Active Transport Quiz

What is active transport?

• Movement of molecules from high to low concentration without energy

• Movement of molecules from low to high concentration using energy

• Movement of water across the membrane

• Diffusion of oxygen through the membrane

Which protein is essential for active transport?

• Structural proteins

• Receptor proteins

• Transport proteins

• Channel proteins

Which energy source is required for active transport?

• Glucose

• Oxygen

• ATP

• Enzymes

Tags

NGSS.HS-LS1-7

Which structure in the cell membrane is responsible for moving molecules during active transport?

• Receptor proteins

• Channel proteins

• Transport proteins

• Contractile vacuoles

What type of molecules typically require active transport to cross the membrane?

• Small molecules like water and oxygen

• Large molecules like starch and proteins

• Ions and glucose

• Hormones and neurotransmitters

What distinguishes active transport from passive transport?

• Active transport moves molecules from high to low concentration

• Active transport does not require energy

• Active transport moves molecules from low to high concentration using energy

• Active transport is the same as osmosis

In the diagram of a paramecium, what is the function of the contractile vacuole?

• To transport nutrients into the cell

• To remove excess water from the cell

• To digest food molecules

• To carry oxygen across the membrane

Tags

NGSS.MS-LS1-2

What does the contractile vacuole use to expel water?

• Osmosis

• Diffusion

• Active transport

• Exocytosis

Tags

NGSS.MS-LS1-2

What is the primary purpose of active transport?

• To move molecules from high to low concentration

• To move molecules from low to high concentration using energy

• To allow water to diffuse across a membrane

• To maintain equilibrium without energy

Which of the following is NOT a characteristic of active transport?

• It requires energy (ATP).

• It uses transport proteins.

• It moves molecules from high to low concentration.

• It moves large particles.