M9 CELL MEMBRANE STRUCTURE AND FUNCTION

Question 1

Between the living machinery of the inner cell and the harsh condition of the outside world stands the cells ___________

Answer 1

Plasma Membrane

Question 2

as crucial as this barrier is surprisingly __________, push it and watch it move, poke hard enough and it might break and begin to regroup.

Answer 2

Flexible

Question 3

3. The molecules of the membrane naturally assembled in a _______________

Answer 3

Double Layer

Question 4

6. within these living molecules we also find different _______________ which do various things for the cell

Answer 4

Proteins

Question 5

4. because their tails _________________as their heads attracted

Answer 5

Repel Water

Question 6

5. throw in some ________________ and a few carbohydrates and you have the basic structure of a plasma membrane

Answer 6

Cholesterol

Question 7

7. for instance they receive _____________ from the world outside where they transport nutrients and waste

Answer 7

Signals

Question 8

8. so nature composes the membrane with the combination or __________________of different lipids carbohydrates and proteins

Answer 8

Mosiac

Question 9

9. and these molecules are ___________________ and they constantly move within the structure would like changing their positions.

Answer 9

Not Stationary

Question 10

10. The survival of all life rest at this veil of material supple membrane just _____________thick.

Answer 10

Two molecule

Question 11

Is also known as the plasma membrane

Answer 11

Cell Membrane

Question 12

Is a thin semi-permeable membrane that surrounds the cytoplasm of a cell.

Answer 12

Cell Membrane

Question 13

Made up of 2 layers of phospholipids

Answer 13

Lipid Bilayer

Question 14

1. Serves as a barrier that protects the cell from the extracellular environment.
2. Maintains balance in the interior of the cell by allowing certain substances into the cell while keeping other substances out.
3. For cell-to-cell communication
4. For structural support and help maintain its shape.​

Answer 14

Cell Membrane

Question 15

2 parts of Lipid Bilayer

Answer 15

1. hydrophilic Head
2. Hydrophobic Tails

Question 16

Makes the cell membrane semi permeable.

Answer 16

Lipid Bilayer

Question 17

• Dispersed between phospholipids
• Prevents rigidity of cell membrane.

Answer 17

Cholesterol

Question 18

• Found at the cell membrane surface
• For cell-to-cell recognition.
• Lipid + carbohydrate

Answer 18

Glycolipid

Question 19

Can be attached to phosphoglyceride lipid (Head) or to integral proteins.

Answer 19

Peripheral Protein

Question 20

• Move substances in and out of a cell.
• activate other proteins and enzymes.
• Cell-to-cell interaction interactions.

Answer 20

Peripheral Protein

Question 21

Are permanently embedded within the plasma membrane

Answer 21

Integral Protein

Question 22

Channel or transport molecules across the membrane.

Answer 22

Integral Protein

Question 23

2 Types of Integral Protein

Answer 23

• Transmembrane protein
• Monotopic proteins

Question 24

Act as a cell receptor

Answer 24

Glycoprotein

Question 25

3 Biomolecules (Macromolecules)

Answer 25

- Lipids - Proteins - Carbohydrates

Question 26

Allow passage of hydrophobic molecules and gases.

Answer 26

O2, CO2, CO, NO, Ethanol and benzene

Question 27

Do not allow passage of ions and large hydrophilic molecules.

Answer 27

Glucose, amino acids, Na ion, K ion, phosphate, ATP.