The energy level listed below with the most energetic electrons is
A. 1.
B. 2.
C. 3.
D. None of these. All energy levels contain electrons of equal energy.
C. 3.
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The bacterial species most frequently associated with necrotizing fasciitis is:
A) Francisella tularensis. B) Staphylococcus aureus. C) Streptococcus pneumoniae. D) Streptococcus pyogenes.
Which greenhouse gas is released by bacteria engaged in anaerobic metabolism?
a. nitrous oxide b. carbon dioxide c. methane d. ozone
Which of the following is a method of gene amplification that involves complementary primers and uses heat to unzip DNA to make multiple copies of a particular gene?
A) vector B) polymerase chain reaction C) sticky ends D) recombinant
Metabolism is the sum of all the:
A) chemical reactions that a cell carries out. B) energy a cell uses. C) ATP a cell contains. D) enzymes a cell contains. E) vitamins a cell contains.