Xray diffraction images produced by Franklin showed that DNA is a double helix.
Answer: is enclosed by two membranes, be responsible for protein synthesis, has a folded inner membrane called cristae
Explanation:
Mitochondria are considering organelles(mitochondrion, singular) which are bounded.
The mitochondria are enclosed by two membranes and have a folded inner membrane called cristae(crest or plume) and it is there to give the inner membrane shape.
I only know one for the first one, don't be mad, please.
1. I'm pretty sure one of them is membrane
2. A cell can die through infection, poisoning, overheating, or even lack of oxygen.
3. I think it depends on how fragile the membrane of the cell is.
I'm so so so sorry if these didn't help, I'm trying my best, lol.