Biology TEKS 5.C - Passive Transport

This cellular process occurs in the plasma membrane, and it is critical for homeostasis, as it controls the movement of molecules in and out of the cell.

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TX.112.42.C.5.C.

Part of the cell that is primarily composed of Phospholipids and Protein Channels, and controls what comes in and out of the cell.

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TX.112.42.C.5.C.

The cell membrane helps to control the movement of molecules in and out of the cell. What are other names for the Cell Membrane?

• Phospholipid Bilayer

• Nuclear Membrane

• Protein Bilayer

• Plasma Membrane

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TX.112.42.C.5.C.

Label the Model with the correct parts.

a

b

c

Hydrophobic Tail

Phospholipid Bilayer

Hydrophilic Head

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TX.112.42.C.5.C.

Label the Proteins in the Diagram.

a

b

Carbohydrate Protein

Phospholipid Protein

Integral Protein

Peripheral Protein

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TX.112.42.C.5.C.

Type of transport of molecules that moves molecules down the concentration gradient, and no energy is required. Examples: Diffusion, Facilitated Diffusion and Osmosis.

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TX.112.42.C.5.C.

Identify and Label each example of Passive Transport.

a

b

c

Diffusion

Osmosis

Facilitated Diffusion

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TX.112.42.C.5.C.

This example of Passive Transport allows small molecules like oxygen and carbon dioxide to pass through the cell membrane. Molecules move from High to Low Concentration.

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TX.112.42.C.5.C.

This example of Passive Transport uses Channel Proteins or Carrier Proteins to move molecules from High Concentration to Low Concentration. Glucose moves into the cell by this form of transport.

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TX.112.42.C.5.C.

This example of Passive Transport moves water through the cell membrane (semi-permeable) from an area of High concentration to an area of Low concentration.

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TX.112.42.C.5.C.