Exploring Cell Membrane Transport Mechanisms

What is the primary role of neurotransmitters in cell communication?

• To maintain metabolic processes

• To import oxygen into the cell

• To export carbon dioxide from the cell

• To induce the transport of chemicals across the plasma membrane of another cell

Which of the following is NOT a passive transport process?

• Facilitated diffusion

• Transport using protein pumps

• Diffusion through the bilayer

• Osmosis

What drives passive transport processes?

• Vesicles

• Membrane proteins

• Concentration gradients

• ATP energy

Which molecule cannot pass through the phospholipid bilayer by diffusion?

• Oxygen

• Carbon dioxide

• Glucose

• Water

What is the role of the sodium-potassium pump?

• To promote production of transporter proteins

• To transport large particles

• To maintain electrochemical gradients in neurons

• To facilitate diffusion

Which process uses energy from ATP to move molecules across the membrane?

• Diffusion

• Facilitated diffusion

• Active transport

• Osmosis

What is an example of secondary active transport?

• Absorption of nutrients from the digestive tract

• Transport of oxygen

• Diffusion of water

• Export of carbon dioxide

Which type of endocytosis involves the cell 'drinking' extracellular fluid?

• Pinocytosis

• Exocytosis

• Phagocytosis

• Receptor-mediated endocytosis

What happens during exocytosis?

• Cells eject waste products

• Cells import large particles

• Cells absorb nutrients

• Cells undergo osmosis

Which cells release neurotransmitters via exocytosis?

• Muscle cells

• Nervous cells

• Epithelial cells

• Red blood cells