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micro organisms friend and foe

Total questions: 185

Worksheet time: 2hrs 47mins

Name
Class
Date
1.

Question 1: Penicillin was discovered by

a)

Edward Jenner

b)

Louis Pasteur

c)

Alexander Fleming

d)

Robert Brown

2.

Question 2: Cold, influenza and most cough are caused by ___?

a)

Bacteria

b)

Viruses

c)

Fungi

d)

None of these

3.

Question 3: Antibiotics

a)

kill disease-causing microorganisms

b)

slow down the growth of disease-causing microorganisms

c)

convert sugar into alcohol

d)

speed up the growth of micoorganisms

4.

Question 4: Which of the following statements are True/False? (a) Citrus canker is a plant disease which is caused by micro-organisms. (b) Rust of wheat is caused by fungi.

a)

Only A

b)

Only B

c)

Both A and B

d)

None of these

5.

Question 5: The process of conversion of sugar into alcohol is known as ...

a)

Budding

b)

Fusion

c)

Fermentation

d)

Fixation

6.

Question 6: Consumption of food spoiled by some micro-organisms causes ____.

a)

Food-poisoning

b)

Cancer

c)

Lungs

d)

None of these

7.

Question 7: Which of the following statements are True/False? (A) Boiling kills many organisms. (B) Low temperature inhibits the growth of microbes.

a)

Only A

b)

Only B

c)

Both A and B

d)

None of these

8.

Question 8: Conversion of nitrogen to ammonia is

a)

nitrification

b)

phosphorylation

c)

denitrification

d)

nitrogen fixation

9.

Question 9: The microorganisms that cause diseases in human beings, plants and animals are called _

a)

Carriers

b)

Spirogyra

c)

Pathogens

d)

Antibodies

10.

Question 10: Who discovered Fermentation ?

a)

Edward Jenner

b)

Alexander Fleming

c)

Louis Pasteur

d)

Selman Waksman

11.

Question 11: Dysentery is a _______ disease.

a)

bacterial

b)

viral

c)

protozoan

d)

fungal

12.

Question 12: Which of the following is a non-communicable disease?

a)

Tuberculosis

b)

Chicken pox

c)

Diabetes

d)

Common cold

13.

Identify Me

I may be found as a single cell or as multiple cells.

I have a cell wall and chloroplast ,but i don't have roots,shoots or leaves

a)

Bacteria

b)

Virus

c)

Algae

d)

Fungi

14.

Which of the following is not a bacteria

a)

E.Coli

b)

Salmonella

c)

Bacillus Anthracis

d)

Bacteriophage

15.

Father of modern microbiology

a)

Edward Jenner

b)

Antonie van Leeuwenhoek

c)

Robert Koch

d)

Louis Pasteur

16.

Name the organism

a)

Paramecium

b)

Cockroach

c)

Amoeba

d)

Chlamydomonas

17.

Antibiotics are not useful against viral infections

a)

False

b)

True

18.

Mode of transmission of Chicken Pox is

a)

Air

b)

Water

c)

Contact

d)

Food

19.

Name the process by which bacteria turns compounds of nitrogen back into atmospheric nitrogen

(a)  

20.

A fungi which is a rich source of protein

a)

Mushroom

b)

Chlamydomonas

c)

Tofu

d)

Aspergillus

21.

Which among the following insects is vector of the Dengue virus

a)

Female Anopheles Mosquito

b)

Female Aedes Mosquito

c)

House fly

d)

Cockroach

22.

Name the chemical preservative used in jams and squashes

a)

Carbon Benzoate

b)

Salt

c)

Sodium metabisulphite

d)

Oil and vinegar

23.

1. Yeast is used in the production of ____________

a)

sugar

b)

alcohol

c)

hydrochloric acid

d)

oxygen

24.
Are microorganisms helpful or harmful?
a)
Helpful
b)
Harmful
c)
Both
d)
Neither
25.

Carrier of malaria causing protozoan is

a)

Female Anopheles mosquito

b)

Cockroach

c)

Housefly

d)

Butterfly

26.

