THE CELL
TRANSPORT INTO AND OUT OF THE CELL
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
It makes the results easier to compare as all of the potatoes have the same mass at the start
|
|
|
It makes the results easier to compare as the potatoes have different starting masses
|
|
|
It makes the results more accurate
|
|
|
It makes it a fair test
|
Detailed explanation-1: -The potato cylinders placed in strong sucrose solutions will lose mass/length as water will have moved from an area of high concentration (inside the potato cells) to an area of lower concentration (outside the potato cells).
Detailed explanation-2: -Why did you calculate the percent change in mass rather than simply using the change in mass? Calculating the percent change is more accurate when we are looking for a cross comparison between multiple sets of data. Finding the mass difference is only relevant for sets of data that started with the same mass.
Detailed explanation-3: -Potatoes are made of cells and their cells have cell walls that act as semipermeable membranes. The 0 grams saltwater solution is hypotonic compared to the solution inside the potato cells, which means that it contains less salts and more water.