What forms during aerobic respiration that is detoxified by antioxidant molecules in the cell's cytoplasm?
a. free electrons
b. alcohol
c. reduced coenzymes
d. free radicals
e. carbon dioxide
d
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A homeotic gene regulates _____
a. where body parts form c. secondary sexual traits b. milk production d. sperm formation
Substitution of one base pair for another can result in a __________ mutation that results in the
conversion of an amino acid specifying codon to a termination codon. a. nonsense b. frameshift c. chromosomal d. missense e. silent
The saguaro is a giant cactus that is found in desert regions of Arizona. This is information about the cacti's ________
A) habitat B) niche C) biosphere D) succession
A molecular clock for evolution is based on
A. fossil records of organisms. B. cellular structures of organisms. C. nucleotide sequences in the genomes of organisms. D. enzymatic activities of organisms.