Chapter 3- Cellular Transportation

Question 1

What are the two types of cellular transport?

Answer 1

Active and passive

Question 2

What is the difference between active and passive transport?

Answer 2

Active transport- uses energy

Passive transport- doesn’t need energy

Question 3

What are the different types of passive transport

Answer 3

Diffusion
Osmosis
Facilitated diffusion

Question 4

Describe what is diffusion?

Answer 4

The tendency of particles to move from an area of higher concentration to an area of low concentration and spread out so they are evenly distributed

Question 5

What is osmosis?

Answer 5

Diffusion of water particles across a semi permeable membrane moving from an area of high concentration to low concentration

Question 6

What is facilitated diffusion

Answer 6

Diffusion where molecules diffuse across the cell membrane with assistance of transport proteins. The particles move from an area of high concentration to low concentration

Question 7

What are the requirements for active transport?

Answer 7

• requires energy (ATP)

- substances move from areas of low concentration to high concentration

Question 8

What are the types of active transport?

Answer 8

Endocytosis and exocytosis

Question 9

What is endocytosis?

Answer 9

The cell transports the molecules (such as proteins) by engulfing them

Question 10

What are the two processes of endocytosis

Answer 10

Phagocytosis- the plasma surrounds the macromolecule and buds off to form a phagosome (food molecule)

Pinocytosis - engulf drops of fluid by pinching in and forming vesicles

Question 11

What is exocytosis?

Answer 11

Materials are exported out of the cell vis secretory vesicles. The Golgi body packages macromolecules into transport vesicles that fuse with the plasma membrane. This fusion causes the vesicles to spill its contents out of the cell