<span>1. Replication by means of complementary base-pairing. (This is mentioned in the W&C paper).
I think that's about it. Since you have to come up with two more, try these:
2. Transcription to RNA, also by means of complementary base-pairing
3. Not getting into a tangled mess. The double-stranded nature meant
that the bases weren't "open" which would lead to folding back on itself
to make partially double-stranded regions the way RNA does.</span>
4) Carbon Dioxide (CO2)
This gaseous evolution or precipitation of CO2 gas during yeast fermentation, causes the bread to "rise" as the CO2 gas is formed, since gas is less dense than solids and liquids.
A good example of endosymbiosis is the mitochondria. Three pieces of evidence that suggest the mitochondria was not an original organelle in cells are:
1. They have their own membranes
2. They reproduce by pinching in half which is very similar if not the same to binary fission of bacteria
3. They have their own genomes which are passed off to the offspring.
The purpose<span> of a </span>salt bridge<span> is not to move electrons from the electrolyte, rather it's to maintain charge balance because the electrons are moving from one-half </span>cell<span> to the other. The electrons flow from the anode to the cathode.</span>