The SDS detergent solubilizes the phospholipids and proteins
Polar ice caps are the coldest place on the earth. The temperature here is very low, always below 0 degree Celsius on an average.
Polar ice caps has no vegetation because:
1. Ice is present on the ground permanently.
2. Water present in the soil remains frozen and thus, unavailable for plants to grow.
3. Cold weather that do not support vegetation.
The same is true for our skin and our liver cells. Or our brain and muscle cells. Or any of the other 300 or so different cell types. These cells are different because they use the same set of genes differently.
Marco places a toy car at the top of a ramp. He releases the car and measures how long it takes for the car to reach the bottom of the ramp. Then, he returns the car to the top of the ramp, releases the car again, and makes an additional measurement.