AQA Biology Paper 1- Transport in Cells

Osmosis is the movement of _____ across a membrane.

• food
• energy
• oxygen
• water

Which is true about active transport?

• requires energy

• does not require energy

• moves substances down the concentration gradient

• moves material from high to low concentration

The concentration of water is higher in the soil than in plant root cells. Water moves into root cells of a plant by...

• Facilitated Diffusion
• Simple Diffusion
• Active Transport
• Osmosis

Due to the higher concentration of oxygen in the air than your blood, oxygen goes from the lungs into the red blood cells by....

• Facilitated Diffusion
• Simple Diffusion
• Active Transport
• Osmosis

The dispersal of ink in a breaker of water is an example of 

• osmosis
• diffusion
• active transport
• facilitated diffusion

What does it mean that a cell membrane is semipermeable?

• It allows all substances inside.
• It allows some substances inside.
• It allows no substances inside.

If there is 5 percent water inside a cell and 5 percent water outside a cell

• more water will move inside the cell
• more water will move outside the cell
• there will be no net movement of water cells
• there will be no movement of water

Tags

NGSS.MS-LS2-3

The movement of molecules against a concentration gradient

• simple diffusion
• facilitated diffusion
• active transport
• osmosis

How do the particles move in diffusion?

• From a region of low concentration to a region of high concentration

• From a region of high concentration to a region of low concentration

• From a region of low concentration to a region of low concentration

• From a region of high concentration to a region of high concentration

What hapens to the concentration of oxygen in the body cells when you exercise?

• Increase

• Decrease

• Remain constant

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3