Cell Membrane and Transport

What is the process by which substances move through cell membranes?

• Active transport

• Passive transport

• Diffusion

• Osmosis

Which of the following substances can pass easily into cells without help?

• Water

• Sugar

• Oxygen

• Signaling molecules

What is the term for the diffusion of water across a cell membrane?

• Osmosis

• Active transport

• Phagocytosis

• Pinocytosis

What is the term for a solution that has a higher concentration inside a cell compared to outside?

• Hypertonic

• Hypotonic

• Isotonic

• Exocytosis

What is the name of the protein that allows passage of water and ions through the cell membrane?

• Aquaporins

• Phospholipids

• ATP

• Sodium-potassium pump

Which type of transport requires ATP as an energy source?

• Passive transport

• Diffusion

• Exocytosis

• Active transport

What is the name of the protein pump that transports sodium out of a cell?

• Aquaporins

• Phospholipids

• ATP

• Sodium-potassium pump

What is the difference in electrical charge on either side of a cell's membrane called?

• Concentration gradient

• Electrochemical gradient

• Isotonic

• Hypotonic

What is the process by which nerve cells release neurotransmitters?

• Exocytosis

• Phagocytosis

• Pinocytosis

• Receptor-mediated endocytosis

What is the term for the process of engulfing whole particles by a cell?

• Phagocytosis

• Pinocytosis

• Exocytosis

• Receptor-mediated endocytosis