The appearance of gram-negative bacteria after addition of the mordant in the Gram stain.
a. Purple
b. Red
c. Colorless
d. Brown
Ans: a. Purple
Biology & Microbiology
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The nucleophile of the second step of spliceosome-mediated pre-mRNA splicing is the:
A. 2' hydroxyl of the branch point adenosine. B. 3' hydroxyl of a free guanine nucleotide. C. 3' hydroxyl of the 5' splice site exon. D. 2' hydroxyl of the 3' splice site intron.
Biology & Microbiology
It is not necessary to use a male from a tester strain to genetically map genes on the X chromosome. How can this be done and why does it work?
What will be an ideal response?
Biology & Microbiology
A decreased efficacy of an antimicrobial agent during combination therapy is called
A) antagonism B) cross-resistance C) synergism D) second-line
Biology & Microbiology
The loss of water from the leaves of plants is
A) adhesion. B) cohesion. C) transpiration. D) osmosis.
Biology & Microbiology