If you were able to increase the kinetic energy of the molecules inside your body, how would this affect your body temperature?
A. It would increase.
B. It would remain the same.
C. It would decrease.
Answer: A
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The feeding chambers inside the sponge are lined with specialized cells that generate a directed water current through the sponge and trap and ingest microscopic food particles. What are these cells called?
a. amoebocytes b. sclerocytes c. choanocytes d. pinacocytes
Plant cells are capable of
a. photosynthesis. b. ATP production. c. glucose breakdown. d. aerobic respiration. e. all of these.
During the biosynthesis and transport of collagen from the endoplasmic reticulum through the Golgi apparatus to the cell surface, collagen fibrils form extracellularly rather than intracellularly. Which of the following does not help to explain why this happens?
a. Type I procollagen synthesized in cells contains nonhelical segments at each end of the polychain that limit their ability to oligomerize into collagen fibrils. b. Procollagen must be soluble and small enough to fit within the intracellular transport machinery. c. Type I procollagen cannot form the triple helical oligomers that are the core structure of any collagen oligomer. d. Type I procollagen contains hydroxylated proline and lysine residues that prevent polypeptide chain oligomerization within the cell.
Which of the following statements is FALSE?
A) DNA polymerase joins nucleotides in one direction (5' to 3') only. B) The leading strand of DNA is made continuously. C) The lagging strand of DNA is started by an RNA primer. D) DNA replication proceeds in only one direction around the bacterial chromosome. E) Multiple replication forks are possible on a bacterial chromosome.