H. pylori is able to survive the acidic environment of the stomach as a result of adaptations that allow it to increase the pH of the immediate environment
Indicate whether the statement is true or false
TRUE
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Which of the following is most likely to grow at refrigerator temperatures?
A. mesophiles B. psychrophiles C. thermophiles D. acidophiles
The primary function of DNA ligase is to
a. cut the two strands of DNA molecule prior to replication. b. attach free nucleotides to a growing chain. c. remove bases that might have been inserted incorrectly. d. seal any tiny gaps in the new DNA. e. fragment old DNA that is no longer of use to the cell.
The organisms associated with patches of floating ocean vegetation would be an example of:
a. random dispersion b. density-independent distribution c. uniform dispersion d. density-dependent distribution e. clumped dispersion
amino acides that cannot be produced by the body are called __________ amino acids
Fill in the blank(s) with the appropriate word(s).