Advertisements
Advertisements
प्रश्न
How is the intracellular levels of ions maintained higher than extracellular levels in animal cells?
उत्तर
Animal cells have ATP-powered pumps like the Na+ – K+ pump where 3Na+ is sent out in exchange of 2 K+ ions thus increasing the level of K+ ions in the intracellular region. This is how via the pumps, ion concentration is maintained higher intracellularly than in the extracellular region.
APPEARS IN
संबंधित प्रश्न
What are porins? What role do they play in diffusion?
The main difference between active and passive transport across cell membrane is
Lipid soluble substances travel through the membrane by ______.
Smaller, lipid soluble molecules diffuse faster through cell membrane, but the movement of hydrophilic substances are facilitated by certain transporters which are chemically ______.
Identify the process occurring in I, II and III
What are ‘aquaporins’? How does presence of aquaporins affect osmosis?
Differentiate between diffusion and translocation in plants.
How is facilitated diffusion different from diffusion?
Define Uniport, Symport and Antiport. Do they require energy?
Write a short note on facilitated diffusion.
