Aqa Cell Transport

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

Tags

NGSS.HS-LS2-3

This cell structure helps organisms maintain homeostasis by controlling what substances may enter or leave cells.

• vacuole
• nucleus
• cell membrane
• cell wall

Tags

NGSS.HS-LS1-3

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

• osmosis
• diffusion
• active transport
• facilitated diffusion

Passive transport requires no

• concentration gradients
• osmosis
• motion
• energy

Which of the following do NOT have cell walls?

• animal cells
• bacteria cells
• plant cells
• fungi

Which way would the purple molecules move through the semi permeable membrane?

• From the A side to the B side

• From the B side to the A side

• None of the purple molecules would move.

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.