Cells and Energy Key Concept Builder

Name
Date
Class
Chapter 2 Lesson 4
Key Concept Builder
LESSON 4
Cells and Energy
Key Concept How does a cell obtain energy?
Directions: Label this diagram by writing the correct term from the word bank on each line. Some terms may be
used more than once.
carbon dioxide
light energy
oxygen
reactions in chloroplasts
reactions in cytoplasm
reactions in mitochondria
water
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
Cellular Respiration in Plant and Animal Cells
1. _______________
2. _______________
_______________
_______________
Glucose is broken down
into smaller molecules.
Smaller molecules are
processed releasing
energy.
3. ______________
______________
4. ______________
______________
Photosynthesis in Plant Cells
5. ______________
______________
6. ______________
______________
Cell Structure and Function
7. _______________
_______________
8. ______________
Light, energy, water, and
carbon dioxide react to
produce glucose (stored
energy).
______________
73
Name
Date
Class
Chapter 2 Lesson 4
Key Concept Builder
LESSON 4
Cells and Energy
Key Concept How does a cell obtain energy?
Directions: Complete the chart to explain the process of cellular respiration.
Create a diagram showing where glycolysis
occurs.
Step 2 Explain the production of ATP in
mitochondria and identify which molecule is
required for the process.
Create a diagram of a mitochondrion showing
what occurs in Step 2.
Alternate Step—Fermentation Explain what
fermentation is and compare the type of
fermentation used by humans to obtain energy
with the type used by some kinds of bacteria.
Create a diagram comparing the two types of
fermentation.
74
Cell Structure and Function
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
Step 1 Explain the process of glycolysis and tell
where it occurs.
Name
Date
Class
Chapter 2 Lesson 4
Key Concept Builder
LESSON 4
Cells and Energy
Key Concept How do some cells make food molecules?
Directions: On each line write the correct term from the word bank.
carbon dioxide
glucose
light energy
oxygen
water
Sun
1.
Chloroplast
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
2.
and 3.
Mitochondrion
4.
ATP (energy)
and 5.
Directions: Circle the term in parentheses that correctly completes each sentence.
6. In photosynthesis, light energy is absorbed by (water/chlorophyll) and
other pigments.
7. The chemical reactions of photosynthesis occur in organelles called
(chloroplasts/mitochondrion).
8. In photosynthesis, light energy, water, and (carbon dioxide/oxygen) are used
to make sugars.
9. Photosynthesis also produces (oxygen/carbon dioxide) that is released into
the atmosphere.
Cell Structure and Function
75
Name
Date
Class
Chapter 2 Lesson 4
Key Concept Builder
LESSON 4
Cells and Energy
Key Concept How does a cell obtain energy?
Directions: Use the diagram to complete the chart below. Write five questions for cellular respiration and five
questions for photosynthesis. Then trade with a partner and answer your partner’s questions.
Photosynthesis
Light
Energy
Carbon
Dioxide
Oxygen
Sugar
Water
Vapor
Respiration
Energy
Released
Question
Example: What is needed for respiration?
Answer
Sugar and oxygen are needed for respiration.
1.
2.
3.
4.
5.
76
Cell Structure and Function
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
Photosynthesis and Cellular Respiration