Which of the following does NOT apply to parasitoids?
a. They are insects.
b. They kill animals on which they feed.
c. Their host usually survives.
d. The larvae develop in a host’s body.
e. Some are effective biological control agents.
ANSWER: c
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In flowering plants, petals form when ____ genes are turned on
a. only A b. only B c. only C d. both A and B e. both B and C
What do the peaks in the prey population graph signify?
a. At the top of the peak, the prey population is decreasing. b. At the top of the peak, the prey population is increasing. c. At the top of the peak, the prey population is neither increasing nor decreasing(dNprey/dt =0).
When the end product of a pathway inhibits catalysis of the first step of that pathway, this phenomenon is called
A. feedback inhibition. B. metabolic channeling. C. reversible covalent modification. D. non-competitive inhibition.
In recombinant DNA technique, an enzyme called ________ is needed to seal the sticky ends of genes into plasmids or chromosomes.
Fill in the blank(s) with the appropriate word(s).