Membrane Transport Quiz

What is the primary function of the plasma membrane in cells?

• To provide structural support

• To regulate the movement of substances in and out of the cell

• To store genetic information

• To produce energy for the cell

Which of the following is a characteristic of simple diffusion?

• Requires energy expenditure

• Involves carrier proteins

• Occurs with non-polar molecules

• Moves substances against their concentration gradient

How does facilitated diffusion differ from simple diffusion?

• It only occurs in plant cells

• It moves substances against their concentration gradient

• It involves transport proteins

• It requires energy

What is the role of aquaporins in osmosis?

• They provide energy for transport

• They break down solutes

• They facilitate the movement of water

• They transport ions across the membrane

What distinguishes active transport from passive transport?

• Active transport only occurs in animal cells

• Active transport does not require energy

• Active transport moves substances down their concentration gradient

• Active transport requires cellular energy

In primary active transport, what is the role of ATP?

• It acts as a transport protein

• It provides energy by breaking down into ADP and P

• It creates a concentration gradient

• It binds to solutes for transport

What is the main function of vesicular transport?

• To transport small ions across the membrane

• To move large substances using vesicles

• To facilitate osmosis

• To provide structural support to the cell

Which process involves the secretion of materials from the cell?

• Endocytosis

• Pinocytosis

• Exocytosis

• Phagocytosis

What is phagocytosis commonly referred to as?

• Cell division

• Cell drinking

• Cell eating

• Cell breathing

Which form of endocytosis involves receptors on the plasma membrane?

• Exocytosis

• Receptor-mediated endocytosis

• Pinocytosis

• Phagocytosis