What is the purpose of the sex pilus?
a. to form a gap junction and conjugate
b. to allow transfer of gametes
c. to facilitate DNA exchange
d. to stabilize a network of bacterial cells
Ans: c. to facilitate DNA exchange
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Of all the different codons that exist, three of them
a. are involved in mutations. b. do not specify a particular amino acid. c. cannot be copied. d. provide punctuation or instructions such as "stop." e. do not specify a particular amino acid but do provide punctuation or instructions such as "stop."
If a dialysis bag filled with water is placed in a molasses solution, what do you predict will happen to the weight of the bag over time? Why?
What will be an ideal response?
Which of the following is unique to archaea?
A) hypotonic B) hypertonic C) isotonic D) fluid mosaic E) passive
Which of the following is NOT true regarding
guppies of the species Poecilia reticulata? a. Males are generally smaller than the females. b. Males are more brightly colored than the females. c. Males continue growing after reaching sexual maturity. d. The male’s colors serve as visual signals for mating. e. They have complex mating rituals.