Exploring Cell Membrane Dynamics: Transport Mechanisms

What is the primary function of the cell membrane?

• To store genetic information

• To separate the inside of the cell from the outside

• To facilitate cell division

• To produce energy for the cell

What is the structure of the cell membrane primarily composed of?

• Nucleic acids

• Phospholipids

• Carbohydrates

• Proteins

Why is the cell membrane described as a 'fluid mosaic'?

• Because it is made of a single type of molecule

• Because the phospholipids and proteins are fixed in place

• Because it is solid and rigid

• Because the phospholipids and proteins can move around

What is the role of cholesterol in the cell membrane?

• To give the membrane rigidity

• To store genetic information

• To transport molecules across the membrane

• To make the membrane more fluid

Which molecules can pass through the cell membrane via simple diffusion?

• Ions

• Small nonpolar molecules

• Proteins

• Large polar molecules

What type of transport does not require energy?

• Endocytosis

• Exocytosis

• Active transport

• Facilitated diffusion

Which molecule is used as the energy currency in active transport?

• ATP

• Glucose

• DNA

• RNA

Which type of protein helps water molecules move across the cell membrane?

• Ion channels

• Carrier proteins

• Receptor proteins

• Aquaporins

What is the function of glycoproteins in the cell membrane?

• To help cells recognize each other

• To store genetic information

• To transport ions

• To provide energy

What happens to a carrier protein when it binds with glucose?

• It breaks down

• It changes shape

• It releases energy

• It becomes rigid