GATE (Graduate Aptitude Test in Engineering) Microbiology: Questions 44 - 48 of 125

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Question 44

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

Question 45

Edit

Appeared in Year: 2015

Question

Numeric Answer▾

The doubling time (in minutes) of a bacterium with a specific growth rate of 2.3 h-1 in 500 ml of growth medium is ________

Question 46

Appeared in Year: 2020

Question

MCQ▾

Digestion of an immunoglobulin G molecule with pepsin will not

Choices

Choice (4)Response

a.

cleave the heavy chain of IgG molecule

b.

generate a bivalent antigen binding fragment

c.

generate monovalent antigen binding fragments

d.

destroy the complement binding site

Question 47

Appeared in Year: 2016

Question

MCQ▾

Nitrogenase reduces N2 to NH3. Metal co-factors required for this activity are ________.

Choices

Choice (4)Response

a.

Mo & Fe

b.

Fe & Cu

c.

Cu & Mn

d.

Mo & Mn

Question 48

Appeared in Year: 2015

Question

MCQ▾

Which combination of profiles in the following figure accurately represents the transport rate of glycerol and oxygen into E. coli cells as a function of their extracellular concentration?

Rate of Transport

Choices

Choice (4)Response

a.

glycerol- (i) and oxygen- (ii)

b.

glycerol- (ii) and oxygen- (iii)

c.

glycerol- (ii) and oxygen- (i)

d.

glycerol- (iii) and oxygen- (i)

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