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Tamil Nadu State Board · CLASS 12th · Microbiology

TAMIL NADU STATE BOARD CLASS 12 MICROBIOLOGY 2023

44 questions from this CLASS 12th Microbiology paper. Log in as a CLASS 12th student to view solutions.

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Q1 mcq 1 mark
__________ is an example for optical imaging technique.
  • A. CLSM
  • B. LCSM
  • C. Both (a) and (b)
  • D. TEM

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Q2 mcq 1 mark
Match the following : (1)SEM (i)2 dimensional image (2)TEM (ii)Unstained living cell (3)Fluorescence microscope (iii)3 dimensional image (4)PCM (iv)Mycobacterium tuberculosis
  • A. (1)-(i), (2)-(iii), (3)-(iv), (4)-(ii)
  • B. (1)-(i), (2)-(ii), (3)-(iv), (4)-(iii)
  • C. (1)-(iii), (2)-(i), (3)-(iv), (4)-(ii)
  • D. (1)-(iii), (2)-(ii), (3)-(iv), (4)-(i)

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Q3 mcq 1 mark
Thermometers are disinfected by immersing in __________ for 10 to 20 minutes.
  • A. Iodine
  • B. Alcohol
  • C. Mercury
  • D. Chloride

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Q4 mcq 1 mark
Which among the following agent is used as a preservative in ophthalmic solution ?
  • A. Quaternary ammonium salt
  • B. Phenol
  • C. Ethylene Oxide
  • D. Aldehydes

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Q5 mcq 1 mark
Which one of the following is correct ?
  • A. Apoenzyme + Holoenzyme = Coenzyme
  • B. Apoenzyme + Cofactor = Holoenzyme
  • C. Holoenzyme + Coenzyme = Apoenzyme
  • D. Coenzyme + Cofactor = Holoenzyme

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Q6 mcq 1 mark
Milk contains about ___________ of casein protein.
  • A. 50 - 100%
  • B. 90 - 95%
  • C. 60 - 65%
  • D. 80 - 85%

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Q7 mcq 1 mark
__________ method is used for preservation of sporulating micro-organisms.
  • A. Drying
  • B. Desiccation
  • C. Liquid Nitrogen
  • D. Agar slopes

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Q8 mcq 1 mark
The bacteria which causes cerebrospinal fever __________.
  • A. Salmonella typhi
  • B. Neisseria meningitides
  • C. Corynebacterium diphtheriae
  • D. Vibrio cholerae

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Q9 mcq 1 mark
The father of Medical Mycology is :
  • A. Joseph Lister
  • B. Louis Pasteur
  • C. Robert Koch
  • D. Raymond Jacques Sabouraud

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Q10 mcq 1 mark
Diaper rash is caused by the Fungi __________.
  • A. Penicillium notatum
  • B. Cryptococcus neoformans
  • C. Candida albicans
  • D. Histoplasma capsulatum

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Q11 mcq 1 mark
A host in which a parasite undergoes sexual reproduction is __________.
  • A. Transport Host
  • B. Definite Host
  • C. Reservoir Host
  • D. Intermediate Host

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Q12 mcq 1 mark
In India, Visceral Leishmaniasis is called as __________.
  • A. Kala-Azar
  • B. Asian fever
  • C. Dum-Dum fever
  • D. All of the above

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Q13 mcq 1 mark
Assertion (A) :Cytomegalo virus is classified as Beta Herpes virus. Reason (R) :Beta

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Q13 mcq
Assertion (A) :Cytomegalo virus is classified as Beta Herpes virus. Reason (R) :Beta Herpes virus have short replicative cycle and variable host range.
  • A. Assertion (A) is true and Reason (R) explains assertion (A)
  • B. Assertion (A) is true, Reason (R) is false
  • C. Both Assertion (A) and Reason (R) are false
  • D. Assertion (A) is false, Reason (R) is true

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Q14 mcq
The principal start codon AUG, specifies the amino acid :
  • A. Methionine
  • B. Arginine
  • C. Isoleucine
  • D. Valine

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Q15 mcq
In type II hypersensitivity reaction __________ is involved.
  • A. IgM
  • B. IgG
  • C. IgE
  • D. IgG and IgM

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Q16 short answer
Write any four applications of Nanoparticles.

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Q17 short answer
What are the different types of Electron microscope ?

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Q18 short answer
Define Antibiotic. Give any two examples.

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Q19 short answer
Define Glycolysis.

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Q20 short answer
What is meant by semi-synthetic penicillin ? Give an example.

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Q21 short answer
What is Enteric fever ?

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Q22 short answer
What are the clinical features of Amoebic dysentry ?

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Q23 short answer
Define Dane Particle.

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Q24 short answer
State the two popular enzymes, employed in the PCR technique.

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Q25 short answer
What are the different types of filters used in Fluorescence microscope ?

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Q26 short answer
Write the differences between Anabolism and Catabolism.

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Q27 short answer
What are the advantages and disadvantages of Food Preservation ?

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Q28 short answer
Define primary screening with example.

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Q29 short answer
Define Chancre.

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Q30 short answer
What is meant by Direct and Indirect life cycle ? Give an example.

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Q31 short answer
What are the symptoms of Dengue Hemorrhagic fever ?

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Q32 short answer
What is meant by Transplantation ? List the methods of Transplantation.

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Q33 short answer
What is Fungal Dimorphism ? Give an example.

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Q35 long answer
Explain the working mechanism of Phase Contrast Microscope with a neat diagram.

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Q36 long answer
Explain antibiotic sensitivity test through Kirby-Bauer Disc Diffusion method.

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Q37 long answer
Explain TCA cycle.

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Q38 long answer
Classify Food poisoning.

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Q39 long answer
Explain the steps involved in Citric Acid Production.

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Q40 long answer
Explain the mode of action of Cholera toxin.

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Q41 long answer
Explain the life cycle of Ascaris lumbricoides.

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Q42 long answer
Explain the structure of Rabies Virus.

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Q43 long answer
What are the differences between Immediate and Delayed Type hypersensitivity reaction.

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Q44 long answer
Explain Ames test.

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