The most likely place where an exoenzyme participates in a chemical reaction is ________.
A. outside of the cell
B. within the cell membrane
C. in mitochondria
D. in lysosomes
E. in cytoplasm
Answer: A
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Bacterial and eukaryotic replication have many similarities. Which of the following is not a true comparison?
A. Both form loops with the lagging strand template to accommodate the antiparallel nature of DNA. B. Both incorporate a sliding clamp mechanism in their replication polymerase. C. Both the primase of bacteria and Pol ? of eukaryotes are responsible for primer synthesis and only incorporate ribonucleotides. D. Eukaryotic replication rates are slower than bacterial rates. E. The Okazaki fragments generated in eukaryotes are shorter than those in bacteria.
In males, genes on the X chromosome are
A) expressed. B) disease-causing. C) mutant. D) autosomal.
How do lipid insoluble hormones affect targets within the cell?
a. They bind to channel proteins for transport into the cell. b. They hydrolyze receptors for lipid soluble hormones, blocking their action. c. They trigger the release of a second messenger in the cytoplasm. d. Lipid insoluble hormones are synthesized and remain inside the cell.
Each of the following proteins is a component of both costameres and focal adhesions except
A) ?1-integrin. B) vinculin. C) talin. D) ?-actinin. E) dystrophin.