Inside the Cell Membrane

The video explores an osmosis lab using eggs to model cell membranes, emphasizing the importance of surface area to volume ratio in cells. It explains the fluid mosaic model, highlighting the roles of phospholipids, cholesterol, and proteins in cell membranes. The video concludes with the significance of cell membrane components in disease recognition and signaling.

What is the purpose of soaking eggs in vinegar for the osmosis lab experiment?

• To cook the egg

• To harden the eggshell

• To mimic a cell membrane

• To change the egg's color

Why can't a cell be as large as a chicken egg?

• Because it would be too heavy

• Because it would require too much energy

• Because the surface area to volume ratio would be too low

• Because it would not fit in the body

What does the fluid mosaic model describe?

• The dynamic nature of the cell membrane

• The process of cell division

• The arrangement of proteins in the cytoplasm

• The structure of the cell nucleus

What role does cholesterol play in the cell membrane?

• It transports proteins across the membrane

• It provides energy to the cell

• It helps maintain membrane fluidity

• It acts as a barrier to water

Which type of protein spans the entire cell membrane?

• Glycoprotein

• Integral protein

• Peripheral protein

• Lipid-anchored protein

What is the function of glycoproteins in the cell membrane?

• They transport oxygen

• They store energy

• They assist in cell recognition and signaling

• They provide structural support

How does the HIV virus exploit the CD4 glycoprotein?

• By using it to bind to helper T cells

• By using it to replicate its DNA

• By using it to produce antibodies

• By using it to destroy red blood cells