Unit 4: 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

Cells need to bring in molecules to carry out cellular processes. Often, this requires moving the molecules across the cell membrane against the concentration gradient. How do these molecules get into the cell?

• passive transport by diffusion

• active transport using ATP

• passive transport by osmosis

• 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

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 food coloring in a beaker of water is an example of...

• osmosis

• diffusion

• active transport

• facilitated diffusion

Passive transport requires no

• concentration gradients
• osmosis
• motion
• energy

What type of transport is illustrated?

• facilitated diffusion
• active transport
• diffusion
• osmosis

Which of the following do NOT have cell walls?

• animal cells
• bacteria cells
• plant cells
• fungi