I. Objectives for section 7-2: The Plasma Membrane A.State the function of the cell membrane...
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![Page 1: I. Objectives for section 7-2: The Plasma Membrane A.State the function of the cell membrane B.Explain how proteins, carbohydrates, and cholesterol play.](https://reader036.fdocuments.in/reader036/viewer/2022062409/5697bfe91a28abf838cb6893/html5/thumbnails/1.jpg)
I. Objectives for section 7-2: The Plasma Membrane
A. State the function of the cell membrane
B. Explain how proteins, carbohydrates, and
cholesterol play a role in the plasma membrane
Section 2
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II. Plasma Membrane is a thin, flexible boundary between the cell and its environment
Cellular Structure and Function
A. Allows nutrients into and wastes to leave the cell
Section 2
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B. Selective Permeability: controlsmovement of substances into and out of cell
Cellular Structure and Function
C. Controls amount ofsubstances entering and leaving
the cell
Section 2
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D. Composed of phospholipid bilayer
Cellular Structure and Function
1. Composed of a glycerol backbone, two fatty acid chains, and a phosphate group
Section 2
2. Polar (partially charged) head and 2 nonpolar (no charge) tails
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Phospholipid bilayer
Section 2
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Phospholipid molecule
Lipid bilayer
Lipid bilayer makes up the cell membrane
E. Overall picture
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F. Fluid Mosaic Model
Cellular Structure and Function
1. Bilayer allows other molecules to “float” in membrane
Section 2
Transport protein
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2. Nonpolar tails on inside do not allow water-soluble substances to pass through easily
a. Allows cell to separate inside environment from the outside
b. Proteins are held in membrane in a similar fashion
Section 2
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A. Proteins act as a support structure
Cellular Structure and Function
III. Other components of plasma membrane
Section 2
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1. Receptor proteins transmit signals inside the cell
a. “intercellular communication”
Section 2
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2. Transport proteins: aid movement of substances into and out of cells
Section 2
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3. Marker proteins: attached to a carbohydrate on cell’s surface and advertise cell type
a. Will recognize foreign invaders including transplanted organs!!
Section 2
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Cellular Structure and Function
B. Cholesterol prevents fatty acid tails from sticking together
Section 2
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C. Carbohydrates identify chemical signals
Cellular Structure and FunctionSection 2
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Cellular Structure and FunctionSection 2
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1. A2. B3. C4. D
Cellular Structure and Function
A. identifiers
B. receptors
C. supporters
D. transporters
1. Which term describes the function of proteins
found on the outer surface of the plasma membrane?
Section 2 Formative Questions
Chapter
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1. A2. B3. C4. D
Cellular Structure and Function
Section 2 Formative Questions
A. phospholipids
B. proteins
C. carbohydrates
D. cholesterol molecules
2. Which component of the plasma membrane contributes to the fluidity of the plasma membrane?
Chapter
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1. A2. B3. C4. D
Cellular Structure and Function
Section 2 Formative Questions
3. What is the function of carbohydrates that stick out from the outer surface of the
plasma membrane?A. They give the cell shape and enable it to
move.B. They give the plasma membrane fluidity.C. They help the cell identify chemical signals.D. They hold the cell in place.
Chapter
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1. A2. B3. C4. D
Cellular Structure and Function
Standardized Test Practice
A. membrane proteinsB. transport proteinsC. the nonpolar tails in the middle of the
plasma membrane
D. the polar heads facing the inside and outside of the cell
4. What part of the plasma membrane makes it
difficult for water-soluble substances to move freely into and out of the cell?
Chapter
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1. A2. B3. C4. D
Cellular Structure and Function
A. identifiers
B. receptors
C. supporters
D. transporters
1. Which term describes the function of proteins
found on the outer surface of the plasma membrane?
Section 2 Formative Questions
Chapter
![Page 21: I. Objectives for section 7-2: The Plasma Membrane A.State the function of the cell membrane B.Explain how proteins, carbohydrates, and cholesterol play.](https://reader036.fdocuments.in/reader036/viewer/2022062409/5697bfe91a28abf838cb6893/html5/thumbnails/21.jpg)
1. A2. B3. C4. D
Cellular Structure and Function
Section 2 Formative Questions
A. phospholipids
B. proteins
C. carbohydrates
D. cholesterol molecules
2. Which component of the plasma membrane contributes to the fluidity of the plasma membrane?
Chapter
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1. A2. B3. C4. D
Cellular Structure and Function
Section 2 Formative Questions
3. What is the function of carbohydrates that stick out from the outer surface of the
plasma membrane?A. They give the cell shape and enable it to
move.B. They give the plasma membrane fluidity.C. They help the cell identify chemical signals.D. They hold the cell in place.
Chapter
![Page 23: I. Objectives for section 7-2: The Plasma Membrane A.State the function of the cell membrane B.Explain how proteins, carbohydrates, and cholesterol play.](https://reader036.fdocuments.in/reader036/viewer/2022062409/5697bfe91a28abf838cb6893/html5/thumbnails/23.jpg)
1. A2. B3. C4. D
Cellular Structure and Function
Standardized Test Practice
A. membrane proteinsB. transport proteinsC. the nonpolar tails in the middle of the
plasma membrane
D. the polar heads facing the inside and outside of the cell
4. What part of the plasma membrane makes it
difficult for water-soluble substances to move freely into and out of the cell?
Chapter