Microbiology MCQs Mock Test - Chapter 73

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Explore Chapter 73 with our Microbiology MCQs Mock Test! Each question is accompanied by detailed explanations to ensure a thorough understanding of key concepts. This comprehensive collection of multiple-choice questions is crafted to enhance your knowledge and confidence in the captivating field of microbiology.

Return to Chapter 73 for Explanations

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Microbiology MCQs Chapter 73

Chapter 73 with our Microbiology MCQs and explanations! Test your knowledge and understanding of key concepts with our complete set of multiple choice questions with detailed explanations for each answer. Increase your confidence and understanding of the fascinating world of microorganisms!

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1 / 50

Category: Microbiology

Causative organism of whooping cough is

None of these

Bordetella bronchi septica

Bordetella pertussis

Bordetella parapertussis

2 / 50

Category: Microbiology

Erythromycin inhibits protein synthesis by

Attaching to 30 S ribosome unit

By the attachment to m-RNA

Attaching to 50 S unit or ribosome

By the attachment to t-RNA

3 / 50

Category: Microbiology

The best medium for the production of Penicillin is

Sulfite waste liquor

Nutrient agar

Whey

Corn steep liquor

4 / 50

Category: Microbiology

The antibacterial action of penicillin is due to its effect on

Protein synthesis

Cell wall synthesis

Cell membrane permeability

DNA synthesis

5 / 50

Category: Microbiology

V itam in B12 can be estimated and determined by using organism

Lactobacillus Leichmanni

Lactobacillus sps

E.Coli

Bacillus subtilis

6 / 50

Category: Microbiology

Clostridium acetobutylicum is used for the production of

Ethanol

Acetone – Butanol

None of these

Vitamin-B12

7 / 50

Category: Microbiology

The antibiotic produced from Bacillus subtilis is

Both a and b

None of these

Bactiracin

Vancomycin

8 / 50

Category: Microbiology

Biological false reaction in VDRL is related to

None of these

Corynebacterium diphtheria

Lepra bacilli

Cl.welchi

9 / 50

Category: Microbiology

To differentiate lactose and non-lactose fermentors the medium used is

Sugar medium

Mac Conkey’s medium

Citrate medium

Stuart’s medium

10 / 50

Category: Microbiology

Bacitracin is obtained from

d. anthracoid

B. anthracis

B. cereus

B. subtilis

11 / 50

Category: Microbiology

Main causative organism of gas gangrene is

B.anthrax

Cl.perfringens

Clostridium tetani

Cl.deficile

12 / 50

Category: Microbiology

E.coli produce which type of toxins?

Exotoxins

Endotoxins

Both Exotoxins and Endotoxins

Leucocidin

13 / 50

Category: Microbiology

Salmonella which can cause prolong septicaemia.

Salmonella typhimurium

Salmonella entritidis

Salmonella anetum

Salmonella cholerasuis

14 / 50

Category: Microbiology

The effect of antibiotics on micro organisms is mainly due to

Damage to the cytoplasmic membrane

Inhibition of cell-wall synthesis

All of the above

Inhibition of nucleic acid and protein synthesis

15 / 50

Category: Microbiology

The penicillin produced in large scale submerged fermentations are

Penicillin-D

Penicillin-G

Penicillin-A

None of these

16 / 50

Category: Microbiology

Resistant to drugs in tuberculosis develops by

Transduction

Mutation

Conjugation

Transformation

17 / 50

Category: Microbiology

Pfeiffer phenomenon is related to

B.anthrax

Rickettsial pox

Vibrio cholerae

All of these

18 / 50

Category: Microbiology

The best test for the susceptibility of a microorganism to antibiotics and other chemotherapeutic agents:

Paper-disc test

Both a and b

None of these

Tube-dilution test

19 / 50

Category: Microbiology

Which of the following involves the formation of nitrate from ammonia

Nitrogen fixation

Nitrification

Ammonification

Denitrification

20 / 50

Category: Microbiology

Diagnostic test for the identification of primary syphilis:

Kahn’s test

Treponema pallidum immobilization test

VDRL test

Dark ground microscopic examination

21 / 50

Category: Microbiology

Bacterial resistance to antibiotics is transmitted by

Transduction

Plasmids

Transformation

Mutation

22 / 50

Category: Microbiology

For streptomycin production the microorganisms required are

All of these

Streptomyces griseus

Saccharomyces cereviceae

Streptomyces niger

23 / 50

Category: Microbiology

Protoplasts can be prepared from

Both a & b

None of these

Gram positive bacteria

Gram negative bacteria

24 / 50

Category: Microbiology

If the microorganisms are allowed to nutrient medium is called

Submerged fermentation

Dual fermentation

Surface fermentation

All of these

25 / 50

Category: Microbiology

Which of the following does not inhibit cell wall synthesis?

