Which of the following is not true of specialized transduction?
A. It is restricted to those genes on either side of an integrated prophage.
B. The phage genome retains the full complement of phage genes.
C. It is carried out by temperate phage.
D. All of the choices are correct.
Answer: B
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Which of the following is the best explanation for why cholesterol decreases the permeability of biological membranes?
A) Cholesterol binds to the outside surface of a membrane, thus blocking the movement of solutes. B) Because cholesterol is amphipathic, it forms tiny vesicles that trap solutes. C) Because cholesterol is amphipathic, it fits in between the phospholipids and blocks diffusion through the membrane. D) Cholesterol has four rings in its structure that can sequester (trap) solutes.
________ would produce the smallest evolutionary change in a given period of time in a population of birds.
A. Natural selection B. Gene flow C. Mutation D. Migration E. Assortive mating
Explain why an aggregate fruit, such as a blackberry, would have a greater reproductive potential than a drupe (peach).
What will be an ideal response?
The endoplasmic reticulum is composed of flattened sacs called
A. vacuomes. B. cristae. C. thylakoids. D. cisternae.