Online Microbiology Test - Microbiology Test 10

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!

Eukaryotic cell organelles first emerged

from a specialized lineage of cells within the kingdom Protista

when prokaryotes engulfed each other and became interdependent

when bacteria made their first attempts at reproduction

just before the origin of the animal and fungal kingdoms

[#]

Which of the following is not true for prokaryotic organism?

Nucleus is not bounded by nuclear membrane

Chromosomes does not contain histones

80S ribosomes are distributed in cytoplasm

Cell wall contains peptidoglycan as one of the major component

[#]

Phosphate regulation has been observed in the production of

alkaloids

antibiotics

gibberelins

all of these

[#]

Which of the following defines an open reading frame (ORF)?

A sequence of genome in bacteriophage

The sequence of a complete genome

A plasmid vector used in genome sequencing

A possible gene predicted by DNA sequencing

[#]

Macrophages are professional antigen- presenting cells. The protein molecule through which they present antigen in human is

actin

interleukin

HLA

CD8

[#]

Which of the following property(ies) is/are seen in the members of family Enterobacteriaceae?

They are catalase-positive

They are oxidase-negative

They ferment glucose

They reduce nitrates to nitrites

[#]

Acute diarrhoeal disease resembling cholera can be caused due to

Aeromonas hydrophila

Vibrio vulnificus

V. alginolyticus

All of these

[#]

An organism in the Deuteromycota has all the following except

asexual spores

absorptive nutrition

ascospores, basidiospores or zygospores

a nucleus

[#]

Usually viruses are separated into several large groups based primarily on

nature of the host

nucleic acid characteristics

capsid symmetry

diameter of the viroin or nucleocapsid

[#]

10.

One of the first enzymes synthesized by many bacteriophage is __________ , an RNA-dependent RNA polymerase.

RNA transcriptase

RNA polymerase

RNA ligase

RNA replicase

[#]

11.

The tissue structure deteriorates as the virus multiplies. This deterioration is called

aneuploidy

protopathic effect

cytopathic effect

none of these

[#]

12.

Which of the following viral infections is associated with the development of hydrophobia?

Rabies

Influenza

Polio

Hepatitis

[#]

13.

Which of the following is not an aminoglycoside antibiotic?

Streptomycin

Neomycin

Kanamycin

Cephalosporin

[#]

14.

Bacteria, as a group, are responsible for

nitrogen oxidation

sulfur oxidation

nitrogen fixation

all of these

[#]

15.

The organisms responsible for the characteristic musty or earth odor of a freshly plowed field is/are

Nocardia

Streptomyces

Micromonospora

all of these

[#]

16.

The elimination of the scum of yeasts in the brine during the fermentation include

agitation of the surface

addition of the mustard oil

addition of the sorbic acid

all of these

[#]

17.

The butyric acid type of fermentation in acid or medium acid foods, with swelling of the container by the carbon dioxide and hydrogen gas is caused by

C. butyricum

C. pasteurianum

both (a) and (b)

C. sporogenes

[#]

18.

The agent responsible for causing mad cow disease is thought to be a

fungus

protozoan

prion

virus

[#]

19.

Amyloglucosidase is used in glucose production. It is produced by

Rhizopus niveus

Endomycopsis fibuliger

Sclerotina libertina

both (a) and (b)

[#]

20.

Virus reproduces in living cells by

replication

duplication

multiplication

all of these

[#]

Quick links

Quantitative Aptitude

Verbal (English)

Reasoning

Programming

Interview

Placement Papers

Online Microbiology Test - Microbiology Test 10

Marks : 2/20

Test Review : View answers and explanation for this test.

Current Affairs

Interview Questions

Group Discussions