JAMB Exam > JAMB Videos > Biology for JAMB > Introduction to Osmosis & Diffusion
Introduction to Osmosis & Diffusion Video Lecture | Biology for JAMB
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FAQs on Introduction to Osmosis & Diffusion Video Lecture - Biology for JAMB
| 1. What is osmosis? |  |
Ans. Osmosis refers to the process of movement of solvent molecules from an area of lower solute concentration to an area of higher solute concentration, through a semi-permeable membrane. This movement aims to equalize the concentration on both sides of the membrane.
| 2. What is diffusion? | |
Ans. Diffusion is the movement of particles or molecules from an area of higher concentration to an area of lower concentration. This process occurs due to the random motion of particles and aims to achieve a state of equilibrium where the concentration is uniform throughout the system.
| 3. How does osmosis differ from diffusion? | |
Ans. Osmosis and diffusion are both types of passive transport where substances move across a concentration gradient. The main difference lies in the nature of the substances being transported. In osmosis, only the solvent molecules (usually water) move, whereas in diffusion, both solute and solvent molecules are involved in the movement.
| 4. What factors affect the rate of osmosis and diffusion? | |
Ans. Several factors influence the rate of osmosis and diffusion. These include temperature, concentration gradient, surface area of the membrane, and the permeability of the membrane. Higher temperature, steeper concentration gradient, larger surface area, and higher membrane permeability generally result in faster rates of osmosis and diffusion.
| 5. How are osmosis and diffusion important in biological systems? | |
Ans. Osmosis and diffusion play crucial roles in various biological processes. For example, osmosis is responsible for the uptake of water by plant roots and the regulation of water balance in animal cells. Diffusion allows the exchange of gases in the respiratory system, transport of nutrients across cell membranes, and the release of waste products from cells. These processes are essential for maintaining the overall function and homeostasis of living organisms.
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Nov 23, 2024 Last updated |
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