What pH conditions favor the growth of most bacteria?
A. pH 2
B. pH 5
C. pH 7
D. pH 9
E. Bacteria can grow at all ranges of pH.
Answer: C
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__________ stimulate cell division, release lateral buds from apical dominance, and inhibit
senescence. Fill in the blank(s) with the appropriate word(s).
Which of the following are true statements regarding
the use of DNA in evolutionary comparisons? a. Lineages have a mixture of ancestral and novel characters. b. Mutations inevitably change those sequences over time. c. Mutations occur randomly. d. Most mutations are neutral. e. All of these are true.
Evolutionary modifications that improve the survival and reproductive success of an organism arecalled:a
mutations. b. vestigial structures. c. homoplastic traits. d. artificial traits. e. adaptations.
A transmembrane protein differs from other membrane proteins because it:
a. completely extends through the membrane. b. is a glycoprotein with carbohydrates attached. c. is completely embedded within the membrane. d. is attached to the inside of the membrane by an ionic bond. e. is covalently linked to the outer surface of the plasma membrane.