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Exam 3 Chapters 7 and 8

Exam 3 Chapters 7 and 8

Q Question 1 0 / 2 pts A cell that obtains its energy from chemical sources and its carbon from organic compounds is known as a Question 2 2 / 2 pts A microbe that cannot live in the presence of oxygen is called a(n) Question 3 2 / 2 pts A micronutrient is one that Question 4 2 / 2 pts Which of the following methods would give an accurate direct count of live organisms in a large, densely populated broth culture? Question 5 2 / 2 pts A microbiologist inoculates a growth medium with 100 bacterial cells. If the generation time of the species is 1 hour and there is no lag phase, how many cells will be in the culture after 2 hours of growth?

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1.chemoautotroph 2.obligate anaerobe 3.is necessary in small amounts. 4.viable plate count 5.400