In passive transport, molecules move from an area of _____________ concentration to an area of _______________ concentration.

Question

BlackTom AI · Accepted Answer

Let's analyze each answer choice in the context of passive transport.
Option a: 'a. high to low' correctly reflects the movement along a concentration gradient from regions of higher concentration to lower concentration, which is the hallmark of passive transport processes such as diffusion and facilitated diffusion.
Option b: 'b. high to higher' would imply movement from a higher concentration to an even higher concentration, which does not occur spontaneously under passive transport; such a scenario would require energy input or a different driving mechanism.
Option c: 'c. low to lower' describes movement from a lower concentration to an even lower concentration, which is the reverse of the typical gradient used in passive transport and would not be favored without active processes driving it.
Option d: 'd. low to high' indicates movement from low concentration to high concentration, which is against the natural concentration gradient and requires energy input (active transport) rather than passive diffusion.
In summary, passive transport exploits the natural gradient, moving substances from regions of higher concentration to regions of lower concentration, aligning with option a.

In passive transport, molecules move from an area of _ concentration to an area of ___ concentration.单项选择题

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In passive transport, molecules move from an area of _____________ concentration to an area of _______________ concentration.单项选择题