Methods in Microbiology [GATE (Graduate Aptitude Test in Engineering) Microbiology]: Questions 5 - 8 of 18

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Question 5

Methods in Microbiology

Appeared in Year: 2016

Question

MCQ▾

Biofilm produced by bacteria is detected by

Choices

Choice (4)Response

a.

Basic fuchsin

b.

Saffranin

c.

Congo red

d.

Both c. and b. are correct

Question 6

Methods in Microbiology
Edit

Appeared in Year: 2020

Question

Numeric Answer▾

A continuous bacterial culture carried out in a chemostat is set to a flow rate of 40ml/hr. the culture volume is equivalent to that of a cubical container having 10cm sides. The dilution rate (in per hour, rounded off to two decimal places) of this system is ________.

Question 7

Methods in Microbiology

Appeared in Year: 2017

Question

Numeric Answer▾

The transformation efficiency of competent cells prepared in a laboratory is of plasmid DNA. If of this plasmid is used to transform these competent cells, the number of transformed bacteria in CFU after plating will be ________.

Question 8

Methods in Microbiology

Appeared in Year: 2020

Question

MCQ▾

Which one of the following will increase the resolution of a light microscope?

Choices

Choice (4)Response

a.

increasing the wavelength of light

b.

using a medium of higher refractive index

c.

decreasing the numerical aperture of the objective lens

d.

using an objective lens with a longer working distance

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