Osmosis & Diffusion

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

The picture below is an example of _________________.

• osmosis
• isotonic
• diffusion
• active transport

This organelle regulates what enters and leaves a cell.

• Cell Membrane

• Nucleus

• Mitochondria

• Cytoplasm

Which option best describes what osmosis is?

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

• the diffusion of any particle 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 any particle from an area of low concentration to an area of high concentration

The cell below is shrinking. It can be concluded that the concentration of water is:

• higher inside the cell than outside the cell

• lower inside the cell than outside the cell

• the same inside and outside the cell

Which way will the water molecules move during osmosis?

• Out of the cell, so the cell shrinks.
• Out of the cell, so the cell swells.
• Into the cell, so the cell shrinks.
• Into the cell, so the cell swells.

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

What is diffusion?

• when molecules move 
• when molecules move from a high concentration to a low.
• no movement 
• molecules move everywhere

Tags

NGSS.MS-PS1-4

Which diagram best shows the end result of diffusion?

• F
• G
• H
• J

Tags

NGSS.MS-PS1-4

An animal cell placed in a salty solution will

• Stay the same

• Shrink- get smaller

• Swell- get bigger