Counter-Transport and Transcellular Transport Quiz

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Which type of transport is used to move glucose and amino acids across the cell membrane?

Active transport

Facilitated diffusion (correct)

Counter-transport

Simple diffusion

What is the primary function of the sodium-potassium pump (Na+/K+-ATPase) in animal cells?

To transport H+ and K+ ions in opposite directions

To transport glucose and amino acids into the cell

To transport Na+ and K+ ions in the same direction

To transport Na+ out of the cell and K+ into the cell (correct)

Which of the following is an example of a P-class ion pump?

Amino acid transporter (AAT)

Calcium channel

Glucose transporter (GLUT)

Sodium-potassium pump (Na+/K+-ATPase) (correct)

What is the primary role of the (H+, K+)-ATPase pump in the stomach?

To transport H+ out of the gastric parietal cell and K+ into the cell Signup and view all the answers

Which type of membrane transport process involves the formation of new vesicles to import macromolecules into the cell?

Endocytosis Signup and view all the answers

What is the primary role of glucose transporters (GLUTs) in the body?

To facilitate the diffusion of glucose down its concentration gradient Signup and view all the answers

What is the characteristic feature of all GLUT proteins?

They have a predicted molecular weight of about 55,000 Daltons Signup and view all the answers

Which type of transport exhibits saturation and can be inhibited by drugs?

Facilitated Diffusion Signup and view all the answers

What is the main energy source for Primary Active Transport?

Direct use of energy (ATP) Signup and view all the answers

Where is the Na+/K+ ATPase carrier protein located?

On the plasma membrane of all cells Signup and view all the answers

What role does the Na+/K+ ATPase carrier protein play in cells?

Maintaining Na+ and K+ balance through active transport Signup and view all the answers

What are the subunits of the Sodium-Potassium ATPase pump?

Alpha and Beta Signup and view all the answers

What is the primary function of the sodium-potassium pump (Na-K ATPase) in the cell membrane?

To maintain the electrochemical gradient across the cell membrane Signup and view all the answers

How do cardiac glycosides, such as digoxin, increase cardiac contractility?

By inhibiting the sodium-potassium pump, which leads to an increase in intracellular calcium concentration Signup and view all the answers

Which of the following is a characteristic of facilitated diffusion?

It is mediated by specialized membrane transport proteins Signup and view all the answers

Which type of glucose transporter is responsible for the uptake of glucose in the small intestine?

SGLT1 Signup and view all the answers

What is the main role of the sarcoplasmic reticulum in muscle cells?

To store and release calcium ions during muscle contraction and relaxation Signup and view all the answers

What is the main function of the sodium-potassium ATPase (Na-K pump) in the cell membrane?

To maintain the electrochemical gradient across the cell membrane by actively transporting sodium and potassium ions Signup and view all the answers