Cell Organelles and Transport

Which of the following is a function of the cell membrane?

• regulates which materials enter and leave the cell

• breaks down lipids, carbohydrates, and proteins from foods

• transports materials in the cell

• supports the cell wall

Tags

NGSS.MS-LS1-2

An animal cell that is surrounded by fresh water will burst because the osmotic pressure causes

• the water to go IN to the cell.

• the water to go OUT of the cell.

• the water will not move.

• the water will flow both IN and OUT of the cell.

Tags

NGSS.MS-LS1-2

Most of the cell membrane is made of...

• Lipids
• Carbohydrates
• Proteins
• Nucleic acids

What is embedded in the phospholipid bilayer?

• proteins
• salt
• water
• trapped animals

What is diffusion?

• when molecules move 
• when molecules move from a high concentration to a low concentration

• no movement 
• molecules move everywhere

The picture below is an example of _________________.

• osmosis
• isotonic
• diffusion
• active transport

Osmosis is the movement of _____ across a membrane.

• food
• energy
• oxygen
• water

During osmosis

• water moves from high to low concentration
• large or oddly shaped molecules move across a cell membrane
• water moves when energy is used
• proteins are built

 An animal cell placed in a hypertonic (salty) solution will

• Stay the same
• Shrink- get smaller
• Swell- get bigger

What happened to the CELL WALL and the CELL MEMBRANE in these plant cells?

• Both the CELL WALL and CELL MEMBRANE shrunk

• Only the CELL WALL shrunk, the CELL MEMBRANE stayed the same

• The CELL WALL stayed the same, only the CELL MEMBRANE shrunk

• Both the CELL WALL and CELL MEMBRANE stayed the same

Tags

NGSS.MS-LS1-2