Adding ________ to municipal water supplies will reduce the rate of tooth decay
A) peroxide B) fluoride C) aldehyde D) chloride
Answer: B
Biology & Microbiology
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The pairing of chromosomes and crossing over
occur during
a. metaphase I. b. anaphase II. c. prophase I. d. prophase II. e. more than one of these.
Biology & Microbiology
The ureters drain urine into the
a. renal pelvis. b. cecum. c. urinary bladder. d. small intestine.
Biology & Microbiology
Enzymes called __________ form breaks in the DNA molecules to prevent the formation of knots in
the DNA helix during replication. a. topoisomerases b. single-strand binding proteins c. DNA polymerases d. RNA polymerases e. DNA ligases
Biology & Microbiology
Assume the Na+ is being transported across a membrane via facilitated diffusion. Which of the following conditions would allow for the most transport of Na+ across the membrane?
Biology & Microbiology