Unit 1.2 Transport Across Cell Membranes

Question 1

The cell membrane consists of ____________ and ________________________

Answer 1

Proteins,phospholipids

Question 2

The cell membrane is ______________ ______________

Answer 2

Selectively permeable

Question 3

What is passive transport

Answer 3

Passive transport occurs down a concentration gradient and does not require energy

Question 4

What is diffusion

Answer 4

Diffusion is the movement of molecules down a concentration gradient from a higher to a lower concentration

Question 5

What is osmosis

Answer 5

Osmosis is the movement of water molecules from a higher water concentration to a lower water concentration through a selectively permeable membrane

Question 6

What will the animal cell happen when the higher water concentration enters the cell

Answer 6

The cell will swells up and bursts

Question 7

What will the animal cell happen when the lower water concentration exits the cell

Answer 7

The cell shrinks

Question 8

What is active transport

Answer 8

Active transport requires energy for membrane proteins to move molecules and ions against the concentration gradient

Question 9

Is diffusion active or passive

Answer 9

Passive

Question 10

Is diffusion with or against concentration gradient

Answer 10

With concentration gradient

Question 11

What are the molecules of diffusion

Answer 11

Glucose,O2,CO2

Question 12

Is osmosis active or passive

Answer 12

Passive

Question 13

Is osmosis with or against concentration gradient

Answer 13

With concentration gradient

Question 14

What is the molecule of osmosis

Answer 14

Water

Question 15

Is active transport active or passive

Answer 15

Active

Question 16

Is active transport with or against concentration gradient

Answer 16

Active transport is against concentration gradient

Question 17

What are the molecules of active transport

Answer 17

Sodium,potassium