wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

MCQ Microbiology

Total questions: 120

Worksheet time: 2hrs 0mins

Name
Class
Date
1.

What is bacteria ?

a)
Bacteria are single-celled microorganisms.
b)
Bacteria are multicellular organisms.
c)
Bacteria are plants.
d)
Bacteria are not living organisms.
2.

What is a virus?

a)

Viruses are single-celled microorganisms.

b)

Viruses are multicellular organisms.

c)

Viruses are not living organisms.

d)

Viruses are plants.

3.

What is the function of mitochondria?

a)

Mitochondria are responsible for photosynthesis.

b)

Mitochondria are the powerhouse of the cell.

c)

Mitochondria help in cell division.

d)

Mitochondria store water in the cell.

4.

What is the function of ribosomes?

a)

Ribosomes are responsible for photosynthesis.

b)

Ribosomes are the powerhouse of the cell.

c)

Ribosomes help in protein synthesis.

d)

Ribosomes store water in the cell.

5.

What is a fungus?

a)

Fungi are single-celled microorganisms.

b)

Fungi are multicellular organisms.

c)

Fungi are not living organisms.

d)

Fungi are plants.

6.

What is the role of vacuoles in cells?

a)

Vacuoles help in respiration.

b)

Vacuoles store water and nutrients.

c)

Vacuoles provide structural support to the plant.

d)

Vacuoles help in seed dispersal.

7.

What is the function of the nucleus in a cell?

a)

The nucleus is responsible for photosynthesis.

b)

The nucleus is the powerhouse of the cell.

c)

The nucleus contains the genetic material of the cell.

d)

The nucleus helps in protein synthesis.

8.

What is the function of the cell membrane?

a)

The cell membrane is responsible for photosynthesis.

b)

The cell membrane is the powerhouse of the cell.

c)

The cell membrane protect the cell.

d)

The cell membrane helps in cell division.

9.

What is the function of the endoplasmic reticulum?

a)

The endoplasmic reticulum is responsible for photosynthesis.

b)

The endoplasmic reticulum is the powerhouse of the cell.

c)

The endoplasmic reticulum helps in protein synthesis and lipid metabolism.

d)

The endoplasmic reticulum stores water in the cell.

10.

What is the function of the Golgi apparatus?

a)

The Golgi apparatus is responsible for photosynthesis.

b)

The Golgi apparatus is the powerhouse of the cell.

c)

The Golgi apparatus helps in protein modification and sorting.

d)

The Golgi apparatus stores water in the cell.

11.

What is the role of lysosomes in animal cells?

a)

Lysosomes help in respiration.

b)

Lysosomes store water and nutrients.

c)

Lysosomes break down waste materials and cellular debris.

d)

Lysosomes help in seed dispersal.

12.

Father of Microbiology

a)

Robert Hook

b)

Louis Pasteur

c)

Antonie van Leeuwenhoek

d)

Robert Brown

13.
Prokaryotes are found in which domain
a)
Animalia
b)
Plantae
c)
Eukarya
d)
Bacteria
14.
The bacteria seen in the picture is
a)
bacillus
b)
coccus
c)
spirilla
15.
To what would the phrase "is not a cell but has the ability to reproduce within a living cell" best describe?
a)
an alga
b)
a yeast
c)
a bacterium
d)
a virus
16.
Bacteria are used in
a)
farming
b)
the medical industry
c)
the food industry
d)
all of these
17.
Which of the following processes brings about an exchange of genetic information between bacterial cells?
a)
binary fission
b)
mutulaism
c)
conjugation
d)
replication
18.
Which of the structures is NOT found in bacteria?
a)
ribosome
b)
cell membrane
c)
cytoplasm
d)
nuclear membrane
19.
Viruses are made of
a)
Nucleic Acids and DNA
b)
Nucleic Acids and Proteins
c)
Proteins and Bacteriophages
d)
Proteins and Capsids
20.

