Which term refers to the presence of both male and female reproductive tissue in the same individual?
a. vivipary
b. ovovivipary
c. ovipary
d. hermaphroditism
Ans: d. hermaphroditism
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Which of the following pairs of base sequences could form a short stretch of a normal double helix of DNA?
A) 5'-purine-pyrimidine-purine-pyrimidine-3' with 3'-purine-pyrimidine-purine-pyrimidine-5' B) 5'-AGCT-3' with 5'-TCGA-3' C) 5'-GCGC-3' with 5'-TATA-3' D) 5'-ATGC-3' with 5'-GCAT-3' E) All of these pairs are correct.
Which of the following statements regarding cancer is false?
A) Rate of cell division is critical. B) Balance between differentiation and proliferation is important. C) As cells become more differentiated, their capacity to divide decreases. D) Balance in cell growth is achieved when division results in no net gain of cells. E) In tumor cells, division and differentiation are uncoupled.
A behavior that benefits others at a cost to oneself is known as
A. cooperation. B. altruism. C. aggression. D. group selection. E. cognition.
Which one of the following would you predict is an allosteric inhibitor of the Krebs cycle enzyme, ?-ketoglutarate dehydrogenase?
A) citric acid B) ?-ketoglutaric acid C) NAD+ D) NADH E) ADP