This looks like a dihybrid cross where the expected phenotypic ratio is 9:3:3:1. However, in nature, the numbers cannot be absolut. Let's check it out: 242 purple wrinkled 84 purple smooth 70 yellow wrinkled 24 yellow smooth
Divide all by the smallest number: 242 purple wrinkled / 24 84 purple smooth / 24 70 yellow wrinkled / 24 24 yellow smooth / 24
We have 10.1 purple wrinkled which is near to 9 3.5 purple smooth which is near to 3 2.9 yellow wrinkled which is near to 3 1 yellow smooth
Lipids are good for making the cell membrane because they are stronger and block out things that should not be getting in out, for instance lipids mainly only let water and gases pass through.