The energy to move chromosomes during mitosis is provided by
a. centrioles.
b. DNA polymerization.
c. migration of the centrosomes.
d. formation of the cell plate.
e. ATP.
Ans: e. ATP.
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Erythropoietin from the kidneys stimulates production of ________ .
a. glucagon b. insulin c. gastrin d. T cells e. red blood cells
Would you expect dialysis membrane to be permeable to egg albumin, a protein with molecular weight of approximately 36,800? Why or why not?
What will be an ideal response?
The resistance of Archaeans to extremes of temperature, salinity, and pH is thought to be due to what structural feature?
a. covalent crosslinking among membrane phospholipids b. phospholipids that spin, drift, and wiggle without leaving the bilayer c. membrane proteins that are covalently bonded together d. high proportion of unsaturated fatty acids in phospholipids
Physiological changes in ectotherms that change their temperature tolerance as the seasons change
from winter to summer are called
a. estivation. b. hyperthermia. c. thermal acclimatization. d. hypothermia. e. hibernation.