Lesson 3 | Moving Cellular Material - Schoolwires
Lesson 3 | Moving Cellular Material
Student Labs and Activities
Launch Lab Content Vocabulary Lesson Outline MiniLab Content Practice A Content Practice B Math Skills School to Home Key Concept Builders Enrichment Challenge Skill Practice
Page
46 47 48 50 51 52 53 54 55 59 60 61
Copyright ? Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
Cell Structure and Function
45
Name
Date
Class
Launch Lab
LESSON 3: 5 minutes
What does the cell membrane do?
All cells have a membrane around the outside of the cell. The cell membrane separates the inside of a cell from the environment outside a cell. What else might a cell membrane do?
Procedure
1. Read and complete a lab safety form.
2. Place a square of wire mesh on top of a beaker.
3. Pour a small amount of birdseed on top of the wire mesh. Record your observations below.
Data and Observations
Copyright ? Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
Think About This
1. What part of a cell does the wire mesh represent?
2. What happened when you poured birdseed on the wire mesh?
3.
Key Concept How do you think the cell membrane affects materials that enter
and leave a cell?
46
Cell Structure and Function
Name
Date
Class
Content Vocabulary
LESSON 3
Moving Cellular Material
Directions: Write the correct term in the boxes to the right of each definition. Then use the letters in the numbered boxes to spell a seventh term.
active transport facilitated diffusion
diffusion osmosis
endocytosis passive transport
exocytosis
1. occurs with the help of transport proteins
13
9
2. movement through a cell's membrane
without using the cell's energy
10
7
3. movement through a cell's membrane
that requires energy
5
4. when a vesicle releases its contents outside of a cell
8
6
5. movement of substances from higher to lower concentration
11
2
6. diffusion of water molecules
4
7. is the process during which a cell takes in a substance by surrounding it with the cell membrane.
Copyright ? Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
Cell Structure and Function
47
Name
Date
Class
Lesson Outline
LESSON 3
Moving Cellular Material
A. Passive Transport
1. A cell membrane is certain substances to enter or leave a cell.
, which means that it allows only
2. Passive transport is the movement of substances through a cell membrane without
using the cell's
.
B. Diffusion
1. Diffusion is the movement of substances from an area of
concentration to an area of
concentration.
2. Usually diffusion continues through a membrane until the
membrane.
of a substance is the same on both sides of the
C. Osmosis--The Diffusion of Water
1. Osmosis is the diffusion of membrane.
molecules only through a
2. If the concentration of water in the air surrounding a plant is less than the concentration of water inside the plant's vacuoles, water will diffuse into the
until the concentrations of water are equal.
3. Facilitated diffusion allows molecules to pass through a cell membrane using
proteins.
a. Carrier proteins carry
through the cell membrane.
b. membrane.
proteins allow ions to pass through the cell
D. Active Transport
1. Active transport uses the cell's through a cell membrane.
to move substances
2. Active transport moves substances from areas of
concentration to areas of
concentration.
Copyright ? Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
48
Cell Structure and Function
Name
Date
Class
Lesson Outline continued
3. A cell uses with the cell membrane.
to take in a substance by surrounding it
4. A cell's vesicles release their contents outside the cell
during
.
E. Cell Size and Transport
1. For a cell to survive, its surface area must be large compared to
its
.
2. As a cell
, its volume increases faster than its surface area.
Copyright ? Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
Cell Structure and Function
49
................
................
In order to avoid copyright disputes, this page is only a partial summary.
To fulfill the demand for quickly locating and searching documents.
It is intelligent file search solution for home and business.
Related download
- moving cellular materials sawyerscience
- chapter 10 lesson 3 cell structure and function
- 2 3 science notebook moving cellular material answers
- mrs parsiola s homepage home
- lesson 3 moving cellular material
- 2 3 science notebook moving cellular material
- a chapter 3 cell processes sawyerscience
- lesson 3 moving cellular material schoolwires
- reading essentials c 2 3 moving cellular material
- 2 3 outline moving cellular material answers
Related searches
- algebra 1 lesson 3 8
- lesson 3 problem solving practice answers
- ces lesson 3 problem solving
- lesson 3 darwin s theory of natural selection
- content practice lesson 3 blood
- lesson 3 contact practice a
- lesson 3 humans and ecosystems
- lesson 3 2 compute with multi digit decimals
- lesson 3 uniting the colonists
- lesson 3 1
- lesson 3 1 can you model valence electrons
- the physical world lesson 3 earths water