Parathyroid hormone and calcitonin both function to regulate _______________
Fill in the blank(s) with the appropriate word.
Ans: blood calcium levels
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A(n) ____ skeleton is an internal fluid filled chamber against which muscles exert force
a. exoskeleton b. hydrostatic c. hydrophobic d. hydrophilic e. endoskeleton
Which of the following statements best summarizes the differences between RNA and DNA?
a. RNA is a protein and DNA is a nucleic acid. b. DNA is a polymer and RNA is a monomer. c. DNA comprises the genes, while RNA is a direct participant in the process of protein synthesis. d. RNA is a single-stranded form of DNA. e. DNA is the primary energy currency of all cells.
Whole genome duplication, referred to as _______, was likely a major factor in the rapid diversification of angiosperms.
A. Homospory B. Heterospory C. Polyploidy D. Self-fertilization E. Double fertilization
You are studying an enzyme-catalyzed reaction that induces a particular cellular activity in the lab. If you wanted to slow down that particular cellular activity by controlling the enzyme, what could you do?
A. increase the pH of the media the cells are growing in to the optimum pH B. decrease the temperature of the incubator where the cells are growing C. add an allosteric activator to the cells D. add cofactors to the media the cells are growing in