Cell Physiology

What is it called when large molecules move across the cell membrane from an area of high concentration to an area of low concentration through a protein channel?

• Diffusion

• Osmosis

• Active Transport

• Facilitated Diffusion

Cell membrane transport that occurs without energy is called--

• active transport

• endocytosis

• passive transport

• exocytosis

What is the name of the process in which small, non-polar, lipid soluble molecules move from an area of high concentration to an area of low concentration across the cell membrane

• Diffusion

• Osmosis

• Active Transport

• Facilitated Diffusion

What is the difference between active and passive transport?

• Active does not need energy and passive uses ATP (energy)
• Active uses ATP (energy) and passive does not need energy
• Active stores transport proteins and passive releases 
• Active uses hormones and passive does not 

Osmosis is the movement of _____ across a membrane.

• food
• energy
• oxygen
• water

What type of transport is illustrated?

• facilitated diffusion
• active transport
• diffusion
• osmosis

The picture is an example of...

• active tranport
• passive transport
• diffusion
• osmosis

Which correctly points to the part of the image that is hydrophobic?

• A

• B

Based on the water movement, what are the correct labels for the left and right sides of the membrane in the 'before' picture?

• The left is isotonic and the right is hypertonic.

• The left is hypotonic and the right is hypertonic.

• The left is hypertonic and the right is hypotonic.

• The left is hypotonic and the right is isotonic.

Which image best represents facilitated diffusion?

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