Q2 Lesson 1 Structural Components of the Cell Membrane and Its Function

Question 1

What are the three main parts of a cell

Answer 1

Cell Membrane, Cytoplasm, Nucleus

Question 2

What is a flexible collection of materials (not stationary)?

Answer 2

Fluid Mosaic

Question 3

Thin semi-permeable membrane that surrounds the cytoplasm

Answer 3

Cell Membrane

Question 4

First two purposes of the Cell Membrane

Answer 4

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 (MATS IN & OUT)

Question 5

Third and fourth purposes of the Cell Membrane

Answer 5

3. For cell-to-cell communication
4. For structural support & help maintain its shape

Question 6

Cell Membrane is B_______ (Macromolecules)

Answer 6

Biomolecules

Question 7

3 types of Biomolecules

Answer 7

Proteins, Lipids, Carbohydrates

Question 8

3 types of Proteins

Answer 8

1. Peripheral Membrane Protein
2. Integral Membrane Protein
3. Glycoproteins

Question 9

3 types of Lipids

Answer 9

1. Lipid Bilayer
2. Cholesterol
3. Glycolipids

Question 10

2 types of Carbohydrates

Answer 10

1. Glycolipid
2. Glycoprotein

Question 11

Type of lipid that is made up of 2 layers of phospholid

Answer 11

Lipid Bilayer

Question 12

Part of the lipid bilayer (hydrophilic, polar covalent compound, soluble to H2O)

Answer 12

Hydrophilic Head

Question 13

Part of the lipid bilayer (phosphate glycerol)

Answer 13

Hydrophilic Head

Question 14

Part of the lipid bilayer (hydrophobic, non-polar covalent compound,

Answer 14

Hydrophobic Tail

Question 15

Part of the lipid bilayer (saturated, unsaturated fatty acid)

Answer 15

Hydrophobic Tail

Question 16

Lipid Bilayer allows the passage of which molecules?

Answer 16

O2, CO2, CO, NO, Benzene, Ethanol (easiest)

Question 17

Lipid Bilayer does not allow the passage of which molecules?

Answer 17

Glucose, amino acids, Na Ion, K ion, Phosphate, ATP

Question 18

Type of lipid that is dispersed between the phospholipid, supple & flexible (prevents the rigidity of the cell)

Answer 18

Cholesterol

Question 19

Type of lipid that is found at the cell membrane surface/HEAD

Answer 19

Glycolipid

Question 20

Lipid + Carbohydrate (used for cell to cell recognition)

Answer 20

Glycolipid

Question 21

Type of protein that can be attached to phospoglyceride lipid (HEAD) or to integral protein

Answer 21

Peripheral Protein

Question 22

3 purposes of the Peripheral Protein

Answer 22

1. Moves substances in and out of the cell
2. Activate other proteins & enzymes
3. Allows cell to cell interaction

Question 23

Type of protein that is PERMANENTLY embedded within the plasma membrane

Answer 23

Integral Protein

Question 24

Type of Integral Protein that allows channel or transport of molecules across the membrane (2 layers)

Answer 24

Transmembrane protein

Question 25

Type of Integral Protein where Glycoprotein attaches (1 layer)

Answer 25

Monotopic protein

Question 26

Type of protein that acts as a cell receptor

Answer 26

Glycoprotein

Question 27

Glycolipid is attached to?

Answer 27

Hydrophilic Head

Question 28

Glycoprotein is attached to?

Answer 28

Monotopic Protein