Jun Ming puts a slide of a eukaryotic cell under a microscope. The following diagram represents what Jun Ming observes. Which of the following choices best describes the structures labeled A?

a) These structures do not have membranes.
b) These structures transport substances throughout the cell.
c) These structures produce energy for the cell in the form of ATP.
d) These structures contain DNA and have a folded inner membrane.

correct answer is option a.

tropopause, stratopause and mesopause have all in common aspect that is point of maximum temperature in its layer of the atmosphere. all layers of atmosphere observe abrupt change in temperature. tropopause is the boundary between troposphere and stratosphere. stratopause is the boundary between stratosphere and mesosphere. mesopause is the boundary between mesosphere and thermosphere. these all boundaries are ranges between altitude of 0 to 80 km.

answer; i believe that the correct answer is (light);

2%? i tried finding the exact sorry if it's not 100% correct ; -;

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link: