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Active transport across biomembrane involves :-
(A) Production of ATP (B) Requirement of energy
(C) Production of toxin (D) Release of energy
(C) Production of toxin (D) Release of energy
- a)Light microscope
- b)Electron microscope
- c)Both of these
- d)None of these
Correct answer is option 'B'. Can you explain this answer?
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Active transport across biomembrane involves :-(A) Production of ATP (...
Active Transport Across Biomembranes
Active transport is the process of moving molecules or ions across a cell membrane from a region of lower concentration to a region of higher concentration, against the concentration gradient. This process requires the input of energy and is therefore an energy-dependent process.
Requirement of Energy
The energy required for active transport is obtained from the hydrolysis of ATP (adenosine triphosphate), which is produced by the mitochondria through cellular respiration. ATP is a high-energy molecule that provides energy to the cell for various functions, including active transport.
Mechanism of Active Transport
Active transport occurs through the use of protein pumps or carriers in the cell membrane. These pumps or carriers bind to the molecule or ion to be transported and undergo a conformational change, which moves the molecule or ion across the membrane.
Examples of Active Transport
Two examples of active transport are the sodium-potassium pump and the proton pump. The sodium-potassium pump moves sodium ions out of the cell and potassium ions into the cell, while the proton pump moves hydrogen ions out of the cell.
Importance of Active Transport
Active transport is essential for many biological processes, including the absorption of nutrients in the intestines, the reabsorption of ions in the kidneys, and the transmission of nerve impulses.
Conclusion
Active transport is a crucial process that enables the cell to maintain the proper balance of molecules and ions. It requires the input of energy, which is obtained from the hydrolysis of ATP. Protein pumps or carriers in the cell membrane facilitate the movement of molecules or ions across the membrane.
Active transport is the process of moving molecules or ions across a cell membrane from a region of lower concentration to a region of higher concentration, against the concentration gradient. This process requires the input of energy and is therefore an energy-dependent process.
Requirement of Energy
The energy required for active transport is obtained from the hydrolysis of ATP (adenosine triphosphate), which is produced by the mitochondria through cellular respiration. ATP is a high-energy molecule that provides energy to the cell for various functions, including active transport.
Mechanism of Active Transport
Active transport occurs through the use of protein pumps or carriers in the cell membrane. These pumps or carriers bind to the molecule or ion to be transported and undergo a conformational change, which moves the molecule or ion across the membrane.
Examples of Active Transport
Two examples of active transport are the sodium-potassium pump and the proton pump. The sodium-potassium pump moves sodium ions out of the cell and potassium ions into the cell, while the proton pump moves hydrogen ions out of the cell.
Importance of Active Transport
Active transport is essential for many biological processes, including the absorption of nutrients in the intestines, the reabsorption of ions in the kidneys, and the transmission of nerve impulses.
Conclusion
Active transport is a crucial process that enables the cell to maintain the proper balance of molecules and ions. It requires the input of energy, which is obtained from the hydrolysis of ATP. Protein pumps or carriers in the cell membrane facilitate the movement of molecules or ions across the membrane.
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Active transport across biomembrane involves :-(A) Production of ATP (B) Requirement of energy(C) Production of toxin (D) Release of energya)Light microscopeb)Electron microscopec)Both of thesed)None of theseCorrect answer is option 'B'. Can you explain this answer?
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