In a chemical reaction, glyceraldehyde-3-phosphate + NAD+ yields 1,3-bisphosphoglycerate + NADH. In this reaction, what happened to NAD+?
A. It was oxidized to form NADH
B. It was reduced to form NADH
C. It was activated to form NADH
D. it served as an enzyme to catalyze the reaction, and at the end of the reaction formed NADH
B
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A hydrogen bond involving only parts of the backbone in a single strand of a protein would be
considered part of the ____ structure of the protein
a. primary b. secondary c. tertiary d. quaternary e. linear
When Shakespeare wrote about the world as a stage
and each of us being players, he was unknowingly referring to the biological concept of a. succession. b. the niche. c. different habitats. d. feeding levels. e. interspecific competition.
In the Hardy-Weinberg equation, p and q are ________.
A. phenotypes B. genotypes C. measures of fitness D. mutation rates E. allele frequencies
Science can, or can attempt to, answer all of the following questions except _____.
A) why the parrotfish is green B) how the cheetah became such a swift predator C) the purpose for human life D) how the carbon atom is constructed E) if smoking harms a person's health