Transport Mechanisms Quiz

Which type of transport moves molecules down a concentration gradient without requiring energy?

• Active transport

• Passive transport

• Facilitated transport

• Endocytosis

What is required for active transport to occur?

• No energy

• Movement down a concentration gradient

• Energy

• Simple diffusion

Which of the following is NOT a type of passive transport?

• Simple diffusion

• Osmosis

• Facilitated diffusion

• Active transport

What is passive transport?

• Movement of substances across a membrane using energy

• Diffusion of a substance across a membrane without energy

• Transport of substances against the concentration gradient

• Active transport of molecules

In passive transport, substances move:

• From low concentration to high concentration

• Against the concentration gradient

• From high concentration to low concentration

• Using cellular energy

Which of the following is true about simple diffusion?

• It requires energy

• It moves substances against the concentration gradient

• It is a form of passive transport

• It involves active transport proteins

What type of molecules can cross membranes by simple diffusion?

• Large, polar molecules

• Small, nonpolar molecules

• Ions

• Proteins