SCIENCE
CELL BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Membrane proteins are always needed in order for it to take place.
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Substances move from areas of high concentration to areas of low concentration.
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The input of ATP is required in order to facilitate transportation.
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Passive transport refers only to the movement of water molecules.
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Detailed explanation-1: -Passive transport is diffusion of molecules across a semi-permeable membrane from an area of high concentration to an area of low concentration in order to achieve a balanced concentration.
Detailed explanation-2: -which of the following statements about passive transport is correct? passive transport permits the solute to move in either direction, but the net movement of the population of solute occurs down the concentration gradient of the molecule.
Detailed explanation-3: -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).
Detailed explanation-4: -This spread of particles through random motion from an area of high concentration to an area of lower concentration is known as diffusion.