Cell Transport

What term describes a solution that has the same solute concentration inside of and outside of the cell?

• Hypertonic

• Hypotonic

• Isotonic

What is the diffusion of water across a cell or semi-permeable membrane?

• Osmosis
• Diffusion
• Active Transport
• Passive Transport

Students are observing particles moving against/up the concentration gradient in a lab investigation. Which type of transport are they observing?

• osmosis

• active Transport

• diffusion

• none of the above

Active transport requires

• A concentration gradient

• Osmosis

• Energy

• Hypertonic solution

Diffusion occurs when molecules

• move through a permanent barrier

• move against the concentration gradient

• move from high to low concentration

• move from low to high concentration

What type of molecules can easily diffuse through the cell membrane?

• Small Molecules

• Large Molecules

• Charged Molecules

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

• vacuole
• nucleus
• cell membrane
• cell wall

In which direction will the water move?

• from right to left
• from left to right
• they will not move at all
• they will move in both directions equally

What is this molecule?

• triglyceride

• cellulose

• phospholipid

• protein

Which part of the phospholipids is hydrophobic?

• heads

• tails