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unit 2 review

Total questions: 36

Worksheet time: 24mins

Name
Class
Date
1.

Which of the following statements best describes the term photosynthesis?

a)

When plants absorb the energy from the sun.

b)

How plants reproduce.

c)

The process by which plants make their own food.

d)

The process by which animals make their own food.

2.

Which of the following is needed for the process of photosynthesis?

a)

Water

b)

Oxygen

c)

Starch

d)

Carbon dioxide

3.

Chlorophyll is:

a)

The substance that makes plants green.

b)

Found inside the chloroplast cells.

c)

Used to absorb energy from the sun.

d)

All of the above.

4.

1.


What are the reactants of cellular respiration in plants?

a)

carbon dioxide and water

b)

glucose and carbon dioxide

c)

the reactants of the electron transport chain

d)

oxygen and glucose

5.

Why are plants considered autotrophs

a)

They make their own food

b)

They provide food for others

6.

What are the products of photosynthesis?

a)

Glucose

b)

sunlight

c)

water

7.
The main source of energy for all life comes from ____.
a)
the Earth
b)
the moon
c)
the sun
d)
the food we eat/make
8.

What is produced as a result of photosynthesis?

a)

glucose and chlorophyll

b)

water and light energy

c)

glucose and oxygen

d)

carbon dioxide and water

9.
Which of the following is the correct equation for PHOTOSYNTHESIS?
a)
CO2 + light + H2O --> O2 + Sugar
b)
CO2 + sugar + H2O --> O2 + light
c)
O2 + light + H2O --> CO2 + Sugar
d)
CO2 + O2 + H2O --> Light+ Sugar
10.
Evidence of a chemical reactions is anything that shows - 
a)
a new substance has formed
b)
a solid dissolved in a liquid
c)
interaction between 2 gases
d)
a change in the state of matter
11.
One of the signs of a chemical reaction taking place is:
a)
Bubbles are produced 
b)
Reactants are not combining
c)
Products are not forming
d)
Color is not changing
12.
Which of the following describes a precipitate?
a)
a liquid forms when a block of metal is heated
b)
a solid forms when one liquid is poured into another
c)
a gas forms when a solid is placed in a liquid
d)
bubbles form when an acid is poured on a rock
13.
Which is NOT an indication of a chemical change?
a)
temperature change
b)
formation of a precipitate
c)
shape change
d)
production of light
14.

What is the evidence that a chemical change has taken place?

a)

gas production

b)

change in energy

c)

change in color

d)

production of a precipitate

15.

Identify the change as physical or chemical

a)

physical

b)

chemical

16.

Identify the change as physical or chemical.

a)

physical

b)

chemical

17.

What is one way in which all living things on Earth are alike?

a)

All living things have hair.

b)

All living things are made of cells.

c)

The cells of all living things have chloroplast.

d)

All living things can move.

18.
This organelle is a rigid outer layer that protects plant cells.
a)
Cell Membrane
b)
Cell Wall
c)
Nucleus
d)
Chloroplast 
19.

The _____________ stores food, water, wastes, and other materials in both plant and animal cells.

a)

Vacuole

b)

Mitochondria

c)

Cytoplasm

d)

Nucleus

20.
An organelle that captures energy from the sunlight in order to use it to produce food in plant cells is ______________.
a)
Chromatin
b)
Chloroplast
c)
Cytoplasm
d)
Cell Membrane
21.

The _____________ is a gel-like fluid that fills plant and animal cells. It holds the organelles in place and gives each cell its shape.

a)

Cytoplasm

b)

Cell Membrane

c)

Cell Wall

d)

Chloroplast

22.

What can only be found in plant cells?

a)

Cell membrane

b)

Vacuole

c)

Chloroplast

d)

Mitochondria

23.

What is the main difference between prokaryotic and eukaryotic cells?

a)

Prokaryotic cells are found only in multicellular organisms

b)

Eukaryotic cells are found only in unicellular organisms

c)

Eukaryotic cells have a nucleus and prokaryotic cells do not

d)

Prokaryotic cells have DNA and eukaryotic cells do not

24.
All organisms are made of:
a)
organelles
b)
cytoplasm
c)
DNA
d)
cells
25.
Which terms best describe autotrophs?
a)
Plants; producers
b)
Animals; producers
c)
Plants; consumers
d)
Animals; consumers
26.
Which terms best describe heterotrophs?
a)
Plants; producers
b)
Animals; producers
c)
Plants; consumers
d)
Animals; consumers
27.
From where do autotrophs obtain their energy?
a)
The sun
b)
Other organisms
28.

If it is Winter in the Northern hemisphere, what is it in the Southern hemisphere?

a)

Winter

b)

Spring

c)

Summer

d)

Fall

29.

What motion causes day/night?

a)

Rotation

b)

Revolution

c)

Tilt

d)

Orbit

30.

What are the reasons for the seasons?

a)

Earth's tilt and rotation

b)

Earth's rotation and revolution (orbit)

c)

Earth's tilt and revolution (orbit)

d)

Earth's tilt and resolution

31.
Why is it warmer in the summer?
a)
Closer to the sun
b)
More direct light from Earth's tilt
c)
Stronger light from the sun
d)
Earth spins slower
32.
At position A, which hemisphere would have summer?
a)
Northern hemisphere
b)
Southern hemisphere
33.
Which season is taking place in the Northern Hemisphere in Position 1?
a)
Winter
b)
Spring
c)
Summer
d)
Fall
34.
Which season is taking place in the Northern Hemisphere in Position 3?
a)
Winter
b)
Spring
c)
Summer
d)
Fall
35.

What season is it for us in the Northern Hemisphere in the picture?

a)

Summer

b)

Winter

c)

Fall

d)

Spring

36.

The imaginary line through the center of the Earth that it spins on is called the:

a)

Axis

b)

Equator

c)

Latitude

d)

Longitude

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