Active Cell Transport

Which type of transport requires ATP to move a substance across a membrane?

• Passive transport

• Active transport

• Endocytosis

• Exocytosis

What is the main function of proteins that serve as pumps in active transport?

• To move substances with the help of ATP

• To maintain a high concentration of sodium ions outside of the cell

• To create a concentration gradient for passive transport

• To regulate the endocytosis of specific substances

What is the process called when a cell ingests material by enveloping it in a portion of its cell membrane?

• Phagocytosis

• Pinocytosis

• Exocytosis

• Symporters

Which type of active transport system transports substances in opposite directions?

• Symporters

• Antiporters

• Receptor-mediated endocytosis

• Phagocytosis

What is the purpose of receptor-mediated endocytosis?

• To bring large particles into the cell

• To bring fluid containing dissolved substances into the cell

• To regulate the endocytosis of specific substances

• To export material using vesicular transport

Which type of transport brings fluid containing dissolved substances into a cell through membrane vesicles?

• Phagocytosis

• Pinocytosis

• Exocytosis

• Antiporters

What is the process called when a cell exports material using vesicular transport?

• Endocytosis

• Exocytosis

• Symporters

• Receptor-mediated endocytosis

Which type of cells engage in phagocytosis of invading pathogens?

• Red blood cells

• Endocrine cells

• Immune cells

• Pancreatic cells

What is the main function of the sodium-potassium pump?

• To move sodium and potassium ions in opposite directions

• To maintain a high concentration of sodium ions outside of the cell

• To create a concentration gradient for passive transport

• To regulate the endocytosis of specific substances

What is the purpose of exocytosis?

• To bring large particles into the cell

• To bring fluid containing dissolved substances into the cell

• To export material using vesicular transport

• To maintain the pH of the cell's interior