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Active Transport and Cell Transport Mechanisms Quiz

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Active Transport and Cell Transport Mechanisms Quiz

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Questions and Answers

What is the main requirement for primary active transport to occur?

Low concentration of ATP

Presence of a specific carrier and energy (correct)

Low concentration of the transported substance

High concentration of the transported substance

What is the definition of primary active transport?

Transport of a substance with its electrochemical gradient without using energy

Transport of a substance against its electrochemical gradient without using a carrier

Transport of a substance with its electrochemical gradient by a specific carrier

Transport of a substance against its electrochemical gradient by a specific carrier using energy (correct)

Which of the following is an example of primary active transport?

Passive diffusion of water

Sodium-potassium pump (correct)

Facilitated diffusion of glucose

Simple diffusion of oxygen

In which type of cells is the H+ pump present?

<p>Parietal cells of the stomach and renal tubule cells</p> Signup and view all the answers

What is the function of the calcium pump in muscle fibers?

<p>Pumps Ca2+ to the inside of the sarcoplasmic reticulum</p> Signup and view all the answers

Study Notes

Primary Active Transport

The main requirement for primary active transport to occur is the direct use of energy, typically in the form of ATP.
Primary active transport is defined as the movement of molecules across a cell membrane from a low concentration to a high concentration, using energy from ATP.

Examples and Cellular Locations

An example of primary active transport is the Sodium-Potassium pump.
The H+ pump is present in epithelial cells, which line the surfaces of tissues and organs.
The calcium pump is present in muscle fibers, where it regulates muscle contraction and relaxation by controlling calcium ion concentrations.

Functions of Pumps

The function of the calcium pump in muscle fibers is to pump calcium ions out of the cytosol and back into the sarcoplasmic reticulum, allowing the muscle to relax.

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Description

Test your knowledge of active transport and cell transport mechanisms with this quiz. Learn about primary and secondary active transport, endocytosis, and exocytosis.