Microbial Growth [GATE (Graduate Aptitude Test in Engineering) Microbiology]: Questions 5 - 8 of 12

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Question 5

Microbial Growth

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)

Question 6

Microbial Growth
Edit

Appeared in Year: 2019

Question

Numeric Answer▾

A bacterial culture contains 500 organisms/mL in the exponential growth phase at 8 am in the morning. If you consider a generation time of 20 minutes, the total number of organisms/mL (round off to the nearest integer) after three hours (i.e.. at 11 am in the morning) will be ________.

Question 7

Microbial Growth

Appeared in Year: 2016

Question

Numeric Answer▾

The growth profile of E. coli on glucose plus lactose is shown below. The specific growth rate of the second exponential phase is________h-1.

In the Graph, the Exponential Growth

Question 8

Microbial Growth

Appeared in Year: 2020

Question

MCQ▾

an example of a differential and selective medium in which colonies of gram-negative bacteria produce large amounts of acidic products and appear green with a metallic sheen is

Choices

Choice (4)Response

a.

EMB agar

b.

blood agar

c.

mannitol salt agar

d.

MacConkey agar

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