What is the end point of the methylene blue reductase test?
A) When 50% of the tube has turned blue
B) When 50% of the tube has turned white
C) When 80% of the tube has turned blue
D) When 80% of the tube has turned white
D) When 80% of the tube has turned white
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Bioluminescence genes have been transferred to
Escherichia coli bacteria in order to a. identify an antibiotic effective against the strain. b. kill them. c. locate them in the patient. d. cause them to become noninfective. e. demonstrate their metabolic activity.
Cilia and flagella are most directly involved in:
a. metabolism. b. movement. c. maintaining homeostasis. d. muscle contraction. e. cell signaling
The thin envelope of life that surrounds the earth's surface is called the ________.
A. atmosphere B. hydrosphere C. biosphere D. ecosystem E. lithosphere
Any monohybrid cross consisting of one dominant and one recessive allele for the trait studied should result in a ratio of ______________ dominant to __________________ recessive.
a) three; one b) one; one c) one; two d) two; one e) one; three