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At a replication fork, the lagging strand consists of            that are joined by            .

Resident microbiota protect the body by

An E. coli culture that has been growing at 37°C is moved to 25°C. Which of the following changes must be made in its cell membrane?

Antiviral drugs that are nucleotide analogs affect the        phase of the viral replication cycle.

Which of the following would not be considered an emerging infectious disease?

How do enveloped viruses enter an animal cell?

Large or charged molecules can move across a cell membrane, up a concentration gradient, by

Which of the following structures of a eukaryotic cell is not likely derived from endosymbiotic bacteria?

Which of the following does a competitive inhibitor most closely resemble, structurally-speaking?

Non-toxic strains of Vibrio cholerae can become toxic when they are in the human intestine along with toxic strains of the bacteria which contain phage.  This suggests that the toxin genes are acquired through