Which of the following media provides the factors necessary for the growth of Haemophilus spp.?
a. 5% sheep blood agar
b. Brain-heart infusion agar
c. Chocolate agar
d. Nutrient agar
C
Chocolate agar provides the factors (i.e., hemin [X factor] and NAD [V factor]) that are neces-sary for the growth of Haemophilus spp. Most strains will not grow on 5% sheep blood agar, which contains hemin but not NAD.
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a. are a renewable source of energy b. do not produce carbon dioxide when burned
c. are made from organic remains of ancient organisms d. release energy without using oxygen e. do not damage the environment
Which of the following is NOT true?
a. Down syndrome is an example of aneuploidy. b. The majority of cases of human sex chromosome abnormalities may never be diagnosed. c. Most embryos with a normal chromosome number miscarry. d. Aneuploidy is usually fatal in humans. e. Aneuploidy typically arises through nondisjunction.
What does Pseudomonas aeruginosa not cause?
What will be an ideal response?
Organisms that require organic sources of carbon and energy are called (chemoheterotrophs/chemoautotrophs/autotrophs)
What will be an ideal response?