Crossing The Plasma Membrane

Question 1

Plasma membrane

Answer 1

2 layers phospholipid molecules

External environment and internal

Question 2

Phospholipid

Answer 2

Makes membrane impermeable to water particles, ions, polar molecules

Question 3

Lipid

Answer 3

Soluble substances can diffuse through phospholipid bilayer

Question 4

2 types of diffusion

Answer 4

Facilitated and simple

Question 5

Rate of diffusion is effected by

Answer 5

Concentration, temp, particle size

Question 6

Liquid

Answer 6

Solute

Question 7

Particles

Answer 7

Solvent

Question 8

Carrier protein

Answer 8

Transport specific substances through intracellular compartments into extracellular fluid

Question 9

Hypertonic

Answer 9

Solute concentration is higher than that inside the cell

Question 10

Hypotonic

Answer 10

Solute concentration is lower than that of solutes inside the cell.

Question 11

What uses energy

Answer 11

Active Transport

Question 12

Diffusion

Answer 12

Passive process in which purifies move down a conc Gradient, from low to high conc

Question 13

Chemical properties of water

Answer 13

Cohesive
High surface tension
High heat capacity

Question 14

Fluid mosaic model

Answer 14

Proteins, lipids, carbohydrates, cholesterol

Question 15

Glycoproteins

Answer 15

Cell recognition antigen and communication

Carbohydrates

Question 16

Cholesterol

Answer 16

Stabilises lipid membrane by wedging itself between the phospholipid tail and preventing phospholipid from aggregating
This helps to keep it fluid
Keeps membrane less fluid in high temps and more fluid in low temps so it doesn’t freeze

Question 17

Phospholipid x2

Answer 17

Hydrophilic phosphate head

Hydrophobic fatty acid tail

Question 18

Isotonic solution

Answer 18

Solute concentration is the same as that of intracellular fluid

Question 19

Turgid

Answer 19

Swells up

Question 20

Plasmolysis

Answer 20

Cell shrinks

Question 21

Crenation

Answer 21

Shrink

Question 22

Carbohydrates

Answer 22

Sugar chains glucose

Question 23

Protein

Answer 23

Amino acids

Question 24

Nucleic acids

Answer 24

Nucleotide

Chonp

Question 25

Phagocytosis

Answer 25

Eating

E.g in the immune system

Question 26

Pinocytosis

Answer 26

Drinking

Absorptive cells of s.i

Question 27

Light dependent

Answer 27

Light energy
Water—————> hydrogens ions + oxygen + ATP
Chlorophyll

Question 28

Light Independent

Answer 28

Hydrogen ions + ATP + carbon dioxide —> glucose + water + ADP

Question 29

Which is better aerobic or anaerobic

Answer 29

Aerobic is more efficient as it completely breaks down the glucose molecule and creates the maximum amount of ATP

Question 30

Compensation point

Answer 30

Occurs at the same rate