NURSING EXAM QUESTIONS
MICROBIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The movement of substances from lower to higher concentration across a semipermeable membrane that must have a specific protein carrier and cell expenditure of energy is called
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facilitated diffusion.
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diffusion.
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active transport.
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osmosis.
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Explanation:
Detailed explanation-1: -During active transport, substances move against the concentration gradient, from an area of low concentration to an area of high concentration. This process is “active” because it requires the use of energy (usually in the form of ATP). It is the opposite of passive transport .
Detailed explanation-2: -Osmosis: Osmosis is the movement of solvent particles across a semipermeable membrane from a dilute solution into a concentrated solution.
Detailed explanation-3: -Osmosis is the diffusion of water molecules across a semi‐permeable membrane. When water moves into a cell by osmosis, hydrostatic pressure (osmotic pressure) may build up inside the cell.
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