3. Amoeba Sisters Inside the Cell Membrane (Modified)

The cell membrane is made mainly of what molecule?

• Glycoproteins

• Peripheral Proteins

• Phospholipids

What is letter A (A1 and A2 combined)?

• Glycoprotein

• Integral protein

• Phospholipid

What is letter G?

• Glycoprotein

• Integral protein

• Peripheral Protein

• Glycolipids

What is letter H?

• Glycoprotein

• Integral protein

• Peripheral Protein

Observe the molecule at bracket letter A. Which region (A1 OR A2) is hydrophobic?

• A1

• A2

As a cell’s size ____, its surface area to volume ratio ____.

• increases, increases

• decreases, decreases

• increases, decreases

Letter E is a lipid that prevents the phospholipids from packing tightly together when cold, and it prevents the phospholipids from separating during warm temperatures. What is it?

• Glycolipid

• Cholesterol

• Tryglyceride

Letters C and D are a glycoprotein. What is its function?

• Transport materials, such as glucose, through the cell membrane.

• Act as enzymes, and attach to the cytoskeleton to maintain cell shape.

• Identify cells as self or nonself, and involved in cell signaling.