Which of these is a cocci occurring in pairs?

a)

Streptococci

b)

Diplococci

c)

Streptococci

d)

Staphylococci

21.

To differentiate between Gram positive and Gram negative bacteria _____________________ procedure will be used.

a)
Gram Staining
b)

AFB Stain

c)

Geimsa Stain

d)

Gram Iodine

22.

A Gram negative cell wall is __________ than a Gram positive one.

a)
Thinner
b)

Thick

c)

Hard

d)

None of these

23.

Which of the following statement is TRUE regarding Gram positive bacteria?

a)

Cell wall have high lipid content

b)

Lipopolysacharides layer is present

c)

crystal violet stain is retained

d)

Have 2 layers of cytoplasmic membrane.

24.

What is the function of Pilus in prokaryotic?

a)

for swimming movement

b)

Attachment to surface

c)

Transfer of DNA to other cells

d)

Serve as defense mechanism

25.

Pleomorphic is the term used particularly for bacteria having

a)

One shape

b)

Rod

c)

Spiral

d)

Variable shape

26.

Bacteria are best measured in nanometers?

a)

True

b)

False

27.

Prokaryotic and eukaryotic cells have many differences, but they also share some common features. Which of the following may be found in either type of cell?

a)

Golgi bodies

b)

mitochondria

c)

ribosomes

d)

nucleus

28.

What is the purpose of pili?

a)

To generate energy and transport chemicals

b)

To allow the cell to stick to surfaces and transfer genetic material

c)

To synthesize proteins

d)

None of the things mentioned

29.

What are the three basic shapes of bacteria?

a)

Circular, triangular, and square

b)

Spherical, rod-shaped, and spiral

c)

Flat, curved, and elongated

d)

Pointed, angular, and irregular

30.

Bacteria are single-celled organisms that exist only inside other organisms.

a)

true

b)

false

31.

All bacteria are harmful to humans.

a)

true

b)

false

32.

Anaerobic bacteria can only grow in the presence of oxygen.

a)

true

b)

false

33.

What is the difference between nutrient agar and lactose broth?

a)

Nutrient agar is solid and lactose broth is liquid

b)

Both are liquid but lactose broth has added lactose sugar

c)

Nutrient agar is a selective media and lactose broth is a derived media

d)

there is no difference between the two types

34.

What is the bet pH for most bacterial growth?

a)

2

b)

4

c)

7

d)

11

35.

If you want to select for a specific type of bacteria, what type of media would you use?

a)

Nutrient broth

b)

Differential media

c)

Selective media

d)

an autoclave

36.

Nutrient broth is turned into nutrient agar by the addition of what?

a)

lactose

b)

eggs

c)

agar

d)

peptone

37.

The type of culture media that can turn bacteria different colors on a petri dish is called a ____ media

a)

selective

b)

differential

c)

natural

d)

broth

38.

This type of complex media is more rich than nutrient agar and includes the nutrient hemin.

a)

chocolate agar

b)

blood agar

c)

LB agar

d)

MacConkey agar

39.

This type of complex media contains lysed red blood cells and additional nutrients.

a)

blood agar

b)

MacConkey agar

c)

nutrient agar

d)

chocolate agar

40.

This type of media is composed of precise amounts of pure chemicals. It is essential when studying nutritional requirements of bacteria.

a)

selective media

b)

differential media

c)

chemically defined media

d)

enrichment culture media

41.

This type of media inhibits the growth of organisms other than the one being grown. Can be complex or chemically defined media.

a)

selective media

b)

diferential media

c)

chemically defined media

d)

enrichment culture media

42.

This type of media contains specific ingredients that help us to visually distinguish which species do or do not carry out a specific biochemical process.

a)

selective media

b)

differential media

c)

chemically defined media

d)

enrichment culture media

43.

This type of media inhibits the growth of organisms other than the one being grown. Can be complex or chemically defined media.

a)

selective media

b)

diferential media

c)

chemically defined media

d)

enrichment culture media

44.

