Sly7

Supose there are no deep cuts inside the mouth leading to the stomach, we will digest almost any bacteria or microbe that enters into the stomach (pH 2) when we swallow or eat. We won't get rid of the microbes so it is the body's defense system to digest harmful bacteria.

Well, in photosynthesis an electron must first be exited by light to gain energy, then it falls down the ETC and the cell can harness the energy that was given off (complicated explanation in between). In cellular respiration the electrons are being dropped off by carriers at the ETC, with O1/2 sitting at the bottom of the chain, pulling at the dropped off electrons as they drop down the chain. That's one of the many differences

The blood will begin to move freely downward (if the body was laying on the back, the blood would move to the back). This is because after the heart has stopped beating blood has nothing affecting it exept gravity. Eventually it solidifies and the tissues dry up, but as you see in crime scenes, if a body has been deceased for a couple of hours there is noticible coloration at the lowest point