Wake-up 1.How can you tell the difference between an onion cell and a Elodea cell? 1.Why was the Human cheek cell round and not square? -Turn in Wake-up and Animal/Plant Cell Lab from Friday

Plasma Membrane and Cell Wall Christopherson

Fill in the chart at the top of your notes. Use your notes if necessary.

Membrane: Prokaryotic Cell

Membrane: Eukaryotic Cell

Phospholipid: Structure Phosphate Head Lipid Tail Hydrophilic: LOVES water Hydrophobic: HATES water

Phospholipid bilayer Membrane is made up of two layers of phospholipids. With this arrangement in mind, where is the “water” in the diagram? WATER Hydrophilic: LOVES water Hydrophobic: HATES water

Location: Surrounds the cell and organelles

Function of Phospholipids Controls what comes in and out of cells; the gatekeeper

Label Phospholipids on the diagram

Cholesterol Location: Found in between the phospholipids in the bilayer. Function: Keeps the membrane together; the phosphate heads are not attached to each other

Label Cholesterol on the diagram

Proteins Location: Within the phospholipid bilayer

1. Transport Proteins Helps larger substances pass through the bilayer

2. Glycoprotein: Protein with a carbohydrate Helps cells recognize similar cells; similar cells form tissue

Label Transport protein and Glycoprotein

Carbohydrate Location: On the top of proteins or phospholipids Function: Help recognized similar cells to form tissues OR to recognize foreign substances in the cell

* Label Carbohydrate on the diagram

Watch me!!! Watch me!!! Shows movement of Bilayer

Cell Wall Location: Layer outside of the cell membrane in some organisms Function: Provide structure and support

Plants Cell Wall

Bacteria Cell Wall

Fungus

Phytoplankton Cell Wall