3.3 Cell Membrane

Question 0

Is a molecule composed of three basic parts that are a charged phosphate group, glycerol and two fatty acid chains.

Answer 0

Phospholipid

Question 1

Or the plasma membrane, forms a boundary between a cell and the outside environment and controls the passage of materials into and out of a cell.

Answer 1

Cell membrane

Question 2

Tell me the 3 part of the phospholipid:

Answer 2

Charged phosphate
Glycerol
2 acid fatty chains

Question 3

Which describes the arrangement of the molecules that make up a cell membrane.

Answer 3

Fluid mosaic model

Question 4

Which means it allows some, but not all, materials to cross.

Answer 4

Selective permeability

Question 5

Is a protein that detects a signal molecule and performs an action in response.

Answer 5

Receptor

Question 6

Tell me the 2 kinds of receptor:

Answer 6

Intracellular receptor (is like a puzzle)
Membrane receptor (located in the cell membrane and is like a nut)

Question 7

A molecule may cross the cell membrane and bind to an intracellular receptor and it means “within, or inside, a cell.”

Answer 7

Intercellular receptor

Question 8

A molecule that cannot cross the membrane may bind to a receptor in the cell membrane.

Answer 8

Membrane receptor

Question 9

How do intracellular receptors are differ from membrane receptors?

Answer 9

The intracellular receptor (is like a puzzle) is located inside and the membrane receptor (like a nut) and is locate in the middle.

Question 10

These molecules serve diverse functions, here are a few 2 examples:

Answer 10

Cholesterol molecules strengthen the cell membrane.

Carbohydrates attached to membrane proteins serve as identification tags.