As a result of testing an experimental drip on a vertebrate cell, you notice that the cell cortex becomes
more fluid, and although the cell remains strong, it loses its ability to move. Based on this evidence,
you correctly conclude that the drug most directly affected:a.
?-tubulin.
b. ?-tubulin.
c. actin filaments.
d. myosin.
e. intermediate filaments.
C
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Destruction of which biome would result in the greatest loss of biodiversity?
A. desert B. grassland C. savanna D. taiga forest E. tropical rain forest
One strategy that allows larger cells to have an effective surface area to volume ratio is:
a. having a completely spherical shape. b. being short and fat. c. having thin, finger-like projections. d. having a thinner plasma membrane. e. locomotion
The outcome of the conflict between bacteria and bacteriophage at any point in time results from
A) frequency-dependent selection. B) evolutionary imbalance. C) heterozygote advantage. D) neutral variation. E) genetic variation being preserved by diploidy.
Which of the following is NOT an important characteristic of either Neisseria gonorrhoeae or Neisseria meningitidis?
A. M protein B. Pili C. Polysaccharide capsule D. IgA protease