Molecule Movement And Cells

Question 1

What are the types of molecule movement?

Answer 1

Passive transport
Active transport
Endocytosis
Exocytosis

Question 2

Passive transport

Answer 2

• No energy required

- Movement due to gradient to equalize it

Question 3

Types of passive transport

Answer 3

Diffusion
Osmosis
Facilitated diffusion

Question 4

Blood cells in hypotonic solution

Answer 4

Swollen and Lysed

Question 5

Blood cells in hypertonic solution

Answer 5

Crenated

Question 6

What is facilitated diffusion?

Answer 6

It a differentially permeable membrane. Movement is through specific molecules and the channels are aquaporins (transport proteins) that facilitates water movement.

Question 7

Facilitated diffusion requires energy.

Answer 7

False

Question 8

Process of facilitated diffusion

Answer 8

• Protein binds to molecule
• Protein shape changes
• Molecule moves across membrane

Question 9

Active transport required energy

Answer 9

True

Question 10

Example of active transport

Answer 10

Sodium-Potassium pun across cell membrane

Question 11

Endocytosis

Answer 11

Involves movement of large materials across membrane into cells

Question 12

Types of endocytosis

Answer 12

Bulk phase

Receptor-mediated phase

Question 13

Which type of Endocytosis is specific?

Answer 13

Receptor-mediated

Question 14

Process of Endocytosis

Answer 14

• Membrane surrounds material
• Edges of membrane meet
• Edges fuse to form vesicles

Question 15

Forms of Endocytosis

Answer 15

Phagocytosis - Cell Eating

Pinocytosis - Cell Drinking

Question 16

What is Exocytosis?

Answer 16

Here, cell discharges large materials.

Question 17

Process of Exocytosis

Answer 17

• Vesicle moves near membrane
• Vesicle membrane fuses with main membrane
• Material is expelled