Some predators feed primarily on the most abundant prey. This is an example of ________ predation
A) density-independent
B) cyclical
C) exponential
D) competitive
E) density-dependent
E
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IgG is the:
a. first antibody produced when an invading microorganism is initially encountered. b. antibody that is associated with various parasitic infections. c. antibody that is secreted in various body fluids and primarily protects those body surfaces lined with mucous membranes. d. second antibody produced when an in-vading microorganism is initially encoun-tered and the most abundant.
When a farmer grows cotton containing the gene for Bt toxin, insects that are resistant (rr) survive and reproduce. These insects were resistant because
A. the insecticide caused mutations to generate resistant alleles. B. they inherited the alleles that made them resistant. C. the insects wanted to survive the insecticide and mutated their DNA. D. by random chance some insects did not die from the insecticide. E. the insects were able to produce gametes that were resistant to the insecticide.
What percentage of parents decide to terminate a Down Syndrome pregnancy?
A. 10 percent D. 70 percent B. 30 percent E. 90 percent C. 50 percent
Chocolate agar can be described as
A. Differential B. Transport C. Selective D. Enriched