PHYSIOLOGY
SYNAPTIC PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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This is the tendency of molecules to move from an area of higher concentration to an area or lower concentration
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Uses adenosine triphosphate to transport substances across the plasma membrane
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Can be classified as either facilitated diffusion or simple diffusion
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A form of passive transport
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Detailed explanation-1: -Active transport uses energy to transport molecules across the plasma membrane. This uses energy from ATP.
Detailed explanation-2: -Primary active transport, also called direct active transport, directly uses chemical energy (such as from adenosine triphosphate or ATP in case of cell membrane) to transport all species of solutes across a membrane against their concentration gradient.
Detailed explanation-3: -The correct answer is b. Molecules will move from high to low concentration until equilibrium is reached. This is a passive process, so it does not require energy.
Detailed explanation-4: -Substances that are transported across the cell membrane by primary active transport include metal ions, such as Na+, K+, Mg2+, and Ca2+. These charged particles require ion pumps or ion channels to cross membranes and distribute through the body.