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Reinforcement - Unit 2

Total questions: 24

Worksheet time: 17mins

Name
Class
Date
1.
Which of the following is the smallest unit of life that can carry out all life functions?
a)
the mitochondria
b)
the vacuoles
c)
the nucleus
d)
the cell
2.
Which structures are found in every living cell?
a)
cell membrane and cytoplasm
b)
chloroplasts and mitochondria
c)
a cell wall and nucleus
d)
chloroplasts and cell wall
3.
What is the function of the cell nucleus found in both plant and animal cells?
a)
to produce energy
b)
to control cell activity
c)
to remove waste products
d)
to allow molecules to enter the cell
4.
Which cell structure is found in plant and animals cells and controls what can come into or leave a cell?
a)
cell membrane
b)
cytoplasm
c)
nucleus
d)
vacuole
5.
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
6.
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
7.
Which is not an example of a helpful microorganism?
a)
Yeast to help bread rise
b)
A virus used in a vaccine
c)
Microbes used to clean oil spills
d)
Bacteria that causes strep throat
8.
Four students in Mrs. Sterling's class make the following observations.  Choose which student is correct
a)
Shelby says that all microorganisms are found in the ocean.  Some are helpful, but some are harmful.  It's best to shower after swimming at the beach.
b)
Garry says that all microorganisms are harmful.  This is why we must get vaccinations and antibiotics from the doctor.
c)
Ireland says that some microorganims are helpful and some are harmful.  The best way to protect ourselves from harmful microbes is to wash our hands with soap and water.
d)
Jonathan says it's impossible to become sick from bacteria.  Only viruses and fungi can make a person sick.  Make sure to sneeze in your elbow to prevent the spread of germs.
9.
Four of Mrs. Sterling's students go to Six Flags.  Two become sick.  Choose which answer gives the best evidence as to why the students became sick.
a)
Isabela and Sauzaas become sick because they do not like the dressed up characters at Six Flags.  
b)
James and and Salwa become sick because they did not have enough money to buy a souvenir. 
c)
Sauzaas and James become sick because they ingested some chicken at the food stand that had bacteria on it.  
d)
Isabella and Salwa become sick because they washed their hands too many times while at the park.
10.

Influenza is a disease caused due to

a)

Bacteria

b)

virus

c)

Protozoa

d)

None of the above

11.

Bacteria is known as__________________ in an ecosystem when feeding on dead organisms.

a)

Decomposers

b)

Herbivore

c)

Pathogens

d)

Infections

12.

The Fermentation process is discovered by

a)

Louis Pasture

b)

Alexander flaming

c)

Edward jenner

d)

John Mendal

13.
 Starch and water molecules in potato cells are stored in what organelle?
a)
mitochondria
b)
nucleus
c)
cell wall
d)
vacuole
14.
In what part of the plant cell does the process of photosynthesis take place?
a)
nucleus
b)
mitochondria
c)
chloroplasts
d)
vacuoles
15.
What is the function of a cell wall?
a)
to protect and support the cell
b)
to perform different functions in each cell
c)
to prevent water from passing through it
d)
to prevent oxygen from entering the cell
16.
What is one basic function of the vacuoles?
a)
circulating oxygen
b)
producing food
c)
controlling cell processes
d)
storing water
17.
Which of the following are NOT found in animal cells
a)
chloroplasts and cytoplasm
b)
chloroplasts and cell wall
c)
cell wall and cell membrane
d)
mitochondria and nucleus
18.
What do vacuoles do? 
a)
They actually do not have an important role
b)
They protect the cell
c)
They are the brain of the cell
d)
storage area for cells; water storage in plants 
19.

Many celled organisms are called

a)

unicellular

b)

multicellular

c)

bicellular

d)

tricellular

20.

Which of the following statements is part of the cell theory?

a)

All living things are made up of one or more cells.

b)

Cells are the basic units of living things.

c)

All cells come from pre-existing cells.

d)

All of these

21.

According to the information in the given chart, what type of cell is cell X?

a)

bacteria cell

b)

plant cell

c)

animal cell

d)

prokaryotic cell

22.

Ian is looking at a cell using a microscope. He sees a nucleus and a large vacuole in the center of a cell. What type of cell is he most likely looking at?

a)

animal cell

b)

plant cell

c)

blood cell

d)

human cell

23.

Which of the following is true about cells?

a)

Cells have specialized components that perform different, specific functions.

b)

A cell’s components are all identical and perform the same function.

c)

Cells have specialized components that all perform the same functions.

24.

Which of the following statements is true?

a)

All multicellular organisms have skeletal systems.

b)

All multicellular organisms have specialized cells.

c)

All multicellular organisms have circulatory systems.

d)

All of these

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