The polymerase chain reaction (PCR) uses ________ and a heat-resistant DNA polymerase to rapidly
increase the number of molecules of a DNA fragment. Fill in the blank(s) with the appropriate word(s).
primers
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On a class field trip, students swabbed, dug, and dipped samples of life from numerous places around campus. Back in the lab, one of the organisms found was unknown to the professor, or any reference books available, and could not be identified. It came from the edge of a marsh, and the sample smelled of hydrogen sulfide (rotten eggs). The single cells were found to survive only in a container that had sulfate in it, but also had the oxygen removed by burning a candle. This is likely an organism that uses for cellular respiration.
A. lactic acid fermentation B. alcohol fermentation C. only glycolysis D. aerobic respiration E. anaerobic respiration
A drop in blood volume would trigger the body to secrete
a. parathyroid hormones. b. somatotropin. c. antidiuretic hormones. d. insulin. e. glucocorticoids.
Recombinant DNA
a. is crucial in genetic engineering. b. can be produced with new biological techniques. c. uses restriction enzymes for its creation. d. relies on bacterial plasmids. e. all of these
___________________ are chemical signals released into a synapse between two neurons. Fill in the blank(s) with the appropriate word(s)