Cell Membrane Structure and Function

The video tutorial explains the process of drawing a cell, focusing on the cell membrane. It describes the membrane's protective role, its structural and organizational functions, and its selective permeability. The composition of the membrane, including phospholipids and proteins, is discussed, highlighting its thinness. The video concludes with a recap of the key points about the cell membrane.

What is another name for the cell membrane?

• Nuclear membrane

• Plasma membrane

• Cytoplasmic membrane

• Mitochondrial membrane

How does the cell membrane contribute to the cell's structure?

• By producing proteins

• By storing nutrients

• By giving the cell its shape

• By providing energy

What is the term used to describe the cell membrane's ability to allow only certain substances to pass through?

• Selective permeability

• Osmosis

• Diffusion

• Active transport

What analogy is used to describe the selective permeability of the cell membrane?

• A door

• A roof

• A wall

• A window

What are the main components of the cell membrane?

• Sugars and starches

• Phospholipids and proteins

• Proteins and nucleic acids

• Carbohydrates and lipids

What is the function of the small 'doors' in the cell membrane?

• To allow all substances to pass

• To store energy

• To block all substances

• To allow specific substances to pass

How many cell membranes would it take to match the thickness of a single page?

• 50,000

• 500,000

• 500

• 5,000

What is the role of phospholipids in the cell membrane?

• To transport oxygen

• To provide energy

• To store genetic information

• To form a barrier

What is the significance of the cell membrane being semi-permeable?

• It allows only small substances and solvents like water to pass

• It allows only large molecules to pass

• It blocks all substances

• It allows all substances to enter

What is the primary protective function of the cell membrane?

• To produce energy

• To protect the cell from the external environment

• To synthesize proteins

• To store nutrients