Species with an opportunistic, or r-selected, life history strategy
A. are long-lived.
B. are limited primarily by carrying capacity.
C. provide extensive care for their offspring.
D. produce many offspring.
E. reproduce later in life.
D. produce many offspring.
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Why does DNA pol I carry the number one?
A. It was the first polymerase isolated from E. coli. B. It is the first polymerase to be activated during DNA replication. C. It is the only polymerase that has both 3' to 5' and 5' to 3' exonuclease activity. D. It is the smallest polymerase.
Which of the following organisms cause
malaria?
a. a virus b. a bacterium c. an insect d. a fungus e. a protist
Consider the biochemical pathway below, where A, B, and C are substrates and products and E1 and E2 are the enzymes that catalyze the reactions. If Enzyme 1 (E1) is inactive, which of the following compounds will accumulate?
A>e1>B>e2>C C only B only A only B and C A and B
Which of the following can affect a small, endangered population so severely that it goes extinct?
A) Lost alleles and/or low genetic diversity B) Increased mating opportunities C) Sexual selection D) Artificially adding new genes E) Matings with a closely related species