Lab 3: Osmosis and Diffusion

Osmosis involves

• movement of water across a concentration gradient

• movement of solutes across a concentration gradient

• movement of water against a concentration gradient

• movement of solutes against a concentration gradient

Tags

NGSS.MS-LS1-2

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

In the given scenario what will happen?  An egg is placed in pure water for 48 hours.

• The egg will gain water and swell.
• Water will move in and out of the cell equally, and the cell with neither shrink nor swell.
• The egg will lose water and shrink.

Tags

NGSS.MS-LS1-2

The picture below is an example of _________________.

• osmosis
• isotonic
• diffusion
• active transport

Osmosis

• diffusion of water molecules through a semi-permeable mebrane from an area of low concentration to an area of high concentration
• the diffusion of particles from an area of high concentration to an area of low concentration
• diffusion of water molecules through a semi-permeable membrane from an area of high concentration to an area of low concentration
• the diffusion of particles from an area of low concentration to an area of high concentration

Tags

NGSS.MS-LS1-2

The cell below is in a _________ solution.

• Hypotonic
• Hypertonic
• Isotonic

Which cell is placed into a hypotonic environment? 

• A
• B
• C
• D

Tags

NGSS.MS-LS1-2

Where is there a low concentration of perfume?

• in the bottle
• on the hand
• in the room
• in the top

Tags

NGSS.MS-PS1-2

Which diagram best shows the end result of diffusion?

• F
• G
• H
• J

What is the dialysis tubing made out of?

• cells

• cellulose

• starch

• glucose