LABORATORY REVIEW
DIFFUSION AND OSMOSIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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1:lower concentration, 2:higher concentration,
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1:higher concentration, 2:lower concentration,
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1:higher concentration, 2:lower concentration,
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1:lower concentration, 2:higher concentration,
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Detailed explanation-1: -Active transport is the movement of molecules across a cell membrane from a region of their lower concentration to a region of their higher concentration. Since such a movement happens against the concentration gradient, it cannot happen naturally, and needs energy in the form of ATP to be carried out.
Detailed explanation-2: -Active transport is a kind of cellular transport in which substances like amino acids, glucose and ions are transported across cell membranes to a region that already has a high concentration of such substances.
Detailed explanation-3: -Active transport transports or moves materials against the concentration gradient, that is, from low to high, and the size doesn’t matter here like facilitated diffusion, only the concentration.
Detailed explanation-4: -“Active Transport is defined as a process that involves the movement of molecules from a region of lower concentration to a region of higher concentration against a gradient or an obstacle with the use of external energy.”
Detailed explanation-5: -Final answer: Movement of molecules from their higher concentration to their lower concentration is called diffusion.