Question 1: Penicillin was discovered by

a)

Edward Jenner

b)

Louis Pasteur

c)

Alexander Fleming

d)

Robert Brown

27.

Question 2: Cold, influenza and most cough are caused by ___?

a)

Bacteria

b)

Viruses

c)

Fungi

d)

None of these

28.

Question 3: Antibiotics

a)

kill disease-causing microorganisms

b)

slow down the growth of disease-causing microorganisms

c)

convert sugar into alcohol

d)

speed up the growth of micoorganisms

29.

Question 5: The process of conversion of sugar into alcohol is known as ...

a)

Budding

b)

Fusion

c)

Fermentation

d)

Fixation

30.

Question 6: Consumption of food spoiled by some micro-organisms causes ____.

a)

Food-poisoning

b)

Cancer

c)

Lungs

d)

None of these

31.

A fungus that causes skin disease.

a)

Ring Worm

b)

Salmonella

c)

Yeast

d)

Athletes Foot

32.

Identify the microbe given in the picture-

a)

Virus

b)

Penicillium

c)

Spirogyra

d)

Blue green algae

33.

What do a and b in the Nitrogen cycle represent?

a)

animals excretion, plant excretion

b)

Nitrogen uptake , Nitrogen relase

c)

uptake by plants , nitrogen compounds in soil

d)

Nitrogen compounds in soil, uptake by plants

34.

Attendance-Write your name, class and section. Did you like this session ?( Answer in yes/ no)

Any suggestions?

4 lines
35.

The reason for changes observed in the given figure is (a)  

36.

Most microorganisms cannot be seen without a...

a)

microscope

b)

telescope

c)

magnifying lens

d)

x-ray machine

37.

Yogurt and cheese can be produced from ___________.

a)

Protozoa

b)

Bacteria

c)

Virus

d)

Algae

38.

The smallest microorganism on earth is known as _____________

a)

algae

b)

bacteria

c)

a virus

d)

fungi

39.

Harmful bacteria produces cheese.

a)

True

b)

False

40.

______________ helps us digest our food and they produce needed vitamins.

a)

Bacteria

b)

Protozoa

c)

Fungi

d)

Algae

41.

Yeast is used to make...

a)

rolls

b)

pizza crust

c)

cakes

d)

all of the above

42.

Which is the optimum (best) temperature for bacterial growth?

a)

75C

b)

5C

c)

63C

d)

37C

43.

Bacteria belongs to a group known as _______________.

a)

yeast

b)

fungi

c)

micro-organisms

44.

Fungi grows well in _____________ and _____________ places.

a)

warm and dark

b)

warm and bright

c)

cold and dark

d)

cold and bright

45.

Fungi feed on living things, dead or alive. Hence, we say that Fungi needs _________________.

a)

water

b)

food

c)

air

46.

Bacteria do not response to changes in the surroundings. True or False?

a)

True. Bacteria is not a living thing.

b)

False. Bacteria is a living thing.

47.

A living thing, capable of making and using energy, reproducing, growing and changing, responding to its environment, and getting rid of wastes.

a)

plant

b)

organism

c)

bacteria

d)

animal

48.

Amoeba is an example of

a)

Virus

b)

Bacteria

c)

Protozoa

d)

Fungus

49.

Which is not a condition for the growth of microorganisms

a)

Water

b)

Sunlight

c)

Suitable temperature

d)

Food supply

50.

Rhizobium bacteria helps in

a)

Denitrification

b)

Nitrogen fixation

c)

Biogas Fermentation

d)

All of these

51.

Which of the following causes potato blight

a)

Fungus

b)

Virus

c)

Amoeba

52.

Disease causing microorganisms are called

a)

Antibodies

b)

Vaccines

c)

Antigen

d)

Pathogen

53.

