AnswersWI-Grade 8 Life Science AUnit Test

Unit Test — Unit test Answers

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Which statements best describe the second stage of cellular respiration? Select three options.

A
This stage happens in cytoplasm.
B
This stage happens in mitochondria.
C
Oxygen combines with small molecules.
D
Glucose is broken down.
E
Large amounts of energy are released.
2
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Which is a reactant in the cellular respiration reaction?

A
water
B
oxygen
C
mitochondria
D
cytoplasm
3

Which describes the role of carbon dioxide in photosynthesis?

A
It is a reactant, so it is released by the plant.
B
It is a product, so it is released by the plant.
C
It is a reactant, so it enters the plant.
D
It is a product, so it enters the plant.
4

At which stage is glucose broken into smaller molecules?

A
before cellular respiration begins
B
during the first stage of cellular respiration
C
during the second stage of cellular respiration
D
at the end of cellular respiration
5

What are the products of photosynthesis?

A
carbon dioxide and hydrogen
B
hydrogen, oxygen, and water
C
light energy, water, and carbon dioxide
D
oxygen and glucose
6

Which process involves mitosis and is used to produce new mushrooms or mold?

A
binary fission
B
sporulation
C
vegetative propagation
D
budding
7

A student wrote a sentence describing a difference between sexual reproduction and asexual reproduction.Asexual reproduction requires two parents, and sexual reproduction requires one parent.Which statement describes the student’s sentence?

A
It correctly describes the two processes.
B
It correctly describes asexual reproduction, but incorrectly describes sexual reproduction.
C
It incorrectly describes asexual reproduction, but correctly describes sexual reproduction.
D
It incorrectly describes the two processes.
8

Orange trees can reproduce through sexual reproduction. What can be known about the sexual reproduction of orange trees?

A
Sperm and eggs form zygotes.
B
Budding is involved.
C
Vegetative propagation forms zygotes.
D
Spores are involved.
9

Which statement describes an advantage of asexual reproduction?

A
Asexual reproduction results in variations in DNA.
B
Asexual reproduction causes less competition for resources.
C
Asexual reproduction is faster than sexual reproduction.
D
Asexual reproduction requires more energy than sexual reproduction.
10

What happens during telophase II? Select three options.

A
Chromosomes condense.
B
Chromosomes line up along the middle.
C
Spindle fibers disappear.
D
Nuclear membranes form.
E
Cytoplasm starts to divide.
11

In which step of meiosis do chromosomes first condense?

A
telophase I
B
telophase II
C
prophase I
D
prophase II
12

Which best describes two ways in which hydrogen is involved in photosynthesis?

A
1 - Hydrogen is stored in leaves of plants.2 - Hydrogen combines with carbon dioxide to make glucose.
B
1 - Hydrogen is stored in leaves of plants.2 - Hydrogen combines with oxygen to make water.
C
1 - Hydrogen enters plants as a component of water.2 - Hydrogen combines with carbon dioxide to make glucose.
D
1 - Hydrogen enters plants as a component of water.2 - Hydrogen combines with oxygen to make carbon dioxide.
13

Which process results in two identical cells?

A
meiosis
B
replication
C
fertilization
D
mitosis
14

Which stage of the cell cycle causes the pinching in of the cell membrane to create two individual cells?

A
mitosis
B
cytokinesis
C
interphase
D
metaphase
15

Eliana made a Venn diagram to compare the two stages of cellular respiration.

Question illustration
A
Energy is released.
B
Oxygen is used up.
C
Glucose is broken down.
D
Carbon dioxide is used up.

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