Podcast
Questions and Answers
Which of the following processes involves the movement of a substance against its electrochemical gradient?
Which of the following processes involves the movement of a substance against its electrochemical gradient?
- Osmosis
- Active transport (correct)
- Simple diffusion
- Facilitated diffusion
In the proximal tubule, the Na+ - H+ antiporter is located in which membrane of the cell?
In the proximal tubule, the Na+ - H+ antiporter is located in which membrane of the cell?
- Endoplasmic reticulum membrane
- Mitochondrial membrane
- Apical membrane (correct)
- Basolateral membrane
What drives the uphill movement of H+ during the Na+ - H+ antiport process?
What drives the uphill movement of H+ during the Na+ - H+ antiport process?
- The electrochemical gradient of H+
- ATP hydrolysis
- The concentration gradient of H+
- The electrochemical gradient of Na+ (correct)
Which of the following is an example of an active transport mechanism that consumes ATP?
Which of the following is an example of an active transport mechanism that consumes ATP?
What is the primary function of the Ca++ - ATPase?
What is the primary function of the Ca++ - ATPase?
Which of the following processes is important for the reabsorption of small proteins and macromolecules by the proximal tubule?
Which of the following processes is important for the reabsorption of small proteins and macromolecules by the proximal tubule?
During the Na+ - H+ antiporter process in the proximal tubule, what is the direction of movement for H+?
During the Na+ - H+ antiporter process in the proximal tubule, what is the direction of movement for H+?
Which of the following transport mechanisms in the collecting duct is responsible for H+ secretion?
Which of the following transport mechanisms in the collecting duct is responsible for H+ secretion?
In active transport, which direction does the movement of substances typically occur?
In active transport, which direction does the movement of substances typically occur?
What is the primary energy source for active transport processes like the Na+ - K+ - ATPase?
What is the primary energy source for active transport processes like the Na+ - K+ - ATPase?
Which type of transport mechanism involves the movement of substances across the plasma membrane by forming vesicles in the cytoplasm?
Which type of transport mechanism involves the movement of substances across the plasma membrane by forming vesicles in the cytoplasm?
What is the role of ATP-binding cassette (ABC) transporters in cellular transport processes?
What is the role of ATP-binding cassette (ABC) transporters in cellular transport processes?
