Plasma Membrane

Phospoholipid

• Lipophillic

• Amphiphatic

• Hydrophobic

• Hydrophillic

An example of Facilitated diffusion

• Sodium-potassium pump

• Glucose Transport model

• Ping-pong model

• Insulin transport model

Transport of large molecules into the cell

• Pinocytosis

• Exocytosis

• Phyllocytosis

• Phagocytosis

Active transport is different to passive transport because....

• it doesnt require ATP.

• molecules move agaisnt a concentration gradient.

• it only uses channel proteins.

• molecules move towards a concentration gradient.

Which of the following genetic diseases is caused by mutations in a membrane protein.

• Cystic Fibrosis

• Anemia

• Parkinson’s disease

• Alzheimer’s disease

Triglyceride

• 2 lipid tails

• 3 lipid tails

• no lipid tails

• 4 lipid tails

According to mosaic model, plasma membrane made up of_________

• Cellulose and hemicellulose

• Phospholipids and hemicellulose

• Phospholipids, cholestrol and membrane proteins.

• Phospholipids only

Some functions of of Membrane Proteins

• 1. DNA synthesis

  2. Osmoregulation

• 1.Protein synthesis

  2. Cell Junctions

  3. Metabolism

• 1. Cell-to-cell communication

  2. Junctions

  3. Transport

  3.

• 1. Transport

  2. Protein degradation

The type of cell junction which facilitates cell to cell communication. 

• Adhering junction

• Desmosomes

• Tight junction

• Gap junction

Which one of the following is not a constituent of cell membrane?

• Cholesterol

• Proline

• Glycolipids

• Phospholipids