Carbenicillin

Penicillin

Vancomycin

Amikacin

26 / 50

Category: Microbiology

In the production of ethanol industrially the yeast used is

S. cerevisiae

Kluyreromyces fragilis

K.pneumoniae

Both b and c

27 / 50

Category: Microbiology

Aspergillus niger is used generally for the production of

Penicillin

Lactic acid

Citric acid

Ethanol

28 / 50

Category: Microbiology

bacitracin sensitivity test is done for

Pneunocci

Staphylococci

Group ‘A’ Streptococci

Gonococci

29 / 50

Category: Microbiology

Microorganisms used for alcohol production

Penicillium chrysogenum

None of these

Bacillus subtilis

Saccharomyces sereviceae

30 / 50

Category: Microbiology

Vancomycin is obtained from

Streptococcus species

Bacillus anthracis

Aspergillus niger

Streptomyces orientalis

31 / 50

Category: Microbiology

The micro-organism useful for fermentation are

Bacteria

All of the above

Fungi

Yeast

32 / 50

Category: Microbiology

For amy lase product ion the m icroorganism required is

S. cereviceae

B. subtilis

None of these

A. nigar

33 / 50

Category: Microbiology

L. lysine is produced from

Coryne bacterium glutamicum

Mycobacterium sps

Corynebacterium sps.

None of these

34 / 50

Category: Microbiology

Different methods of strain improvement are

All of these

Genetic recombination

Recombinant DNA technique

Protoplast fusion

35 / 50

Category: Microbiology

Industrial Production of Vitamin-B12 is from

Both a and b

Pseudomonas sps.

Propionibacterium sps.

None of these

36 / 50

Category: Microbiology

Sporadic summer diarrhea may be caused by

Serratia

E.coli

Enterobacter

Hafnia

37 / 50

Category: Microbiology

Which agent on addition to a colony inhibits its growth and on removal the colony regrows is?

Bacteriostatic

Antibiotic

Antiseptic

Bactericidal

38 / 50

Category: Microbiology

The pyruvate, dehydrogenase ??? multi enzyme complex does not occur in

Aerobic bacteria

Microphilic bacteria

Strictly anaerobic bacteria

Facultative anaerobic bacteria

39 / 50

Category: Microbiology

Nalidixic acid activity is due to

The inhibition of DNA synthesis

Inhibition of protein synthesis

Both b and c

The inhibition of cell wall synthesis

40 / 50

Category: Microbiology

Industrially important Antibiotic producing organisms shall be isolated by

Crowded plate method

Serial dilution method

Direct plate method

Disk plate method

41 / 50

Category: Microbiology

Streptokinase is produced by

Str. pyogenes

Streptococcus pneumoniae

Staphylococcus aureus

Str. faecalis

42 / 50

Category: Microbiology

The smallest amount of chemotherapeutic agents required to inhibit the growth of the organism in Vitro is known as?

None of these

Death rate

Thermal death point (TDP)

MIC (minimum inhibitory concentration)

43 / 50

Category: Microbiology

Cellulose are produced from

None of these

Trichoderma Koningi

S.cereviceae

A. nigar

44 / 50

Category: Microbiology

In Tuberculosis therapy mainly used antibiotic is

Cycloserine

Chloramphenol

Penicillin

Streptomycin

45 / 50

Category: Microbiology

Batch fermentation is also called?

Open system

Closed system

Sub-merger system

Fed-Batch system

46 / 50

Category: Microbiology

Clear-zones formation around antibiotic disc is due to

Lysis of the bacterial cells surrounding the disc

Growth of the bacterium surrounding of the disc

None of these

The destruction of paper disc (antibiotic)

47 / 50

Category: Microbiology

Diphtheria toxins are produced from the strains of C.diphtheriae, which are

Of the mitis and strain

Lysogenic for ß prophase

Encapsulated

Sucrose fermentors

48 / 50

Category: Microbiology

The antibiotic acting on cell wall is

Cyclosporin

Bacitracin

All of the above

Penicillin

49 / 50

Category: Microbiology

Skin of the healthy person has normal microbial flora which includes

Nonhemolytic staphylococci

Enterobacteriaceae

Aerobicdiphtheria bacilli

All of these

50 / 50

Category: Microbiology

A major ingradient of penicillin production media is

Corn meal

Cane steep liquor

None of these

Corn steep liquor

Your score is

Return to Chapter 73 for Explanations

The questions are crafted to assess essential technical skills and knowledge required in the laboratory profession, focusing on tasks such as interpreting lab test results, performing various laboratory procedures, and effectively maintaining lab equipment.

To prepare for these multiple-choice questions (MCQs), candidates should have a strong grasp of fundamental laboratory science concepts and principles. Familiarity with common laboratory equipment, procedures, and safety protocols is crucial for success.

Candidates can greatly benefit from studying specific laboratory science textbooks or taking online courses that cover the relevant MCQ material. Additionally, practicing with sample MCQs and reviewing the answers can help candidates pinpoint areas where they need to enhance their knowledge or skills.

Overall, the MCQs for lab technologists are comprehensive and challenging, demanding a high level of proficiency in laboratory science from candidates.

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