SCIENCE
CELL BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It’s very rapid over long distances.
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It’s a passive process which molecules move from a region of higher to lower concentration.
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It requires an energy expenditure by the cell.
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It’s an active process where molecules move from a region of lower to higher concentration.
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Detailed explanation-1: -Diffusion process does not require energy and thus it is passive transport . Osmosis is a process in which the solvent molecules move from lower solute concentration to higher solute concentration through a semi-permeable membrane. This process does not require energy. Thus, the correct answer is option C.
Detailed explanation-2: -Which of the following statements is correct about passive diffusion? It involves movement of molecules down a concentration gradient and may require a transport protein.
Detailed explanation-3: -It is a passive process in which molecules move from a region of higher concentration to a region of lower concentration.-CORRECT.
Detailed explanation-4: -Diffusion. Diffusion is a passive process of transport. A single substance tends to move from an area of high concentration to an area of low concentration until the concentration is equal across the space. You are familiar with diffusion of substances through the air.
Detailed explanation-5: -Diffusion is a type of passive transport, where molecules move from high concentration to low concentration. This means that the concentration of oxygen in the air must be higher than it is in the blood.