30+ Gk MCQs about Micro Organism

Here are 30+ Gk MCQs about Micro Organism:

Q.1 Who is known as Father of Microbiology?

A) Antonie van Leeuwenhoek

B) Robert Koch

C) Edwin Jenner

D) Louis Pasteur

Answer: A) Antonie van Leeuwenhoek

Q.2 Which of the following is confirmatory test for HIV virus causing AIDS?

A) CDR count

B) ELISA test

C) C. T. Scan

D) Pap Smears Test

Answer: B) ELISA test

Q.3 Which is the largest unicellular green algae?

A) Yeast

C) Acetobacter

B) Acetabularia

D) Amoeba

Answer: B) Acetabularia

Q.4 Which one of the following is a living fossil of plant?

A) Ginkgo

B) Pinus

C) Mirabilius

D) Dalbergia

Answer: A) Ginkgo

Q.5 The harmful substances produced by microbes are known as?

A) Antibiotics

B) Pollutants

C) Hormones

D) Toxins

Answer: D) Toxins

Q.6 The taste of Curd is sour due to presence of which acid?

A) Citric Acid

C) Acetic Acid

C) Formic Acid

B) Lactic Acid

Answer: B) Lactic Acid

Q.7 Which of the following microorganism cause diseases like polio and chicken pox?

A) Bacteria

B) Protozoa

C) Algale

D) Virus

Answer: D) Virus

Q.8 Which one of the following fungi is known as ‘Bread Mould’?

A) Synchytrium

C) Aspergillus

B) Rhizopus

D) Penicillium

Answer: B) Rhizopus

Q.9 Yeast is an important source of which vitamin?

A) Vitamin C

B) Vitamin A

C) Vitamin B

D) Vitamin K

Answer: C) Vitamin B

Q.10 Which of the following is absent in bacteria?

A) Cell Wall

C) Mitochondria

B) Plasma Membrane

D) Ribosome

Answer: C) Mitochondria

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50+ Basic Gk MCQs about Biology: https://testyourgk.in/50-basic-gk-mcqs-about-biology/

Q.11 In the plant kingdom, ‘Ferns and Fern Allies’ belong to which group?

A) Gymnosperms

B) Thallophyta

C) Bryophyta

D) Pteridophyta

Answer: D) Pteridophyta

Q.12 Viruses that infect bacteria are called?

A) Bacteriophages

B) Basophils

C) Basal Body

D) Basidiospores

Answer: A) Bacteriophages

Q.13 Which bacteria convert atmospheric nitrogen into nitrogenous compound?

A) Denitrifying bacteria

B) Nitrogen fixing bacteria

C) Nitrifying bacteria

D) Decomposing bacteria

Answer: B) Nitrogen fixing bacteria

Q.14 Which type of bacteria is found in the human intestine?

A) Escherichia coli

B) Vibrio cholerae

C) Bacillus antherosis

D) Corynebacterium diphtheriae

Answer: A) Escherichia coli

Q.15 What is the causal organism of Polio?

A) Virus

B) Bacteria

C) Protozoa

D) Fungi

Answer: A) Virus

Q.16 Name of bacteria which cause tuberculosis?

A) Mycobacterium tuberculosis

B) Vibrio cholrae

C) Bacillus coli

D) Escherichia coli

Answer: A) Mycobacterium tuberculosis

Q.17 Which one of the following is commonly known as pond silk?

A) Spirogyra

B) Rhizopus

C) Yeast

D) Ulothirx

Answer: A) Spirogyra

Q.18 Which of the following type of microorganism is most widely used in industries?

A) Bacteria

B) Bacteria and Fungi

C) Bacteria and Algae

D) Bacteria, Microalgae and Fungi

Answer: D) Bacteria, Microalgae and Fungi

Q.19 What is mushroom?

A) Fungus

C) Animal

B) Plant

D) Bacteria

Answer: A) Fungus

Q.20 Which is the most extensive use of molasses after fermentation is for producing?

A) Methanol

B) Sugar

C) Ethanol

D) Sugarcane

Answer: C) Ethanol

Q.21 Nitrogen fixing bacteria is useful in growing which crop?

A) Wheat

B) Paddy

C) Legume

D) Maiz

Answer: C) Legume

Q.22 Which of the following is used as bio-fertilizer?

A) Colastrium

B) Urea

C) Azolle

D) Baggase

Answer: C) Azolle

Q.23 Which one of the following diseases caused by bacteria?

A) Tuberculosis

B) Mumps

C) Small pox

D) Rabies

Answer: A) Tuberculosis

Q.24 Which is the smallest prokaryotic organism?

A) Chlorella

B) Bacteria

C) Microcystis

d) Mycoplasma

Answer: d) Mycoplasma

Q.25 Fungi which grow in cow dung are called?

A) Corticoles

B) Saxcoles

C) Coprophilous

D) Zoophilous

Answer: C) Coprophilous

Q.26 The water of holy Ganga River is pure due to presence?

A) Cyanophages

B) Hydrophytes

C) Bacteria

D) Bacteriophages

Answer: D) Bacteriophages

Q.27 The food material in fungi is stored in the form of what?

A) Starch

B) Glycogen

C) Glucose

D) Sucrose

Answer: B) Glycogen

Q.28 Viruses are parasitic, having DNA/RNA but crystallized and lack respiration. Thus, they are treated as?

A) Living materials

B) Non-living materials

C) Both living and Non-living materials

D) Cellulose

Answer: B) Non-living materials

Q.29 Red color of red sea is due to the presence of?

A) Moss

B) Algae

C) Fungi

D) Bacteria

Answer: B) Algae

Q.30 Which of the following symbiotic associations forms a lichen?

A) Algae and Fungus

B) Algae, Bryophyte and Fungus

C) Bacterium

D) Bacterium and Gymnosperm

Answer: A) Algae and Fungus

Q.31 Foot and Mouth disease in animal is caused by?

A) Bacteria

B) Virus

C) Fungi

D) Algae

Answer: B) Virus

Q.32 Mosaic disease of tobacco is caused due to the presence of which micro-organism?

A) Virus

B) Bacteria

C) Fungi

D) Algae

Answer: a) Virus

Q.33 Amoeba acquires its food through the proceed of?

A) Endocytosis

B) Plasmolysis

C) Exocytosis and Endocytosis

D) Exocytosis

Answer: A) Endocytosis

Q.34 Which one of the symbiotic algae is found in secretory cell of hydra?

A) Zoochlorella

C) Ulothrix

B) Nostac

D) Spirogyra

Answer: A) Zoochlorella

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