Exploring Cell Membrane Structure and Function

The video tutorial explains the structure and function of the cell membrane using a house analogy. It covers the 3D structure of cells, the phospholipid bilayer, and the fluid mosaic model. The tutorial details the roles of cholesterol, proteins, glycoproteins, and glycolipids in the membrane. It also discusses the functions of membrane proteins, including adhesion, hormone binding, and transport. The video concludes with a historical overview of membrane models and practice questions.

What is one of the primary functions of the cell membrane, similar to the walls of a house?

• DNA replication

• Protection

• Energy production

• Photosynthesis

What is the term used to describe the cell membrane's ability to control what enters and exits the cell?

• Osmosis

• Selective permeability

• Active transport

• Diffusion

What is the main structural component of the cell membrane?

• Nucleic acids

• Phospholipids

• Carbohydrates

• Proteins

Which part of the phospholipid is hydrophilic?

• Phosphate head

• Cholesterol

• Glycerol

• Fatty acid tails

What is the term for a molecule that has both hydrophilic and hydrophobic parts?

• Amphipathic

• Hypertonic

• Isotonic

• Hypotonic

What model describes the current understanding of the cell membrane structure?

• Bohr model

• Double helix model

• Fluid mosaic model

• Lock and key model

What is the role of cholesterol in the cell membrane?

• Synthesizes proteins

• Controls membrane fluidity

• Produces energy

• Increases body fat

What type of protein spans the entire width of the cell membrane?

• Glycoprotein

• Integral protein

• Peripheral protein

• Enzyme

What is one function of glycoproteins in the cell membrane?

• Energy storage

• Cell communication

• Photosynthesis

• DNA replication

Which function is NOT performed by membrane proteins?

• Photosynthesis

• Cell adhesion

• Hormone binding

• Self-recognition