Stem Cell Research uses two types of stem cells - Adult and Embryonic - Why is one considered ethical and the other is not?

How do the evolutionary chart and the video support the claim that all living things are made up of cells?

Which of the following is required of a new drug?me

5. what might happen if you were to remove all light from the setup after the discs have all become buoyant? describe what you would see. explain why this would occur with relation to cellular processes like respiration. [referring to an ap biology lab in which spinach discs are placed in a sodium bicarbonate solution and exposed to light.]