Online Microbiology Test - Microbiology Test 6

Instruction:

This is a FREE online test. Beware of scammers who ask for money to attend this test.
Total number of questions: 20.
Time allotted: 30 minutes.
Each question carries 1 mark; there are no negative marks.
DO NOT refresh the page.
All the best!

Which of the following is considered the most unifying concept in biology?

Taxonomy

Anatomy

Genetics

Evolution

[#]

A characteristic of protein synthesis in both the archaea and eukarya is

transcription and translation are coupled

translation is inhibited by diphtheria toxin

proteins are synthesized from D-, rather than L-, isomers of amino acids

the initiator tRNA is charged with N-formyl-methionine

[#]

Which is most likely to be exposed on the surface of a gram-negative bacterium?

Pore protein (porin)

Protein involved in energy generation

Lipoteichoic acid

Phospholipids

[#]

The cell reproduction in bacteria may occur by

binary fission

budding

fragmentation

all of these

[#]

Incorporation of atmospheric N₂to NH₄⁺ occurs via the process of

assimilatory nitrate reduction

transamination

deamination

nitrogen fixation

[#]

Which of the following nucleoside diphosphates is used most often in carbohydrate anabolism?

Uridine diphosphate

Adenosine diphosphate

Guanine diphosphate

Thymine diphosphate

[#]

In DNA sequencing, the primer

specifies where the sequence ends

specifies where the sequence begins

both (a) and (b)

generates variety of different sized fragments

[#]

Which phage always carries a small piece of E.coli genome?

Lambda

[#]

The promoter on an expression vector used to overproduce proteins in bacteria is

a bacterial promoter

expressed both in bacteria and mammalian cells

not a regulated promoter

the natural promoter of the gene being cloned

[#]

10.

Who discovered transposons (jumping genes)?

Abelson

Harvey

McClintock

Griffith

[#]

11.

Penicillin resistance in staphylococci is acquired due to

conjugation

mutation

transformation

transduction

[#]

12.

McFadyean's reaction is employed for the presumptive diagnosis of

anthrax

tetanus

typhoid

all of these

[#]

13.

Which of the following species of Clostridium is predominantly sacchrolytic?

C septicum

C perfringens

C novyi

All of these

[#]

14.

Humans become infected with Mycobacterium tuberculosis most frequently by

inhalation

ingestion

contact

inoculation

[#]

15.

The virus(es) which can cause aseptic meningitis is/are

Polioviruses

Coxsackieviruses

Echo viruses

All of these

[#]

16.

Which of the following material is sterilized by heating at 160°C in a hot air oven for one hour?

Swab sticks

All-glass syringes

Oils and jellies

All of these

[#]

17.

The acetate-utilizing methanogens are responsible for

20% of methane produced in a biogas reactor

50% of methane produced in a biogas reactor

70% of methane produced in a biogas reactor

85% of methane produced in a biogas reactor

[#]

18.

Which of the following microorganism produces only L(+) - lactic acid without further racemization ?

Leuconostoc mesenteroides

Lactobacillus delbrueckii

Rhizopus oryzae

Lactobacillus bulgaricus

[#]

19.

Protease, which is used for flavouring of sake and haze removal in sake is produced by

A. oryzae

A. flavus

B. cereus

A. niger

[#]

20.

Which of the following disease is not caused by microbial protein toxin?

Botulism

Diphtheria

Shigella dysentery

Tuberculosis

[#]

Quick links

Quantitative Aptitude

Verbal (English)

Reasoning

Programming

Interview

Placement Papers

Online Microbiology Test - Microbiology Test 6

Marks : 2/20

Test Review : View answers and explanation for this test.

Current Affairs

Interview Questions

Group Discussions