TRANSPORT

Question 1

Transport definition

Answer 1

Moving molecules in and out of a cell through the cell membrane.

Question 2

Passive Transport definition

Answer 2

Transport of molecules that requires no ATP, always goes down a concentration gradient (from a high conc. to a low conc.)

Question 3

What are the 3 types of passive transport?

Answer 3

1. Diffusion 2. Osmosis 3. Facilitated diffusion

Question 4

Osmosis definition

Answer 4

The movement of water from an area of high concentration to an area of low concentration through a semi permeable membrane

Question 5

Animal cell in a hypotonic solution

Answer 5

The cell is lysed (burst) because all the water is entering the cell, where more solutes are present

Question 6

Hypotonic solution definition

Answer 6

The solution has a low concentration of solutes and a high concentration of water

Question 7

Plant cell in hypotonic solution

Answer 7

Water moves into the cell, due to more solutes present there, causing the cell membrane to push against the wall making it turgid

Question 8

Isotonic solution

Answer 8

A solution with the same solution and water concentration as the cell/other solution

Question 9

Animal cell in an isotonic solution

Answer 9

The cell remains the same

Question 10

Plant cell in an isotonic solution

Answer 10

The cell remains the same

Question 11

Hypertonic solution

Answer 11

Solution with a high concentration of solutes and a low concentration of water

Question 12

Animal cell in a hypertonic solution

Answer 12

The cell shrivels due to the water within the cell moving out towards the solutes

Question 13

Plant cell in a hypertonic solution

Answer 13

The cell membrane is plasmolysed (permanently pulled away from the cell), due to the water within the cell moving out towards the solutes, though the cell wall remains intact

Question 14

Active transport definition

Answer 14

The movement of molecules from an area of high concentration to an area of low concentration, requires energy