A hypothesis is
A) the same as a theory.
B) a proposed explanation for a set of observations.
C) an explanatory idea that is broad in scope and supported by a large body of evidence.
D) a widely accepted idea about a phenomenon.
Answer: B
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Genetic recombination involving insertion sequences typically results in what type of mutation?
A) base-pair substitution mutation B) silent mutation C) frameshift mutation D) base-pair deletion mutation
Certain complexes of the mitochondrial electron transport chain pump protons. Which of the following best describes the movement of protons in this situation?
A. across the outer mitochondrial membrane, from the cytoplasm to the intermembrane space B. across the outer mitochondrial membrane, from the intermembrane space to the cytoplasm C. across the inner mitochondrial membrane, from the intermembrane space to the matrix D. across the inner mitochondrial membrane, from the matrix to the intermembrane space
When an aminoacyl-tRNA synthetase charges a tRNA, which molecule is released?
A. mRNA B. ATP C. AMP D. pyrophosphate E. AMP and pyrophosphate
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