Download Chapter Review

Back
Print
Name
Class
Date
Skills Worksheet
Chapter Review
USING KEY TERMS
Complete each of the following sentences by choosing the correct term from the
word bank.
lipid
carbohydrate
consumer
heredity
homeostasis
producer
1. The process of maintaining a stable internal environment is known
as
.
2. Offspring resemble their parents because of
3. A
4. Starch is a
5. Fat is a
.
obtains food by eating other organisms.
and is made up of sugars.
that stores energy for an organism.
UNDERSTANDING KEY IDEAS
______ 6. Which of the following statements about cells is true?
a. Cells are the structures that contain all of the materials necessary
for life.
b. Cells are found in all organisms.
c. Cells are sometimes specialized for particular functions.
d. All of the above
______ 7. Which of the following statements about all living things is true?
a. All living things reproduce sexually.
b. All living things have one or more cells.
c. All living things must make their own food.
d. All living things reproduce asexually.
______ 8. Organisms must have food because
a. food is a source of energy.
b. food supplies cells with oxygen.
c. organisms never make their own food.
d. All of the above
______ 9. A change in an organism’s environment that affects the organism’s
activities is a
a. response.
c. metabolism.
b. stimulus.
d. producer.
Copyright © by Holt, Rinehart and Winston. All rights reserved.
Holt Science and Technology
29
It’s Alive!! Or Is It?
Back
Print
Name
Class
Date
Chapter Review continued
______10. Organisms store energy in
a. nucleic acids.
b. phospholipids.
c. lipids.
d. water.
______11. The molecule that contains the information about how to make
proteins is
a. ATP.
b. a carbohydrate.
c. DNA.
d. a phospholipid.
______12. The subunits of nucleic acids are
a. nucleotides.
b. oils.
c. sugars.
d. amino acids.
Short Answer
13. What is the difference between asexual reproduction and sexual
reproduction?
14. In one or two sentences, explain why living things must have air.
15. What is ATP, and why is it important to a cell?
Copyright © by Holt, Rinehart and Winston. All rights reserved.
Holt Science and Technology
30
It’s Alive!! Or Is It?
Back
Print
Name
Class
Date
Chapter Review continued
CRITICAL THINKING
16. Concept Mapping Use the following terms to create a concept map: cell,
carbohydrates, protein, enzymes, DNA, sugars, lipids, nucleotides, amino
acids, and nucleic acid.
Copyright © by Holt, Rinehart and Winston. All rights reserved.
Holt Science and Technology
31
It’s Alive!! Or Is It?
Back
Print
Name
Class
Date
Chapter Review continued
17. Analyzing Ideas A flame can move, grow larger, and give off heat. Is a flame
alive? Explain.
18. Applying Concepts Based on what you know about carbohydrates, lipids, and
proteins, why is it important for you to eat a balanced diet?
19. Evaluating Hypotheses Your friend tells you that the stimulus of music
makes his goldfish swim faster. How would you design a controlled
experiment to test your friend’s claim?
INTERPRETING GRAPHICS
The pictures below show the same plant over a period of 3 days. Use the pictures
below to answer the questions that follow.
Day 1
Day 2
Day 3
20. What is the plant doing?
21. What characteristic(s) of living things is the plant exhibiting?
Copyright © by Holt, Rinehart and Winston. All rights reserved.
Holt Science and Technology
32
It’s Alive!! Or Is It?
Back
Print
TEACHER RESOURCE PAGE
6. Answers will vary. Sample answer:
7.
8.
9.
10.
11.
12.
Decomposers cannot make their own
food, like producers can, so
decomposers consume dead
organisms.
amino acids
660 11 60 times
Answers will vary. Sample answer:
Green plants, algae, and some bacteria
need carbon dioxide gas as well as
oxygen. Without the carbon dioxide,
these organisms could not survive, and
other organisms could not rely on
them as a food source.
Answers will vary. Sample answer: A
cave provides shelter. An ant could be
food. A lake provides water.
Answers will vary. Sample answer: The
supply of ATP would decrease. A
decrease in ATP would cause a cell to
have less energy than it needs to carry
out its activities. Your body would
have to get ATP from other sources,
such as lipids.
Answers will vary. Sample answer:
They are all equally important. An
organism could not survive without
any one resource.
15.
16.
17.
18.
19.
Chapter Review
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
homeostasis
heredity
consumer
carbohydrate
lipid
D
B
A
B
C
C
A
In sexual reproduction, two parents
produce offspring that will share
characteristics of both parents. In
asexual reproduction, a single parent
produces offspring that are identical
to the parent.
14. Answers will vary. Sample answer:
Most organisms need oxygen from air
to release energy from food. Green
plants, algae, and some bacteria need
20.
21.
carbon dioxide from air for
photosynthesis.
ATP is the energy-containing molecule
in a cell. It provides fuel for all cellular
activities.
An answer to this exercise can be
found at the end of this book.
Answers will vary. Sample answer: The
flame is not alive. Although a flame
can move, grow, and give off heat, it
does not have all of the characteristics
of a living organism. For example, a
flame is not made up of cells and does
not contain DNA.
Answers will vary. Sample answer:
Cells use carbohydrates as a source of
energy and for energy storage. Proteins
have many functions. For example, the
protein hemoglobin helps deliver
oxygen throughout the body. Other
proteins called enzymes help speed up
chemical reactions. Lipids store energy
and form the membranes of cells. If
you eat an unbalanced diet, you may
lack one or more of these three
nutrients, and your cells will not be
able to function properly as a result.
Answers will vary. Sample answer: I
could put the goldfish bowl in a box,
making sure that the fish does not see
anything outside of the bowl. I would
make sure that the fish gets light, air,
and food in regulated amounts. Then,
I would observe the fish without the
stimulus of music and with the
stimulus of music to see what
happens.
The plant is bending toward the light
coming through the window.
Answers will vary. Sample answer: The
plant is sensing a stimulus (the light)
and is responding to it.
Reinforcement
AMAZING DISCOVERY
1. Answers will vary. Sample answer:
a. Does it have cells?
b. Does it respond to change?
c. Does it reproduce?
d. Does it have DNA?
e. Does it use energy?
f. Does it grow and develop?
Copyright © by Holt, Rinehart and Winston. All rights reserved.
Holt Science and Technology
83
It’s Alive!! Or Is It?