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CHAPTER 2 (MICRO-ORGANISM FRIEND AND FOE)

Total questions: 35

Worksheet time: 22mins

Name
Class
Date
1.

Amoeba is an example of

a)

Virus

b)

Bacteria

c)

Protozoa

d)

Fungus

2.

Rhizobium bacteria helps in

a)

Denitrification

b)

Nitrogen fixation

c)

Biogas Fermentation

d)

All of these

3.

Disease causing microorganisms are called

a)

Antibodies

b)

Vaccines

c)

Antigen

d)

Pathogen

4.

When an antigen enters our body, our body produces

a)

Vaccines

b)

Pathogens

c)

Toxins

d)

Antibodies

5.

Plants get their nitrogen from the soil in the form of

a)

Nitrates

b)

Nitrogen dioxide

c)

Nitric acid

6.

Identify the bacteria present in this structure

a)

Rhizobium

b)

Penicillin

c)

Casein

d)

Spyrogyra

7.

Which of this is not a bacterial infection

a)

Typhoid

b)

Polio

c)

Cholera

d)

Tuberculosis

8.

Which of the following caused by bacteria

a)

Common Cold

b)

Covid 19

c)

Tuberculosis

d)

Ringworm

9.

Question 1: Penicillin was discovered by

a)

Edward Jenner

b)

Louis Pasteur

c)

Alexander Fleming

d)

Robert Brown

10.

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

11.

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

a)

Budding

b)

Fusion

c)

Fermentation

d)

Fixation

12.

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

a)

Food-poisoning

b)

Cancer

c)

Lungs

d)

None of these

13.

Question 8: Conversion of nitrogen to ammonia is

a)

nitrification

b)

phosphorylation

c)

denitrification

d)

nitrogen fixation

14.

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

a)

Carriers

b)

Spirogyra

c)

Pathogens

d)

Antibodies

15.

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

a)

Tuberculosis

b)

Chicken pox

c)

Diabetes

d)

Common cold

16.
Which is a true statement?
a)
All microorganisms are harmful.
b)
All microorganisms are beneficial.
c)
Some microorganisms are harmful while others are beneficial.
d)
Microorganisms are beneficial only to humans.
17.
Yeast is used to make...
a)
rolls
b)
cakes
c)
pizza crust
d)
all of the above
18.
What is the cause of the common cold?
a)
bacteria
b)
cold temperatures
c)
sneezing and coughing
d)
viruses
19.
Yogurt and cheese  can be produced from ___________.
a)
Bacteria
b)
Virus
c)
Protozoa
d)
Algae
20.
Harmful bacteria produces cheese.
a)
True
b)
False
21.

Which of these is a common symptom of food poisoning

a)

vomiting

b)

coughing

c)

sore throat

d)

aching muscles

22.
Most microorganisms cannot be seen without a...
a)
microscope
b)
magnifying lens
c)
telescope
d)
x-ray machine
23.
What is a way that you can protect yourself from microorganisms that can live on food?
a)
Store uncooked meats in a refrigerator or freezer. 
b)
Wash hands with soap and water before and after handling food.
c)
Cook chicken and other raw meats thoroughly.
d)
All of the above
24.
Which best describes where you would find microorganisms?
a)
in ponds, lakes, and oceans.
b)
in animals, plants, and humans.
c)
on food that has rotted.
d)
everywhere around us.
25.
______________ helps us  digest our food and they produce needed vitamins.
a)
Bacteria
b)
Fungi
c)
Protozoa
d)
Algae
26.
The smallest microorganism on earth is known as  _____________
a)
a virus
b)
bacteria
c)
algae
d)
fungi
27.
What is Penicillin (medicine) made from?
a)
Water
b)
Sugar
c)
Mold
d)
Algae
28.
Mold helps dead things (plants, animals)...
a)
Grow
b)
Decay
c)
Sleep
d)
Reproduce
29.
Some fungus can provide food.
a)
True
b)
False
30.
Fungi can cause skin diseases and kill crops.
a)
True
b)
False
31.
Anti-bacterial means:
a)
active against bacteria.
b)
feeds bacteria and helps it grow.
c)
has no effect on bacteria.
d)
sometimes works against bacteria, but not always.
32.
Anti-bacterial agents can include:
a)
creams, lotions, water
b)
hot water, soap, 
c)
lotion, soap, cold water
d)
tissues, hand sanitizer, soap
33.
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
34.
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
35.

HOW WAS THE TEST

a)

GOOD

b)

AVERAGE

c)

BAD

d)

NEED MORE PRACTICE

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