Tetanus vaccines are

a)

Dead microbes

b)

Live microbes

c)

Toxoids

54.

When an antigen enters our body, our body produces

a)

Vaccines

b)

Pathogens

c)

Toxins

d)

Antibodies

55.

The period between the infection and the appearance of symptoms is called

a)

Incubation period

b)

Vaccination period

c)

Gestation period

56.

Plants get their nitrogen from the soil in the form of

a)

Nitrates

b)

Nitrogen dioxide

c)

Nitric acid

57.

Identify the bacteria present in this structure

a)

Rhizobium

b)

Penicillin

c)

Casein

d)

Spyrogyra

58.

Identify this picture

a)

Amoeba

b)

Spirogyra

c)

Penicillium

d)

Bacillus

59.

Which of these cannot prevented by vaccination

a)

Cholera

b)

Typhoid

c)

Polio

d)

Gastroenteritis

60.

Which of this is not a bacterial infection

a)

Typhoid

b)

Polio

c)

Cholera

d)

Tuberculosis

61.

Malaria and Amoebic Dysentry are caused by

a)

Protozoans

b)

Bacteria

c)

Virus

d)

Fungus

62.

Which of the following caused by bacteria

a)

Common Cold

b)

Covid 19

c)

Tuberculosis

d)

Ringworm

63.
One celled organism with a nucleus
a)
Bacteria
b)
Protists
c)
Fungi
d)
Virus
64.
One celled organisms with no nucleus
a)
Bacteria
b)
Protists
c)
Fungi
d)
Virus
65.
Tiny hair-like structures uses for movement and gathering food by single celled organisms
a)
Flagella
b)
Pseudopods
c)
Cilia
d)
Cytoplasm
66.
A whip like structure used for movement by single celled organisms
a)
Flagella
b)
Pseudopods
c)
Cilia
d)
Cytoplasm
67.
Arm-like structures that extend from a cell and surround food (seen in amoebas)
a)
Flagella
b)
Pseudopods
c)
Cilia
d)
Cytoplasm
68.
A disease, common in tropical areas of the world, that is caused by the the protist plasmodium
a)
E. Coli
b)
Black Plague
c)
Malaria
d)
Smallpox
69.
A disease that killed nearly ⅓ of the world’s population in the 1300s
a)
E. Coli
b)
Black Plague
c)
Malaria
d)
Smallpox
70.
A carrier of the bacteria yersinia pestis. They live on rats and transmitted disease
a)
Anopheles Mosquitoes
b)
Fleas
c)
Mushrooms
d)
Amoeba
71.
This insect transmits the protist that causes malaria
a)
Anopheles Mosquitoes
b)
Fleas
c)
Mushrooms
d)
Amoeba
72.
The protist that causes malaria in humans
a)
Plasmodium
b)
Yersinia Pestis
c)
Hyphae
d)
Smallpox
73.
Many protists in the ocean produce this, which helps helps all life on earth survive
a)
Water
b)
Bacteria
c)
Cilia
d)
Oxygen
74.
This is the brain of the cell and is found in all cells except bacteria
a)
Nucleus
b)
Cell Wall
c)
Cytoplasm
d)
Endoplasmic Reticulum
75.
This is the bacteria that caused the Black Death
a)
Plasmodium
b)
Yersinia Pestis
c)
Hyphae
d)
Smallpox
76.
Athletes foot is caused by this type of organism
a)
Bacteria
b)
Protists
c)
Fungi
d)
Virus
77.
This is a type of fungus you can eat
a)
Mushrooms
b)
Mold
c)
Yogurt
d)
Pickles
78.
A positive use of mold is for the creation of this type of medicine that fights bacteria
a)
Vaccines
b)
Antibiotics
c)
Anti-fungal cream
d)
White blood cells
79.
This scientist discovered that mold can kill bacteria
a)
Edward Jenner
b)
Molly Watson
c)
Alexander Fleming
d)
Anton Leuwenhook
80.
A microbe that is not living, but reproduces by attaching and using the machinery in a cell.
a)
Bacteria
b)
Protists
c)
Fungi
d)
Virus
81.
Viruses often do this when they leave a cell.
a)
Antibodies
b)
Kill the cell
c)
Cilia
d)
Flagella
82.
These help protect your cells from viruses by clamping onto the surface of the cell and preventing the virus from getting in
a)
Antibodies
b)
Antibiotics
c)
White blood cells
d)
Flagella
83.
These can help your body produce antibodies to stop the spread of viruses.
a)
Vaccines
b)
Antibiotics
c)
Anti-fungal cream
d)
Red Blood Cells
84.
Ed. Jenner infected a boy with this, which helped him produce antibodies for the smallpox virus.
a)
E. Coli
b)
Black Plague
c)
Malaria
d)
Cowpox
85.
White blood cells do this.
a)
Attach to cells so they can't be infected by a virus
b)
Destroy infected cells
c)
Explode cells by reproducing inside of them
d)
Work with bacteria to form disease fighting microbes
86.

