Which one of the following is an example of simple diffusionSelect one:a. Glucose transport from intestinal lumen into the cellsb. Sodium influx via voltage gated sodium channelc. Amino acid transport from intestinal lumen into the cellsd. Glucose transport from intestinal cells to the bloodClear my choice
Question
Which one of the following is an example of simple diffusionSelect one:a. Glucose transport from intestinal lumen into the cellsb. Sodium influx via voltage gated sodium channelc. Amino acid transport from intestinal lumen into the cellsd. Glucose transport from intestinal cells to the bloodClear my choice
Solution
None of the options provided (a. Glucose transport from intestinal lumen into the cells, b. Sodium influx via voltage gated sodium channel, c. Amino acid transport from intestinal lumen into the cells, d. Glucose transport from intestinal cells to the blood) are examples of simple diffusion.
Simple diffusion refers to the process where molecules or ions move from an area of higher concentration to an area of lower concentration, directly across the cell membrane, without the need for energy or assistance from transport proteins.
The options provided all involve transport of substances that require transport proteins or channels to move across the cell membrane, which is characteristic of facilitated diffusion or active transport, not simple diffusion.
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