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

Biology & Microbiology

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A homeotic gene regulates _____

a. where body parts form c. secondary sexual traits b. milk production d. sperm formation

Biology & Microbiology

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

Biology & Microbiology

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

Biology & Microbiology

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.

Biology & Microbiology