Amoeba is an example of

a)

Virus

b)

Bacteria

c)

Protozoa

d)

Fungus

87.

Which is not a condition for the growth of microorganisms

a)

Water

b)

Sunlight

c)

Suitable temperature

d)

Food supply

88.

Rhizobium bacteria helps in

a)

Denitrification

b)

Nitrogen fixation

c)

Biogas Fermentation

d)

All of these

89.

Which of the following causes potato blight

a)

Fungus

b)

Virus

c)

Amoeba

90.

Disease causing microorganisms are called

a)

Antibodies

b)

Vaccines

c)

Antigen

d)

Pathogen

91.

Tetanus vaccines are

a)

Dead microbes

b)

Live microbes

c)

Toxoids

92.

When an antigen enters our body, our body produces

a)

Vaccines

b)

Pathogens

c)

Toxins

d)

Antibodies

93.

The period between the infection and the appearance of symptoms is called

a)

Incubation period

b)

Vaccination period

c)

Gestation period

94.

Plants get their nitrogen from the soil in the form of

a)

Nitrates

b)

Nitrogen dioxide

c)

Nitric acid

95.

Identify the bacteria present in this structure

a)

Rhizobium

b)

Penicillin

c)

Casein

d)

Spyrogyra

96.

Identify this picture

a)

Amoeba

b)

Spirogyra

c)

Penicillium

d)

Bacillus

97.

Which of these cannot prevented by vaccination

a)

Cholera

b)

Typhoid

c)

Polio

d)

Gastroenteritis

98.

Which of this is not a bacterial infection

a)

Typhoid

b)

Polio

c)

Cholera

d)

Tuberculosis

99.

Malaria and Amoebic Dysentry are caused by

a)

Protozoans

b)

Bacteria

c)

Virus

d)

Fungus

100.

Which of the following caused by bacteria

a)

Common Cold

b)

Covid 19

c)

Tuberculosis

d)

Ringworm

101.

What are small living things called?

a)

Micro-organisms

b)

Macro-organisms

c)

Fish

d)

Bacterial

102.

What are the 3 types of micro-organisms?

a)

Bacteria, plasma, gas

b)

Bacteria, Germs, Plasma

c)

Bacteria, Fungi, Virus

d)

Bacteria, Flipper, Virus

103.

What is the smallest type of micro-organism?

a)

Virus

b)

Bacteria

c)

Fungus

d)

Spore

104.

What is a harmful effect of bacteria?

a)

Can be used to make yogurt

b)

Can be used to make antibiotics

c)

Help make some vitamins in the human body

d)

Cause disease

105.

What is the food source for bacteria in a petri dish?

a)

Decomposing

b)

Agar

c)

Protein

d)

Petri

106.

Colds, Flu's and Ebola are what type of infections?

a)

Viral

b)

Fungal

c)

Bacterial

d)

Genetic

107.