This type of media enhances the growth of one particular species in a mixed population.

a)

selective media

b)

differential media

c)

chemically defined media

d)

enrichment culture media

45.

This media selects for gram-negative organisms and isolates lactose fermenters (pink) and non-lactose fermenters (clear).

a)

choclate agar

b)

Mannitol salt agar

c)

Eosin-methylene blue (EMB) agar

d)

MacConkey agar

46.

What is the difference between nutrient agar and lactose broth?

a)

Nutrient agar is solid and lactose broth is liquid

b)

Both are liquid but lactose broth has added lactose sugar

c)

Nutrient agar is a selective media and lactose broth is a derived media

d)

there is no difference between the two types

47.

If you want to select for a specific type of bacteria, what type of media would you use?

a)

Nutrient broth

b)

Differential media

c)

Selective media

d)

an autoclave

48.

Nutrient broth is turned into nutrient agar by the addition of what?

a)

lactose

b)

eggs

c)

agar

d)

peptone

49.

Peptone provides this nutritional need for bacteria.

a)

water

b)

oxygen

c)

protein

d)

iron

50.

All of these are derived media except

a)

blood

b)

nutrient agar

c)

lactose broth

d)

brilliant green bile broth

51.

What is the difference between nutrient agar and nutrient broth.

a)

one is liquid and one is solid

b)

one is sterile and one is not sterile

c)

one is acidic and one is basic

d)

one has extra sugar and one does not

52.

All of these options characterize natural media except

a)

Natural media is difficult to sterilize

b)

Natural media does have a long shelf life

c)

Natural media is more challenging to collect from its source

d)

Natural media comes in powder form and has to be put into solution

53.

The liquid media is also termed as

a)

Broth

b)

Solution

c)

Fluid

d)

Slant

54.

Which one of the following is not a source of nutrients for bacteria?

a)

Peptone

b)

Yeast extract

c)

Agar

d)

Beef extract

55.

The concentration of agar in culture media is

a)

1.5%

b)

1%

c)

.15%

d)

2.55

56.

Father of Microbiology is

a)

Louis Pasteur

b)

Lister

c)

Robert Koch

d)

Leeuwenhoek

57.

E.coli was first isolated by

a)

Hooke

b)

Pasteur

c)

Koch

d)

Escherich

58.

Hanging drop method for mobility study was given by

a)

Koch

b)

Pasteur

c)

Hooke

d)

Lister

59.

The bacteria were first observed in the year 1675 by

a)

Carolus Linnaeus

b)

Alexander Fleming

c)

Anton Von Leenuwenhoek

d)

Robert Brown

60.

The study of Fungi is

a)

Algalogy

b)

Mycology

c)

Bacteriology

d)

Phycology

61.

Counter stain used in Gram's Staining is

a)

Crystal Violet

b)

Ethanol

c)

Safranin

d)

Malachite green

62.

Gram positive bacteria

a)

E.coli

b)

Lactobacillus sp.

c)

Pseudomonas sp.

d)

All of the these

63.

Gram staining is an example of

a)

Acid fast staining

b)

Simple staining

c)

Negative staining

d)

Differential staining

64.

Which of the following is not a prokaryote?

a)

Bacteria

b)

Paramecium

c)

Cyanobacteria

d)

Rickettsia

65.

A 40X objective and 10X produce a magnification of

a)

50X

b)

100X

c)

400X

d)

4000X

66.

The first physician to make practical application of the germ theory of disease to surgery was

a)

Joseph Lister

b)

Louis Pastuer

c)

Robert Koch

d)

Edward Jenner

67.

The primary use of Koch postulates is to

a)

Clearly identify and characterize a particular microorganism

b)

Isolate microbes from diseased animals

c)

demonstrate that disease is caused by microorganisms

d)

develop vaccines for specific disease

68.

