What would you expect to see if you forgot to perform step 2 of the Gram stain procedure?
a. Gram-positive cells would appear purple and Gram-negative cells would appear pink.
b. All bacteria would appear pink.
c. Gram-positive cells would appear pink and Gram-negative cells would appear purple.
d. All bacteria would appear purple.
Answer: b. All bacteria would appear pink.
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For natural selection to occur, what must be present in a population?
a. genetic drift b. gene flow c. decent with modification d. variation
The DNA molecule is most similar
functionally to a
a. pair of scissors. b. flash light battery. c. cookbook. d. ballpoint pen. e. craft kit of ceramic tiles.
A group of similar tissues that work together to perform a particular function is called...
a) an organ b) an organ system c) a body d) an organism
The key enzyme that regulates glycolysis by responding to changing levels of ATP is hexokinase
a. True b. False