Retroviruses make __________ by the process of __________
a. RNA copies of DNA; reverse transcription
b. DNA copies of RNA; reverse transcription
c. genetic probes; Southern blotting
d. genetic probes; Northern blotting
e. telomerase; mutagenesis
B
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What area of the body will contain the smallest population of microorganisms?
a. Anal opening b. Fingertips c. Mouth d. Nose e. Eyes
Which of the following most accurately describes the process of DNA cloning?
a. set of laboratory procedures that consist of cutting a segment of DNA with restriction enzymes b. set of laboratory procedures that consist of isolating of a DNA fragment from a living organism and inserting it into a plasmid c. set of laboratory procedures that uses living cells to mass-produce specific DNA fragments d. set of laboratory procedures by which a DNA fragment is transferred from a living organism to a SNP chip e. the manipulation of DNA fragments in a laboratory using modern techniques of molecular biology
Microbiologists use the Gram stain to aid in the identification of bacteria. What is the major difference between Gram-positive and Gram-negative bacteria?
A. presence or absence of outer plasma membrane B. structure of nucleotides in the plasma membrane C. presence or absence of muramic acid in the cell wall D. presence or absence of peptidoglycan in the cell wall
Archaeal cell walls have the same chemical composition as bacterial cell walls.
a. true b. false