LABORATORY REVIEW
DIFFUSION AND OSMOSIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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requires energy, high to low
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requires no energy, low to high
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requires no energy, high to low
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requires energy, low to high
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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: -Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration-against the concentration gradient.
Detailed explanation-3: -Active transport mechanisms require the use of the cell’s energy, usually in the form of adenosine triphosphate (ATP).
Detailed explanation-4: -Active transport moves molecules and ions from lower concentration to higher concentration with the help of energy in the form of ATP. On the other hand, passive transport moves molecules and ions from a higher concentration to lower concentration without any energy.
Detailed explanation-5: -Active transport requires energy for the process by transporting molecules against a concentration or electrochemical gradient.