A - Lesson 1.2

Question 1

What are the 3 Major Divisions of a Cell? Illustrate the cell

Answer 1

1. Plasma membrane
2. Cytoplasm
3. Nucleus

Question 2

What are the 2 Regions of a cell?

Answer 2

1. Plasma membrane
2. Protoplasm

Question 3

Structural Components of a Cell:

primary barrier, enter and exit of different molecules.

Answer 3

Plasma Membrane

Question 4

water loving

water fearing

Answer 4

Hydrophilic / Hydrophobic

Question 5

Structural Components of a Plasma Membrane:

○ phosphate group
○ hydrophilic

Answer 5

Head Region

Question 6

Structural Components of a Plasma Membrane:

○ two fatty acids
○ hydrophobic chains

Answer 6

Tail Region

Question 7

Structural Components of a Plasma Membrane:

Phospholipids have a _____ model. Because of different molecules; ___, ___, ____.

Answer 7

Fluid Mosaic Model.

proteins, sugars, cholesterol

Question 8

__Structural Components of a Plasma Membrane__

Role of Lipid Bilayer:

allows certain molecules to move in and out of the cell

Answer 8

Selective Permiability

Question 9

Structural Components of a Plasma Membrane:

passageway of certain molecules.

Answer 9

Channel Proteins

Question 10

Structural Components of a Plasma Membrane:

change conformation to transport molecules.

Answer 10

Carrier Proteins