Which statement about the reductive division of meiosis is false?
A. During the reductive division, homologues migrate to opposite poles of the cell.
B. During the reductive division, sister chromatids migrate to opposite poles of the cell.
C. During the reductive division, centromeres do not divide.
D. At the end of the reductive division, each daughter nucleus has one-half as many centromeres as the parental nucleus.
B. During the reductive division, sister chromatids migrate to opposite poles of the cell.
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Which of the following is NOT a reaction pathway involved in the catabolism of arginine to generate ATP?
A. Citrulline + Pi ? ornithine + carbamyl-P B. Carbamyl-P + ADP ? ATP + CO2 + NH3 C. Arginine + 3 H2O ? CO2 + 4 ATP D. Arginine + H2O ? citrulline + NH3
The CFTR protein product is responsible for:a
pumping chloride ions out of the cell. b. pumping water out of the cell. c. pumping chloride ions into the cell. d. fighting off bacterial infections. e. regulating gene expression
Four of the five choices listed below can isolate
populations. Select the exception. a. geography b. behavior c. time d. gametes e. gene flow
Which of the following have unique antigens that can
stimulate an immune response? a. viruses b. bacterial cell walls c. tumor cells d. bacterial DNA e. all of these