The rate of diffusion of a molecule into a cell is affected by which of the following factors? Multiple Choice Sower concentration of a molecule outside of the cell Steep concentration gradiont with a high amount of the molecule outside the cell as inside the cell Steep concentration gradient with a high amount of the molecule inside the cell

To determine which factors affect the rate of diffusion of a molecule into a cell, let's analyze each option: 1. **Lower concentration of a molecule outside of the cell**: - If the concentration of the molecule outside the cell is lower, the rate of diffusion into the cell will be slower. This is because diffusion occurs from an area of higher concentration to an area of lower concentration. Therefore, this option negatively affects the rate of diffusion. 2. **Steep concentration gradient with a high amount of the molecule outside the cell as compared to inside the cell**: - A steep concentration gradient (where there is a significantly higher concentration of the molecule outside the cell than inside) will enhance the rate of diffusion. Molecules will move from the area of higher concentration (outside) to the area of lower concentration (inside), thus increasing the rate of diffusion. 3. **Steep concentration gradient with a high amount of the molecule inside the cell**: - If there is a high concentration of the molecule inside the cell compared to outside, the concentration gradient is reversed. This would slow down or even prevent diffusion into the cell, as molecules would tend to move from inside to outside rather than the other way around. Based on this analysis, the correct answer is: - **Steep concentration gradient with a high amount of the molecule outside the cell as compared to inside the cell**. This factor positively affects the rate of diffusion into the cell.