Athlete's Foot and Ringworm are what types of infection?

a)

Bacterial

b)

Fungal

c)

Viral

d)

Genetic

108.

Which of the following is a bacterial infection?

a)

TB

b)

Cold

c)

Cold sore

d)

Sore toe

109.

What is a parasite?

a)

Something that feeds on dead organisms

b)

Something that lives off other organisms causing them harm

c)

Something that eats plants only

d)

Something that cannot reproduce by itself

110.

A disease causing microorganism is called?

a)

Vaccine

b)

Parasite

c)

Agar

d)

Pathogen

111.

Which of the following statements about freezing as a method of food preservation is INCORRECT?

a)

It helps to slow down the growth of food spoiling bacteria.

b)

It kills the bacteria present in the food.

c)

It helps to slow down the enzyme activity of food spoiling bacteria

d)

The water inside the food freezes into ice crystals

112.

What food preservation technique has been used here?

a)

Freezing.

b)

Drying.

c)

Salting.

113.

It is the removal of the moisture content of the food.

a)

Drying

b)

Freezing

c)

Salting

114.

Assertion: Pasteurisation is the method to preserve milk.

Reason: In pasteurisation, the milk is heated to high temperature and cool down slowly.

a)

Both A and R are true and R is the correct explanation of A.

b)

Both A and R are true but R is not the correct explanation of A.

c)

A is true but R is false. A is false but R is true.

d)

Both A and R are false.

115.

Assertion: Adding salt preserves the meat and fish for ages.

Reason: Salt draws water out of food and dehydrates the food.

a)

Both A and R are true and R is the correct explanation of A.

b)

Both A and R are true but R is not the correct explanation of A.

c)

A is true but R is false. A is false but R is true.

d)

Both A and R are false.

116.

Which of the following is considered a physical property of an element?

a)

density

b)

color

c)

conductivity

d)

flammable

117.

Malleability is a physical property. It means . . .

a)

a solid element can be crushed into a powder.

b)

a solid piece of metal can be hammered into a shape.

c)

a solid piece of metal can be pulled into a wire.

d)

a solid can be melted to a liquid.

118.
Which of the following is a property of a non-metal?
a)
Conducts electricity and heats well
b)
Can be hammered into thin sheets
c)
Is brittle and breaks easily
d)
Has a shiny, metallic luster
119.

Assertion: Mercury is widely used in clinical thermometer.

Reason: Mercury is solid at room temperature.

a)

Both A and R are true and R is the correct explanation of A.

b)

Both A and R are true but R is not the correct explanation of A.

c)

A is true but R is false. A is false but R is true.

d)

Both A and R are false.

120.

Assertion: Copper used widely to conduct electricity.

Reason: Silver has the highest electrical conductivity of all metals.

a)

Both A and R are true and R is the correct explanation of A.

b)

Both A and R are true but R is not the correct explanation of A.

c)

A is true but R is false. A is false but R is true.

d)

Both A and R are false.

121.

What is the name of the only Autotrophic Protzoan ?

a)

Euglena

b)

Ameoba

c)

Virus

d)

Flagellum

122.

Which organelle can locomote in bacteria?

(a)  

123.

What is the slimy coating present in Bacteria called?

(a)  

124.

Name the 2 types of autotrophs.

(a)  

125.

Viruses have all cell organelles present in them.

a)

True

b)

False

126.

Are algae autotrophic and prokaryotic?

a)

True

b)

False

127.

What are the colorless threads present in Fungi called?

a)

Mycelium

b)

Paramoecium

c)

Hyphae

d)

Microbes

128.

Which type of Fungi do not show the presence of Rhizoids?

a)

Salmonella

b)

Mucor

c)

Yeast

129.

What is the name of the food used to feed fish?

(a)  

130.

Is it possible for Bacteria to grown immune to Antibiotics?

a)

Yes

b)

No

c)

Maybe

131.