Mordant used in Gram's Staining is

a)

Crystal Violet

b)

Safranin

c)

Ethanol

d)

Iodine

69.

Lipid contents are more in

a)

Gram negative bacteria

b)

Gram positive bacteria

c)

Both

d)

None of the above

70.

The ability of microscope to distinguish between two objects into two separate objects is called

a)

Resolving power

b)

Numerical aperture

c)

Wavelegth

d)

Distance

71.

Microorganisms are measured in ________

a)

Micron

b)

mm

c)

Meter

d)

cm

72.

Disease causing microorganisms are called_______

a)

Pathogens

b)

Virus

c)

Bacteria

d)

Protozoa

73.

The protein coat surrounding the virus is called ________

a)

Envelope

b)

Membrane

c)

Capsid

d)

Network

74.

Antibiotic Penicillin obtained from___________.

a)

Agaricus

b)

Fusarium

c)

Penicillium notatum

d)

Pyricularia

75.

Yeast reproduce by______"

a)

Fission

b)

Budding

c)

Spore formation

d)

Fragmentation

76.

Malaria is caused by ______.

a)

Influenza

b)

Plasmodium

c)

Vibrio cholera

d)

Rhabdo Viridae

77.

Which of the following is NOT a physical method of microbial control?

a)

Radiation

b)

Filtration

c)

Heat

d)

Antibiotics

78.

Which of the following bacterial cell structures is involved in attachment to surfaces?

a)

Capsule

b)

Pili

c)

Flagella

d)

Endospore

79.

Which of the following is NOT a way that bacteria can acquire resistance to antibiotics?

a)

Mutation

b)

Transformation

c)

Conjugation

d)

Fermentation

80.

Bacteria are single-celled organisms that exist only inside other organisms.

a)

true

b)

false

81.

The cell wall gives the bacteria its shape.

a)

true

b)

false

82.

Which of the following is a part of cell envelope

a)

Ribosome

b)

Capsule

83.

Gram positive and gram negative organisms are different from each other with respect to

a)

Cell envelope

b)

cytoplasm

84.

Which of the following is bacterial appendage

a)

pili

b)

Hair

85.

what is shape of streptococcus

a)

spiral

b)

spherical

86.

Shape of helicobacter pylori

a)

Bacilli

b)

Spiral

87.

Bacilli are

a)

Rod shape

b)

Round shape

88.

What do you understand by aerobic respiration

a)

Do not require oxygen for respiration

b)

Require oxygen for respiration

89.

Which of the following is true about obligate anerobes

a)

killed by normal oygen in atmosphere

b)

require oxygen for metabolism

90.

What is the term used for organism that is infected

a)

Host

b)

Pathogen

91.

What is true about opportunistic pathogen

a)

causes in healthy host

b)

cause disease in immunocompromised host

92.

What do you understand by the binary fission

a)

Increase in number of bacteria by multiplication

b)

decraese in size of bacteria

93.

Which phase refers to maturation of individual bacteria without division

a)

log phase

b)

lag phase

94.

What is the term used for the phase in which bacteria die and do not divide

a)

log phase

b)

death phase

95.

Optimum pH for bacterial growth is

a)

6.5 to 7

b)

6.9 to 9

96.

Bacteria are mostly

a)

Thermophiles

b)

Mesophiles

97.

Name the bacterial staining method in which on dye is used

a)

compound staining

b)

simple staining

98.

To identify mycobacterium, which stain is used

a)

Romanowsky staining

b)

Ziehl nielsen stain

99.

Crystal violet during gram staining of bacteria is retained in

a)

gram positive

b)

gram negative

100.

Ziehl nielsen stain is an example of

a)

gram staining

b)

Acid fast staining

101.

Management of bacterial infection includes

a)

Antibiotics

b)

Antiviral

102.

_____is a prokaryotic microorganisms.

a)

Virus

b)

Algae

c)

Fungi

d)

Bacteria

103.

