GATE (Graduate Aptitude Test in Engineering) Microbiology: Questions 101 - 104 of 125

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Question 101

Appeared in Year: 2015

Question

Numeric Answer▾

The volume (in ml) of a stock solution of ampicillin to be added to 0.1 liter of growth medium for achieving a final ampicillin concentration of is ________

Question 102

Appeared in Year: 2015

Question

MCQ▾

Lophotrichous bacteria have

Choices

Choice (4)Response

a.

a single flagellum at each pole

b.

a cluster of flagella at one or both ends

c.

one flagellum

d.

flagella that are spread evenly over the whole surface

Question 103

Appeared in Year: 2020

Question

Match List-Ⅰ List-Ⅱ▾

Match the process involved in nitrogen or sulfur cycle in group I with the corresponding microbe in group II.

List-Ⅰ (Column-I)List-Ⅱ (Column-II)
(A)

Nitrogen fixation by a symbiotic microbe

(i)

Azotobacter

(B)

Oxidation of to sulfur

(ii)

Pseudomonas

(C)

Nitrogen fixation by free-living microbe

(iii)

Rhizobium

(D)

Denitrification

(iv)

Beggiatoa

Choices

Choice (4)Response
  • (A)
  • (B)
  • (C)
  • (D)

a.

  • (ii)
  • (iii)
  • (i)
  • (iv)

b.

  • (ii)
  • (i)
  • (iv)
  • (iii)

c.

  • (iii)
  • (iv)
  • (i)
  • (ii)

d.

  • (iii)
  • (i)
  • (ii)
  • (iv)

Question 104

Edit

Appeared in Year: 2020

Question

Numeric Answer▾

A 100µl aliquot (10 - 4) dilution of the bacterial culture plated on the nutrient agar gave 4 colonies. The bacterial stock concentration (in million cell/ml, rounded off to one decimal place) is________.

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