Moving Cellular Material Key Concepts Builder

Name
Date
Class
Chapter 2 Lesson 3
Key Concepts Builder
LESSON 3
Moving Cellular Material
Key Concept How do materials enter and leave cells?
Directions: Write a short description of how each transport system works. Under each description, add a simple
diagram that shows how the process occurs in a cell. Include arrows.
Passive Transport
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
Diffusion
Osmosis
Facilitated Diffusion
Description:
Description:
Description:
Diagram:
Diagram:
Diagram:
Active Transport
Endocytosis
Exocytosis
Description:
Description:
Diagram:
Diagram:
Cell Structure and Function
55
Name
Date
Class
ChaptChapter 2 Lesson 3erChapter 2
Key Concepts Builder
LESSON 3
Moving Cellular Material
Key Concept How do materials enter and leave cells?
Directions: On each line, write the term from the word bank that correctly completes each sentence. Each term is
used only once.
1. the movement of substances from an area of
higher concentration to an area of lower
concentration
A. semipermeable
B. passive transport
C. diffusion
2. transport proteins that carry large molecules, such
as sugar molecules, through a cell membrane
3. the state a substance is in when the
concentration of the substance is the same on
both sides of a cell membrane
4. when a cell takes in a substance by surrounding
it with the cell membrane
D. equilibrium
E. osmosis
F. facilitated diffusion
G. transport proteins
H. carrier proteins
I. channel proteins
5. the diffusion of water molecules only
J. active transport
6. when molecules pass through a cell membrane
K. endocytosis
using special proteins
7. transport proteins that form pores through a cell
membrane
8. the movement of substances through a cell
membrane by using the cell’s energy
9. proteins that assist with the transport of
molecules through a cell membrane
10. when a cell’s vesicles release their contents
outside the cell
11. what a cell membrane is because it allows only
certain substances to enter or leave a cell
12. the movement of substances through a cell
membrane without using the cell’s energy
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Cell Structure and Function
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
L. exocytosis
Name
Date
Class
Chapter 2 Lesson 3
Key Concepts Builder
LESSON 3
Moving Cellular Material
Key Concept How do materials enter and leave cells?
Directions: Answer each question on the lines provided. Use complete sentences.
1. What is active transport?
2. What is endocytosis?
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
3. What is exocytosis?
4. How does a cell use endocytosis to form a vesicle?
5. How does a cell use exocytosis to release the contents of a vesicle outside the cell?
6. What role does cellular energy play in active transport?
Cell Structure and Function
57
Name
Date
Class
Chapter 2 Lesson 3
Key Concepts Builder
LESSON 3
Moving Cellular Material
Key Concept How does cell size affect the transport of materials?
Relationship Between Surface Area and Volume
Surface Area
6
24
54
Volume
1
8
27
6 to 1
3 to 1
2 to 1
Ratio of Surface Area to Volume
Directions: The table above shows the surface area and volume of sample objects. Use the table to help answer
each question. Use complete sentences.
1. What happens to the volume of an object as its surface area increases?
2. What is the changing relationship between volume and surface area as an object
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
gets bigger?
3. What problem would unlimited cell growth pose for a cell?
4. Why can a cell not survive under conditions of unlimited growth?
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Cell Structure and Function