microbiology
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Inhibitory postsynaptic potential (IPSP) is associated with membrane depolarization, whereas excitatory postsynaptic potential (EPSP) is associated with hyperpolarization
A. true B. false
Biology & Microbiology
A plant hormone has the same effects in different plant tissues
a. True b. False
Biology & Microbiology
All amphibians must return to the water to
A. feed. B. breathe. C. reproduce. D. All of these answers are true.
Biology & Microbiology
Plants first colonized the land during the Mesozoic Era
a. true b. false
Biology & Microbiology