What are disease causing Microorganisms known as?

4 lines
132.

Carriers which carry specific diseases are known as?

(a)  

133.

Can you write an example of a communicable disease?

4 lines
134.

Which animal has a bacteria which can cause Anthrax?

(a)  

135.

Can Fungi spoil only cooked foods?

a)

Yes

b)

No

c)

Maybe

136.

Question 1: Penicillin was discovered by

a)

Edward Jenner

b)

Louis Pasteur

c)

Alexander Fleming

d)

Robert Brown

137.

Question 2: Cold, influenza and most cough are caused by ___?

a)

Bacteria

b)

Viruses

c)

Fungi

d)

None of these

138.

Question 3: Antibiotics

a)

kill disease-causing microorganisms

b)

slow down the growth of disease-causing microorganisms

c)

convert sugar into alcohol

d)

speed up the growth of micoorganisms

139.

Question 4: Which of the following statements are True/False? (a) Citrus canker is a plant disease which is caused by micro-organisms. (b) Rust of wheat is caused by fungi.

a)

Only A

b)

Only B

c)

Both A and B

d)

None of these

140.

Question 5: The process of conversion of sugar into alcohol is known as ...

a)

Budding

b)

Fusion

c)

Fermentation

d)

Fixation

141.

Question 6: Consumption of food spoiled by some micro-organisms causes ____.

a)

Food-poisoning

b)

Cancer

c)

Lungs

d)

None of these

142.

Question 7: Which of the following statements are True/False? (A) Boiling kills many organisms. (B) Low temperature inhibits the growth of microbes.

a)

Only A

b)

Only B

c)

Both A and B

d)

None of these

143.

Question 8: Conversion of nitrogen to ammonia is

a)

nitrification

b)

phosphorylation

c)

denitrification

d)

nitrogen fixation

144.

Question 9: The microorganisms that cause diseases in human beings, plants and animals are called _

a)

Carriers

b)

Spirogyra

c)

Pathogens

d)

Antibodies

145.

Question 10: Who discovered Fermentation ?

a)

Edward Jenner

b)

Alexander Fleming

c)

Louis Pasteur

d)

Selman Waksman

146.

Question 11: Dysentery is a _______ disease.

a)

bacterial

b)

viral

c)

protozoan

d)

fungal

147.

Question 12: Which of the following is a non-communicable disease?

a)

Tuberculosis

b)

Chicken pox

c)

Diabetes

d)

Common cold

148.

Identify Me

I may be found as a single cell or as multiple cells.

I have a cell wall and chloroplast ,but i don't have roots,shoots or leaves

a)

Bacteria

b)

Virus

c)

Algae

d)

Fungi

149.

Which of the following is not a bacteria

a)

E.Coli

b)

Salmonella

c)

Bacillus Anthracis

d)

Bacteriophage

150.

A fungi which is a rich source of protein

a)

Mushroom

b)

Chlamydomonas

c)

Tofu

d)

Aspergillus

151.

Father of modern microbiology

a)

Edward Jenner

b)

Antonie van Leeuwenhoek

c)

Robert Koch

d)

Louis Pasteur

152.

Name the organism

a)

Paramecium

b)

Cockroach

c)

Amoeba

d)

Chlamydomonas

153.

Antibiotics are not useful against viral infections

a)

False

b)

True

154.

Which among the following insects is vector of the Dengue virus

a)

Female Anopheles Mosquito

b)

Female Aedes Mosquito

c)

House fly

d)

Cockroach

155.

Mode of transmission of Chicken Pox is

a)

Air

b)

Water

c)

Contact

d)

Food

156.

Name the chemical preservative used in jams and squashes

a)

Carbon Benzoate

b)

Salt

c)

Sodium metabisulphite

d)

Oil and vinegar

157.

Name the process by which bacteria turns compounds of nitrogen back into atmospheric nitrogen

(a)  

158.

