Which of the following is not a factor contributing to the loss of biodiversity?
A. overexploitation
B. disease
C. pollution
D. alien species
E. increased carrying capacity
Answer: E
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Which of the following is not a char of all living organisms?
a. response to stimuli b. adaptation c. sexual reproduction d. regulation of internal environment e. acquisition of energy
Plasmid cloning vector DNA is usually introduced into bacterial hosts by
A. ligation. B. transformation. C. plasmolysis. D. transduction.
The integration of phage DNA into the bacterial chromosome occurs because of
A. the phage's ability to synthesize an enzyme that integrates its DNA into the host's chromosome. B. the phage's ability to synthesize enzymes to enter the bacterium. C. similar RNA nucleotides in both. D. the similarity in enzyme metabolism. E. the phage's ability to synthesize enzymes to enter the bacterium AND similar RNA nucleotides in both.
In all animals, the largest percentage of the body's fluids are located in the:
A. intracellular compartment. B. plasma. C. hemolymph. D. extracellular compartment. E. interstitial fluid.