QUARTER 2 (2nd PPT) Transports Mechanisms in Cells

Question 1

It is the movement of ions and molecules across the cell membrane without requiring energy.

Answer 1

Passive transport

Question 2

is the movement of molecules across a membrane from a region of lower concentration to a region of higher concentration

Answer 2

Active Transport

Question 3

process resulting from random motion of molecules by which there is a net flow of matter from a region of high concentration to a region of low concentration.

Answer 3

Diffusion

Question 4

the spontaneous passage of water or other solvents through a semipermeable membrane

Answer 4

Osmosis

Question 5

Movement of large molecules in and out of the cell with the help of a transporting organelle in cells.

Answer 5

Vesicular Transport

Question 6

Movement of solutes to an area of high concentration to an area of low concentration

Answer 6

SIMPLE DIFFUSION

Question 7

Happens when there is a difference in the concentration of nonpolar solutes across a cell membrane.
Example
O2
CO2
Fatty acids

Answer 7

SIMPLE DIFFUSION IN CELLS

Question 8

Difference in concentration of polar solutes between 2 areas.
Example:
ions
glucose

Answer 8

FACILITATED DIFFUSION

Question 9

2 TYPES
1. Channel mediated diffusion
a. Leak Channel
b. Gated Channel
2. Carrier mediated diffusion

Answer 9

FACILITATED DIFFUSION

Question 10

The channel is always open

Answer 10

LEAK CHANNEL

Question 11

The channel is open when needed

Answer 11

GATED CHANNEL

Question 12

The channel is Opening changes shape

Answer 12

Carrier Mediated Diffusion

Question 13

Passive movement of solvent through a selectively permeable membrane

Answer 13

OSMOSIS

Question 14

The 2s OSMOSIS ACROSS A CELL MEMBRANE

Answer 14

Lipid bilayer
Aquaporin – Protein Channel

Question 15

Requires cellular energy
2 Types
Active Transport
Vesicular Transport

Answer 15

Active processes

Question 16

Movement of solute against the concentration gradient
2 Types
Primary Active transport
Secondary Active transport

Answer 16

ACTIVE TRANSPORT

Question 17

Uses transmembrane channels known as ions pumps Move against the concentration.
Low concentration to high concentration
Require energy (ATP)

Answer 17

Primary Active Transport

Question 18

ATP will attach and stimulate/ change the shape of the ion pump
ATP will allow 3 Na ion into the pump
ATP will change into ADP and P
ADP will be released back into the cytoplasm as P will remain attach to the pump

Answer 18

Primary Active Transport – Ion pump

Question 19

Na ions will travel out of the pump
P will attract 2 K ions into the pump
K ions will travel out of the pump
P will be released
Pump will go back to its original shape.

Answer 19

Primary Active Transport – Ion pump

Question 20

High to low concentration, will produce energy that will let the movement of a molecule from low concentration to high concentration

Answer 20

Secondary Active Transport

Question 21

2 Types of Secondary Active Transport

Answer 21

Antiport
Symport

Question 22

2 substances are move in the opposite direction

Answer 22

Antiport

Question 23

2 substances are move in the same direction

Answer 23

Symport/ Symporter

Question 24

Transport Vesicle a membranous sac that is found in the cytoplasm
Movement of large molecules (proteins and polysaccharides)
2 types
Exocytosis
Endocytosis

Answer 24

Vesicular Transport

Question 25

Use of vesicles to move molecules out of the cell

Answer 25

Vesicular Transport - Exocytosis

Question 26

3 types
Phagocytosis
Pinocytosis
Receptor mediated Endocytosis

Answer 26

Vesicular Transport - Endocytosis

Question 27

Use of vesicles to move large molecules inside the cell

Answer 27

Phagocytosis

Question 28

Use of vesicles to move interstitial fluid with solutes (small molecules mixed with water) inside the cell.

Answer 28

Pinocytosis

Question 29

Uses receptors (carbohydrates) attached in the lipid bilayer to move certain/special molecules into the cells

Answer 29

Receptor Mediated Endocytosis