Which of the following is the primary source of energy for chemoautotrophs?
a. inorganic molecules
b. living organisms
c. previously living organisms
d. sunlight
a. inorganic molecules
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In phage ?, the relative affinities of the lambda repressor and the cro protein to the three binding sites in the OR region are:
A. the same. B. inversely proportional C. unrelated.
Chromosome number for a species is 34. When a cell divides by mitosis, the daughter cells have how many
chromosomes? a. 17 b. 34 c. 51 d. 68 e. 119
Which of the following microorganisms use M protein to avoid destruction of a phagocyte?
a. Coxiella burnetii b. Streptococcus pyogenes c. Streptococcus pneumoniae d. Haemophilus influenzae
Determining microbial sensitivity to an antimicrobial agent by using a filter paper soaked with the drug on a bacterial lawn on an agar plate is called:
A) dilution method B) disk diffusion method C) automated testing D) phage typing