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

Biology & Microbiology

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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

Biology & Microbiology

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

Biology & Microbiology

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

Biology & Microbiology

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.

Biology & Microbiology