Why is human blood clotting factor VIII produced by genetically engineered bacteria better to treat hemophilia type A
than the clotting factor isolated from human or animal blood?
a. Recombinantly produced clotting factor has a longer shelf life than natural clotting factor.
b. Clotting factor isolated from blood can transmit infectious agents present in the donated blood.
c. Clotting factor isolated from human blood is quickly degraded.
d. Recombinantly produced clotting factor is stable at high temperatures.
e. Clotting factor from blood has a lower activity than recombinant clotting factor.
b
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During the G2 checkpoint in eukaryotic cells, the cell is assessed with regard to
A) DNA replication. B) chromosome attachment to the spindle. C) nutrients. D) DNA damage. E) presence of growth factors.
Smooth muscle tissue ____
a. is found in the heart wall b. has parallel arrays of long cells c. is multinucleated d. contracts reflexively e. is found in the walls of soft internal organs
Somatic system fibers in nerves carry
information a. to and from receptors. b. to and from effectors. c. from receptors in skin, tendons, and skeletal muscles. d. to skeletal muscles. e. from receptors in skin, tendons, and skeletal muscle and to skeletal muscles.
Nesting geese will roll softballs (placed next to their nests by biologists) into their nests, perhaps because the balls resemble eggs that might have rolled out of the nest. This behavior is most likely
A) insight learning. B) conditioned. C) innate. D) habituation. E) trial-and-error learning.