An ecosystem contains
A. only the food relationships found in the local environment.
B. only the biotic components of the local environment.
C. only the abiotic components of the local environment.
D. both the biotic and the abiotic components of the local environment.
E. only the energy flow components of the local environment.
Answer: D
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Which of the following regions of a structural gene contains the information that specifies an amino acid sequence?
A. promoter region B. transcribed region C. terminator D. regulatory sequence E. enhancer region
Members of this group typically consist of amoeboid cells surrounded by a hard outer shell through
which cytoplasmic projections extend. a. rhizarians b. archaeplastids c. unikonts d. euglenoids e. opisthokonts
Frog eggs most closely resemble
A. alligator eggs. B. platypus eggs. C. fish eggs. D. chicken eggs.
Under which condition will a population experience growth?
A. When N is less than K B. When r equals zero C. When N equals K D. When dN/dt equals zero E. When N equals zero