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Micro Organism (Virus, Bacteria, Algae, Fungi) MCQ

147 MCQ questions with answers and explanations · page 1 of 6

Test yourself▶ 25 question test▶ 50 question test

Q1. The confirmatory test for HlV virus causing AlDS is :

  1. ACDR count
  2. BWestern blot test
  3. CELISA test
  4. DPCR
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Answer: B) Western blot test

Q2. Microorganisms are seen only with -

  1. AOpen eye
  2. BNaked eye
  3. CMicroscope
  4. DNone
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Answer: C) Microscope

Q3. Virus in bats from Mahabaleshwar Cave ?

  1. ANipah
  2. BEbola
  3. CCovid - 19
  4. DZika
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Answer: A) Nipah

Q4. Viruses are-

  1. AComplete saprophytes
  2. BPartial Parasites
  3. CPartial saprophytes
  4. DTotal parasite
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Answer: D) Total parasite

Q5. The discovery of viruses was made by -

  1. Alwanowski
  2. BBeijerinck
  3. CMiller
  4. DStanley
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Answer: A) lwanowski

Q6. Genetic material of a virus is -

  1. ADNA
  2. BRNA
  3. CEither DNA or RNA
  4. DBoth DNA and RNA
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Answer: C) Either DNA or RNA

Q7. Bacteria was discovered first by -

  1. ALeeuwenhoek
  2. BRobert hook
  3. CLouis Pasteur
  4. DRobert Koch
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Answer: A) Leeuwenhoek

Q8. Xenobiotics which are inherently resistant to microbial attack are called as-

  1. ABiodegradable
  2. BAll of the given options
  3. CRecalcitrant
  4. DPersistent
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Answer: C) Recalcitrant

Q9. Bacteria are grouped under plant because -

  1. AThey can not move
  2. BThey have cell wall
  3. CThey multiple by fission
  4. DThey are found everywhere
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Answer: B) They have cell wall

Q10. The harmful substances produced by microbes are Known as -

  1. AAntibiotics
  2. BPollutants
  3. CHormones
  4. DToxins
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Answer: D) Toxins

Q11. Curd is sour due to presence of -

  1. ACitric Acid
  2. BLactic Acid
  3. CAcetic Acid
  4. DNone
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Answer: B) Lactic Acid

Q12. Smallest form of bacteria is called -

  1. AVibrio
  2. BCocci
  3. CBacilli
  4. DSpirilla
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Answer: B) Cocci

Q13. Which of the following microorganism cause diseases like polio and chicken pox ?

  1. ABacteria
  2. BProtozoa
  3. CAlgale
  4. DVirus
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Answer: D) Virus

Q14. Which of the following statements is / are correct ? 1. Viruses lack enzymes necessary for the generation of energy . 2. Viruses can be cultured in any synthetic medium. 3. Viruses are transmitted from one organism to another by biological vectors only. Select the correct answer using the codes given below-

  1. A1 only
  2. B2 and 3 only
  3. C1 and 3 only
  4. D1, 2 and 3
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Answer: D) 1, 2 and 3

Q15. Which one of the following fungi is commonly known as ' bread mould'?

  1. ASynchytrium
  2. BRhizopus
  3. CAspergillus
  4. DPenicillium
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Answer: C) Aspergillus

Q16. Yeast is an important source of -

  1. AVitamin C
  2. BProtein
  3. CVitamin B
  4. Dlnvertase
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Answer: B) Protein

Q17. Which of the following is absent in bacteria ?

  1. ACell wall
  2. BPlasma membrane
  3. CMitochondria
  4. DRibosome
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Answer: C) Mitochondria

Q18. Type of DNA found in bacteria -

  1. AStraight DNA
  2. BHelical DNA
  3. CCircular DNA
  4. DMembrane bound DNA
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Answer: C) Circular DNA

Q19. Father of microbiology_

  1. ALeeuwenhoek
  2. BLouis Pasteur
  3. CRobert Koch
  4. DHensen
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Answer: C) Robert Koch

Q20. EBOLA is a-

  1. AVirus
  2. BBacteria
  3. CProtozoa
  4. DFundi
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Answer: A) Virus

Q21. Viruses that infect bacteria are called -

  1. ABacteriophages
  2. BBasophils
  3. CBasal body
  4. DBasidiospores
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Answer: A) Bacteriophages

Q22. Bacteria which convert atmospheric nitrogen into nitrogenous compound are called -

  1. ADenitrifying bacteria
  2. BNitrogen fixing bacteria
  3. CNitrifying bacteria
  4. DDecomposing bacteria
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Answer: A) Denitrifying bacteria

Q23. Bacteria which is found in the intestine of human -

  1. AEscherichia coli
  2. BVibrio cholerae
  3. CBacillus antherosis
  4. DCorynebacterium diphtheriae
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Answer: B) Vibrio cholerae

Q24. According to WHO, the official name of the virus responsible for Covid -19 disease is -

  1. ASARS-CoV-2
  2. BCovid-19
  3. CnCovid -19
  4. DCoronavirus
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Answer: A) SARS-CoV-2

Q25. Name of bacteria which cause tuberculosis -

  1. AMycobacterium tuberculosis
  2. BVibrio cholerae
  3. CBacillus coli
  4. DEscherichia coli
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Answer: A) Mycobacterium tuberculosis

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