M9: Cell Membrane Structure

Question 1

1.Between the living machinery of the inner cell and the harsh condition of the outside world stands the cells _____________

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.
3. The molecules of the membrane naturally assembled in a _______________
4. because their tails _________________as their heads attracted
5. throw in some ________________ and a few carbohydrates and you have the basic structure of a plasma membrane
6. within these living molecules we also find different _______________ which do various things for the cell
7. for instance they receive _____________ from the world outside where they transport nutrients and waste
8. so nature composes the membrane with the combination or __________________of different lipids carbohydrates and proteins
9. and these molecules are ___________________ and they constantly move within the structure would like changing their positions.
10. The survival of all life rest at this veil of material supple membrane just _____________thick.

Answer 1

1. plasma membrane
2. flexible
3. double layer
4. repel water
5. cholesterol
6. proteins
7. signals
8. mosaic
9. non stationary
10. two molecule

Question 2

Is also known as the plasma membrane

Answer 2

Cell Membrane

Question 3

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

Answer 3

Cell Membrane

Question 4

1. Serves as a barrier that protects the cell from the extracellular environment.

Answer 4

Cell Membrane

Question 5

2. Maintains balance in the interior of the cell by allowing certain substances into the cell while keeping other substances out.

Answer 5

Cell Membrane

Question 6

3. For cell-to-cell communication

Answer 6

Cell Membrane

Question 7

4. For structural support and help maintain its shape.​
   - serves as a base of attachment for the cytoskeleton in some organisms and the cell wall in others

Answer 7

Cell Membrane

Question 8

cell membrane > B__________ (m___________) > L____, P_____ and C_____

Answer 8

cell membrane > Biomolecules (macromolecules) > lipid, protein and carbohydrates

Question 9

lipids
1. lipid B_________
2. C_________
3. G___________

Answer 9

lipids
1. lipid bilayer
2. cholesterol
3. glycolipids

Question 10

proteins
1. P________ membrane proteins
2. I__________ membrane proteins
3. G____________

Answer 10

1. Peripheral membrane proteins
2. Integral membrane proteins
3. Glycoproteins

Question 11

Made up of 2 layers of phospholipids

Answer 11

1. Lipid Bilayer

Question 12

2 Parts
1. Hydrophilic head
2. Hydrophobic tails

Answer 12

1. Lipid Bilayer

Question 13

2 Parts
1. hydro______head
2. Hydro______ tails

Answer 13

2 Parts
1. Hydrophilic head
2. Hydrophobic tails

Question 14

Function
Makes the cell membrane semi permeable.

Answer 14

1. Lipid Bilayer

Question 15

it is a polar covalent compound

Answer 15

hydrophilic head

Question 16

made of phosphate and glycerol

Answer 16

hydrophilic head

Question 17

a non polar covalent compound

Answer 17

hydrophobic tail

Question 18

made of saturated fatty acid and unsaturated fatty acid

Answer 18

hydrophobic tail

Question 19

Allow passage of hydrophobic molecules and gases.

Answer 19

lipid bilayer

Question 20

examples of hydrophobic molecules and gases

O2, CO2, CO, NO, E_________ and B_____

Answer 20

Example:
O2, CO2, CO, NO, Ethanol and benzene

Question 21

Do not allow passage of ions and large hydrophilic molecules.

Answer 21

lipid bilayer

Question 22

Do not allow passage of ions and large hydrophilic molecules.

Example:
G______, amino acids, Na ion, K ion, p___________ , ATP.

Answer 22

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

Question 23

Dispersed between phospholipids

Answer 23

2. Cholesterol

Question 24

Prevents rigidity of cell membrane.

Answer 24

2. Cholesterol

Question 25

Found at the cell membrane surface

Answer 25

3. Glycolipid

Question 26

Lipid + carbohydrate

Answer 26

3. Glycolipid

Question 27

For cell-to-cell recognition.

Answer 27

3. Glycolipid

Question 28

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

Answer 28

1. Peripheral Protein

Question 29

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

Answer 29

1. Peripheral Protein

Question 30

Are permanently embedded within the plasma membrane

Answer 30

2. Integral Protein

Question 31

2 Types of integral protein
T___________ protein
M_______proteins

Answer 31

2 Types
Transmembrane protein
Monotopic proteins

Question 32

Function
Channel or transport molecules across the membrane.

Answer 32

2. Integral Protein

Question 33

attached to the protein or integral protein

Answer 33

2. Glycoprotein

Question 33

Act as a cell receptor

Answer 33

2. Glycoprotein