WorksheetsCells and Microorganisms Review
Total questions: 12
Worksheet time: 6mins
Name
Class
Date
1.
Which of the following is the basic building block of living organisms?
a)
cell
b)
organelle
c)
nucleus
d)
organ system
2.
A student wants to study the organelles in a plant leaf. How can she see the organelles?
a)
Use special glasses.
b)
Use only her eyes.
c)
Use a hand lens
d)
Use a microscope.
3.
Jenee claims that students cannot see all of the parts of animals without a special tool. Is she correct? What evidence supports the claim?
a)
Jenee is wrong. All parts of animals can be seen with the unaided eye.
b)
Jenee is wrong. You can see all the parts of animals without a tool.
c)
Jenee is correct. When you look at an animal under a microscope, you can see smaller parts called cells.
d)
Jenee is correct. When you look at an animal under a microscope, you can see smaller parts called particles
4.
Look at the cell model. Which of the following is correct?
a)
The model is an animal cell because it has a cell membrane, but no cell wall.
b)
The model is an animal cell because it has a nucleus.
c)
The model is a plant cell because it has a nucleus.
d)
The model is a plant cell because it has a cell membrane, but no cell wall.
5.
Which structure is most likely represented by the grape?
a)
cell wall
b)
nucleus
c)
cytoplasm
d)
cell membrane
6.
A student is making a model of a plant cell and an animal cell. Which of the following should only be included in the plant cell?
a)
nucleus
b)
chloroplast
c)
mitochondrion
d)
cell membrane
7.
Mack claims that this cell must have come from a plant, but his friend Luna claims that it is definitely an animal cell. Who is correct?
a)
Mack is correct because he is the one looking at the cell.
b)
Mack is correct because the cell does not have a cell membrane.
c)
Luna is correct because the cell has a nucleus.
d)
Luna is correct because the cell does not have a cell wall.
8.
Which of the following observations would provide the best evidence that microorganisms are beneficial to the ecosystem of a pond?
a)
The number of microorganisms that live in a pond habitat can change over time
b)
Microorganisms live on the roots of some plants or inside the gut of some animals
c)
Microorganisms are found in many kinds of pond habitats with different temperatures and levels of rainfall.
d)
More plants and animals live and thrive in a pond with a higher concentration of microorganisms.
9.
A student claims that microorganisms are helpful to the surrounding ecosystems. Which evidence supports the student's claim?
a)
Millions of microorganisms can often be found in soil.
b)
Microorganisms are too small to be seen without special equipment.
c)
Like all living things, microorganisms need water and energy.
d)
Microorganisms break down dead plants and animals, making nutrients available
10.
Which evidence supports the claim that a certain microorganism can be harmful to a pond ecosystem?
a)
Microorganisms are too small to be seen without special equipment.
b)
The number of plants and animals in the pond decreased when the microorganism was introduced.
c)
The number of plants and animals in the pond increased when the microorganism was introduced.
d)
Microorganisms are found in many kinds of pond habitats with different temperatures.
11.
Which argument should the student use to support a claim that some bacteria are harmful to larger organisms?
a)
Some bacteria can harm humans because bacteria reproduce faster when they are cooked at high temperatures.
b)
Some bacteria can harm humans because bacteria become toxic when cooked at high temperatures
c)
Some bacteria can harm humans because bacteria make food taste bad when it is not cooked properly
d)
Some bacteria can harm humans because bacteria can cause food poisoning when contaminated food is not cooked properly.
12.
Which of the following is evidence that microorganisms can be harmful to larger organisms?
a)
Microorganisms break down wastes.
b)
Microorganisms can be used to make antibiotics
c)
Microorganisms can cause some foods to spoil
d)
Microorganisms can release nutrients in soil.
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