1. Yeast is used in the production of ____________

a)

sugar

b)

alcohol

c)

hydrochloric acid

d)

oxygen

159.

2. The following is an antibiotic ____________

a)

sodium bicarbonate

b)

streptomycin

c)

alcohol

d)

yeast

160.

3. Carrier of malaria causing protozoan is _____________

a)

female anopheles mosquito

b)

cockroach

c)

housefly

d)

butterfly

161.

4. The most common carrier of communicable diseases is __________

a)

ant

b)

housefly

c)

dragonfly

d)

spider

162.

5. The bread or idli dough rises because of __________

a)

heat

b)

grinding

c)

growth of yeast cells

d)

kneading

163.

7. Malaria is caused by _______________

a)

protozoa

b)

virus

c)

algae

d)

bacteria

164.

8. Rhizobium bacteria _______________

a)

helps in nitrogen fixation

b)

cause various diseases

c)

help in digestion

d)

all of the above

165.

10. Scientist who discovered the fermentation _______________

a)

Alexander Fleming

b)

Louis Pasteur

c)

John Mendel

d)

Charles Darwin

166.

11. Vaccine for smallpox is discovered by ________________

a)

Louis Pasteur

b)

Alexander Fleming

c)

Edward Jenner

d)

John Mendel

167.

12. The method of preserving food by adding salt is called ______________

a)

salting

b)

dehydration

c)

canning

d)

freezing

168.

13. A bacteria that helps in the synthesis of vitamin B complex in our body is _______________

a)

Escherichia coli

b)

clostridium

c)

euglena

d)

none of these

169.

15. The ammonia is converted to nitrates by _______________

a)

ammonifying bacteria

b)

denitrifying bacteria

c)

nitrifying bacteria

d)

all the above

170.

16. The other name of denitrifying bacteria is ________________

a)

Pseudomonas

b)

Nitrosomonas

c)

Nitrobacter

d)

Rhizobium

171.

17. Which of the following diseases is not caused by a virus?

a)

cholera

b)

chicken pox

c)

polio

d)

influenza

172.

18. Which of the following cannot be considered as a microbe?

a)

aspergillus

b)

aedes

c)

spirogyra

d)

blue green algae

173.

19. Which of the following diseases is caused by a fungi?

a)

citrus canker

b)

anthrax

c)

rust of wheat

d)

yellow vein mosaic

174.

20. Which of the following can be used to preserve food items?

a)

common salt

b)

sodium benzoate

c)

sodium metabisulphite

d)

all of these

175.

21. Common bread mould is a fungi, which exhibits saprophytic mode of nutrition.

a)

true

b)

false

176.

22. Bacteria are involved in making of cheese

a)

true

b)

false

177.

23. Polio drops given to children is actually an antibiotic.

a)

true

b)

false

178.

24. Viruses can be seen through naked eye an can cause diseases like cholera and typhoid.

a)

true

b)

false

179.

26. Squashes and jams are preserved by adding salt.

a)

true

b)

false

180.

27. All viruses are parasitic in nature

a)

true

b)

false

181.

29. Penicillin antibiotic is obtained from fungi

a)

true

b)

false

182.

Question 1: Penicillin was discovered by

a)

Edward Jenner

b)

Louis Pasteur

c)

Alexander Fleming

d)

Robert Brown

183.

Question 2: Cold, influenza and most cough are caused by ___?

a)

Bacteria

b)

Viruses

c)

Fungi

d)

None of these

184.

Question 3: Antibiotics

a)

kill disease-causing microorganisms

b)

slow down the growth of disease-causing microorganisms

c)

convert sugar into alcohol

d)

speed up the growth of micoorganisms

185.

Question 5: The process of conversion of sugar into alcohol is known as ...

a)

Budding

b)

Fusion

c)

Fermentation

d)

Fixation

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SC Science PASS Review 2018

189 questions

SC Science PASS Review 2018

quiz

Worksheet

•

8th Grade