GATE (Graduate Aptitude Test in Engineering) Microbiology: Questions 21 - 25 of 125

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Question 21

Appeared in Year: 2017

Question

MCQ▾

a bactericidal agent X is added after 3 hours of growth of a bacterial culture. Following the addition of X, the bacterial growth was measured using the standard plate count method till 24 hours. Which one of the following figures is the most accurate representation of the action of X?

Number of Bacterial Cells

Choices

Choice (4)Response

a.

i

b.

ii

c.

iii

d.

iv

Question 22

Appeared in Year: 2015

Question

MCQ▾

Of the following, the most effective method to kill bacterial endospores is

Choices

Choice (4)Response

a.

UV irradiation

b.

Filtration

c.

Moist heat sterilization

d.

Pasteurization

Question 23

Appeared in Year: 2016

Question

MCQ▾

The precursor for the synthesis of aromatic amino acids is

Choices

Choice (4)Response

a.

oxaloacetate

b.

phosphoenolpyruvate

c.

α-ketoglutarate

d.

pyruvate

Question 24

Appeared in Year: 2016

Question

MCQ▾

Which one of the following is the most appropriate technique to determine the relatedness of two bacterial species?

Choices

Choice (4)Response

a.

Doubling time measurement

b.

Biochemical characterization

c.

DNA hybridization

d.

Plasmid profiling

Question 25

Appeared in Year: 2017

Question

MCQ▾

The internal mitochondrial membrane comprises of a series of folds known as

Choices

Choice (4)Response

a.

crista

b.

cilia

c.

cisterns

d.

thylakoid

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