Which of the following components is brought into a cell by HIV?

A) a DNA-dependent DNA polymerase
B) RNA polymerase
C) ribosome
D) reverse transcriptase


Answer: D) reverse transcriptase

Biology & Microbiology

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Two true-breeding stocks of pea plants are crossed. One parent has red, axial flowers and the other has white, terminal flowers; all F1 individuals have red, axial flowers. The genes for flower color and location assort independently

If 1000 F2 offspring resulted from the cross, approximately how many of them would you expect to have red, terminal flowers? A) 65 B) 190 C) 250 D) 565 E) 750

Biology & Microbiology

Which of the following animals have broad,

flat molars and reduced canines?

a. cows b. cats c. wolves d. humans e. more than one of these

Biology & Microbiology

Nitrogen is released into the atmosphere by

a. nitrogen fixation. b. denitrification. c. nitrification. d. ammonification. e. decomposition.

Biology & Microbiology

The difference between an akinete and endospore is that

A. Akinetes cannot resist stressful conditions whereas endospores can. B. Akinetes are not capable of locomotion whereas endospores move freely. C. Endospores cannot resist stressful conditions whereas akinetes can. D. Akinetes are whole cells filled with food, whereas endospores are bodies produced inside of cells. E. Akinetes are reproductive structures whereas endospores are dormant, resistant structures.

Biology & Microbiology