The Hardy-Weinberg law can be used to calculate allele and genotype frequencies without genetic testing
a. True
b. False
True
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Small cells function more effectively, because as cells become larger their surface area to volume ratio:
A. decreases. B. is cubed. C. increases. D. stays the same. E. is squared.
Choose the most correct statement about the two phases of photosynthesis
a. The light-dependent reactions occur in the cytosol; the light-independent reactions occur in the stroma. b. The products of the light-dependent reactions are ATP, NADPH, and O2; the products of the light-independent reactions are ADP, NADP+, and sugar. c. The light-dependent reactions occur during the daylight hours; the light-independent reactions occur when it is dark. d. The light-dependent reactions produce water as a by-product; the light-independent reactions produce carbon dioxide as a waste product. e. The products of the light-dependent reactions are ADP, NADP+, and O2; the products of the light-independent reactions are ATP, NADPH, and sugar.
Which of the following is not a function of the glycocalyx in prokaryotes?
A. protein synthesis B. attachment C. resistance to drying D. protection from immune system cells E. production of biofilms
Why must T cell activation take place outside the thymus?
A. An activated T cell could destroy the other maturing T cells. B. Many T cells are self-reactive and must be eliminated in the thymus before any possibility of activation. C. An activated T cell could then destroy the thymus gland itself. D. Other cell types might be accidentally activated in the thymus.