______shows both living and non-living characteristics.

a)

Protozoa

b)

Virus

c)

Bacteria

d)

Fungi

104.

Based on shape, the bacteria are of ______types.

a)

2

b)

3

c)

4

d)

5

105.

Disease causing microorganisms are called_______

a)

Pathogens

b)

Virus

c)

Bacteria

d)

Protozoa

106.
What is the smallest pathogen?
a)
Virus
b)
Bacteria
c)
Fungus
d)
Tapeworm
107.
What characteristic of viruses distinguishes them from cells?
a)
They do not have hereditary material (DNA).
b)
They are not separated from their environments.
c)
They lack an independent metabolism, so they need a host in order to reproduce.
d)
Their traits do not evolve in response to selection pressures.
108.
Which is the most effective defense against the chickenpox virus?
a)
Antibiotics
b)
Exercise
c)
Diet
d)
Vaccine
109.
Which statement best describes fungi?
a)
All fungi are scavengers.
b)
All fungi are multicellular.
c)
All fungi are producers.
d)
All fungi attack plant tissue but not animal tissue.
110.
Given favorable conditions, which disease-causing agent could quickly multiply into colonies of billions of cells in the space of a drop of water?
a)
bacteria
b)
fungi
c)
protists
d)
viruses
111.
Which contagion is correctly matched to the disease it causes? 
a)
polio - virus
b)
rabies - fungus
c)
influenza - parasite
d)
chicken pox - bacteria
112.

A village has an outbreak of cholera. Which would be the easiest way for a neighboring village to prevent the cholera epidemic from spreading to their village?

a)

Develop a cholera vaccination.

b)

Quarantine all individuals infected with cholera.

c)

Avoid contaminated water, or treat contaminated water before drinking it.

d)

Restrict travel to other villages that are farther away.

113.

protein shells are also known as

a)

Capsid

b)

Nuclei

c)

Cell Envelope

d)

Chemical Machinery

114.

Who invented the microscope

a)

Louis Pasteur

b)

Lister

c)

Robert Koch

d)

Leeuwenhoek

115.

Which one of the following is not a type of microscope

a)

Confocal Microscope

b)

Floresence Microscope

c)

Dark field Microscope

d)

UV Light Microscope

116.

corkscrew shaped bacteia are called

a)

Cocci

b)

Bacilli

c)

vibrios

d)

spirochaetes

117.

which of the following can be used as a methd of disinfection

a)

Heat

b)

Gas or Vapour

c)

Liquid

d)

All of them

118.

Identify B in the given image

a)

Eye piece

b)

Slide

c)

Holder

d)

Stage

119.

Identify A in the given Image

a)

Slide

b)

Holder

c)

Platform

d)

Stage

120.

Identify C in the given image

a)

focal Lense

b)

Lower lense

c)

light source

d)

adjustment lense

Similar Resources on Wayground

Tryout Ke-7 PPG Daljab Batch-1 LPTK IAIN Sultan Amai Gorontalo

120 questions

Tryout Ke-7 PPG Daljab Batch-1 LPTK IAIN Sultan Amai Gorontalo

quiz

Worksheet

•

University

4.2 Chemistry Unit Review - Long version

120 questions

4.2 Chemistry Unit Review - Long version

quiz

Worksheet

•

8th Grade - University

Biological Science Final Examination Fall 2025

120 questions

Biological Science Final Examination Fall 2025

quiz

Worksheet

•

University

Biology Review 2

120 questions

Biology Review 2

quiz

Worksheet

•

University

crying over these powerpoints rn

117 questions

crying over these powerpoints rn

quiz

Worksheet

•

University

Evolution

118 questions

Evolution

quiz

Worksheet

•

9th Grade - University

Pharmaceutics Exam 1

120 questions

Pharmaceutics Exam 1

quiz

Worksheet

•

University - Professi...

Practice Final Test

120 questions

Practice Final Test

quiz

Worksheet

•

6th Grade - University