Homeostasis Review

Osmosis is the diffusion of _____ across a selectively permeable membrane.

• food
• air
• water
• oxygen

During diffusion

• substances (things) moves from high to low concentration
• water moves when energy is used
• large or oddly shaped molecules move across a cell membrane
• water moves from high to low concentration

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

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

Tags

NGSS.MS-LS1-2

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

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

Tags

NGSS.HS-LS1-3

In a solution, salt is considered the _______.

• solvent
• solute
• solution

In a scenario, salt is placed into a bowl of water.  What is the solvent?

• salt
• water
• saltwater

What does selectively-permeable mean?

• The cell controls what passes in and out of the cell
• Nothing gets through
• The cell lets only large substances through

Tags

NGSS.MS-LS1-2

 If a cell containing 5% salt is placed into a glass of water with 20% salt, the water is _______ compared to the cell.

• hypertonic-
• hypotonic
• isotonic

Both side of a selectively- permeable membrane are equal. The sides are ______.

• isotonic
• hypertonic
• hypotonic

The picture below is an example of _________________.

• osmosis
• isotonic
• diffusion
• active transport