Red Onion Lab Check-in

This experiment was designed to help us observe a process that moves materials in and out of a cell.

This process is called . . .

• respiration
• absorption
• diffusion

• transport
• digestion

Tags

NGSS.MS-LS1-2

Look at the image. It shows onion cells under the microscope.

What environmental condition have these cells been exposed to?

• Freshwater Environment

• Acidic

  Environment

• Salty

  Environment

• Cold

  Environment

• Warm

  Environment

Tags

NGSS.MS-LS1-5

Look at the image. It shows onion cells under the microscope.

What environmental condition have these cells been exposed to?

• Freshwater Environment

• Acidic

  Environment

• Salty

  Environment

• Cold

  Environment

• Warm

  Environment

Tags

NGSS.MS-LS1-5

We used several skills to complete this lab. Match the image with the science skill it demonstrates.

• Switch water type with paper towel

• 
• Make a drawing of what you observed

• 
• Make a wet mount slide

• 
• Prepare and focus the microscope

• 

Tags

NGSS.MS-LS1-1

In the directions you were asked to use a specific power to observe the onion cells. What was it?

• x 100

  Yellow

• x 40

  Red

• x 400

  Blue

• x 0

  Your eyes

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

When we observed onion cells exposed to salt water 3 cell structures were visible. Label them.

a

b

c

Cytoplasm

Cell Membrane

Nucleus

Organelle

DNA

Cell Wall

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

When we observed onion cells exposed to fresh water 3 cell structures were visible. Label them.

a

b

c

Nucleus

Cytoplasm

Organelle

Cell Membrane

Cell Wall

DNA

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

This is a diagram of red blood cells inside a vein passing by the lungs.

Based on our rules of diffusion the:

Oxygen (yellow) will​ (a)  

Carbon Dioxide (green dots) will ​ (b)  

• move from the lungs to the blood
• move from the blood to the lungs
• stay in the blood
• stay in the lungs
• move back and forth equally

This red blood cell is in an environment where there is a lot of Oxygen outside of it, but not very much inside of it.

Based on our rules of diffusion the oxygen will . . .

• stay still and not move at all

• move from inside the cell to outside the cell

• move back and forth in equal amounts

• move from outside the cell into the cell

In our experiment when we exposed the cell to salty water the salt couldn't move in our out of the cell.

This made it so there was a ​ (a)   concentration of water inside the cell and a ​ (b)   concentration of water outside the cell which caused the water to move ​ (c)   of the cell and make it ​ (d)   .

• high
• low
• out
• shrink
• into
• swell up

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-5

NGSS.MS-LS2-1