Daily Notes

Life as we know it is not possible without water.

Explain why you

think water is

important for life!

Remember the 4 Molecules found in all cells?

Carbohydrates- feed the cell

Proteins- build and repair the cell

Nucleic Acids- instruct the cell

Lipids- control fluids in and out of the cell

The Cell and Water

Key Terms

1 – Phospholipid

2 – Cell membrane

3 - Osmosis

Phospholipid

Cell Membrane

Osmosis – movement of water through a membrane

Cell Membrane LabBig Question: How does a membrane affect the flow of water in and out of a cell?

1 - Work in groups of 4

2 – Test the ability of a ziploc bag to function as a cell membrane.

Supplies:1 – Ziploc bag2 – Water3 – Clear cup/bowl4 – Food coloring5 - Toothpicks

Visual Summary – page 22

Word Bank

lipid cell membrane

He-Man nucleic acid

molecule osmosis

protein dolphin

carbohydrate atom

Lesson Review

- In class review

- HW - page 23

- Study!!!

Can you describe how water passes through the cell membrane?

4 I can teach someone else3 I can explain it on my own to someone2 I can remember most of it but don’t

understand it all1 If someone give me hints I can explain

some of it0 I have no idea what you’re talking

about