Base pairs in DNA are held together by ________ bonds.

A. polar covalent
B. hydrogen
C. peptide
D. sulfhydryl
E. nonpolar covalent


Answer: B

Biology & Microbiology

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The fact that cells of genetically uniform population do not have similar phenotypic attributes is called ________ heterogeneity.

A. population B. dissimilar C. quorum D. epigenetic

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Which of the following builds up between the two

membranes of the mitochondria? a. pyruvate b. acetyl-CoA c. hydrogen ions d. electrons e. NADH

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A genetic sex disorder that affects females only and consists of missing an X chromosome is known as ________

Fill in the blank(s) with the appropriate word.

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The bacterium Thermus aquaticus is to polymerase chain reaction (PCR) as __________ is to __________.

a. penicillin mold; curing bacterial infections in humans b. Streptococcus pyogenes; HIV c. mitochondria; protists d. non-pathogenic bacteria; disease e. conjugation; transduction

Biology & Microbiology