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Microorganism

Total questions: 16

Worksheet time: 10mins

Name
Class
Date
1.

What is microorganism?

a)

small organism to be seen by the aided tool

b)

small organism can be seen clearly

2.
What is true about bacteria?
a)
Bacteria use photosynthesis to make their own food
b)
Bacteria can only be found in dirt
c)
Bacteria is always beneficial
d)
Bacteria can be used to make certain foods
3.
Which of the following statements are true?
a)
All microorganisms are bad
b)
All microorganisms are good
c)
Some microorganisms are harmful, while some can be helpful
d)
Microorganisms are too small to do anything to anyone
4.
Are microorganisms helpful or harmful?
a)
Helpful
b)
Harmful
c)
Both
d)
Neither
5.

You can find bacteria all over the world.

a)

True

b)

False

6.
What type of instrument would you use to look at cells?
a)
Telescope
b)
Giroscope
c)
Microscope
d)
None of the above
7.
A tiny, nonliving particle that invades and then reproduces inside a living cell.
a)
Bacteria
b)
Virus
c)
Protist
d)
Fungi
8.
What is Cilia?
a)
A tail like structure that help protist move
b)
Hair like fibers that help protist move
c)
A place where spores are kept
d)
A fake foot that help protist move
9.

In the growth curve for microorganism what is the phase of growth refereed to when death and production rates are equal?

a)

Log Phase

b)

Lag Phase

c)

Decline Phase

d)

Stationary Phase

10.

Beneficial or Harmful?


yeast used to cause bread to rise

a)

beneficial

b)

harmful

11.

When we refer to 'growth' with bacteria, we are talking about the population and not the size of the bacteria.

a)

False

b)

True

12.

Bacteria growth is

a)

linear

b)

quadratic

c)

exponential

d)

radical

13.

Why do bacteria enters the stationary phase?

a)

Because of the limitation of essential nutrients and accumulation of toxic by-products.

b)

Because they get tired.

c)

Because of depletion of nutrients.

14.

The portion of the growth curve where rapid growth of bacteria is observed is known as-

a)

Stationary Phase

b)

Death Phase

c)

Log Phase

d)

Lag Phase

15.

Which phase in bacterial growth curve shows the reproduction rate equal to the death rate?

a)

Lag Phase

b)

Stationary Phase

c)

Log Phase

d)

Decline Phase

16.

Which of the following is the type of reproduction found in most unicellular prokaryotic microorganisms?

a)

Budding

b)

Binary Fission

c)

Fragmentation