Explain the relationship between DNA and proteins
What will be an ideal response?
DNA is the primary information-bearing molecule that directs the ordering of amino acids into a polypeptide chain.
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What term defines the characteristics that suit an organism to the conditions of a particular environment?
a. genotypes b. genetic drift
c. adaptations d. inheritance e. mutations
During which of the following phases of cellular respiration does substrate-level phosphorylation take place?
A) glycolysis only B) the citric acid cycle only C) oxidative phosphorylation only D) glycolysis and the citric acid cycle
During the 1960s, a group of scientists in the northeastern United States conducted an experiment at Hubbard Brook, New Hampshire. A 38-acre watershed was completely deforested and the runoff (water flow) monitored for several years. It was compared to an adjacent watershed that was left untouched. The scientists collected data during those years and found
A. an insignificant difference in the amount of nitrogen from the two areas. B. a tremendous increase in the total amount of runoff from Hubbard Brook although the loss of nitrogen was fairly consistent in both areas. C. no difference in the amount of runoff from the two areas. D. a tremendous increase in the amount of runoff and nitrogen release from Hubbard Brook compared to the control.
Formalin (37% formaldehyde) is used for
A. antisepsis. B. disinfection. C. sterilization. D. sanitization. E. both disinfection and sterilization.