00:03
So if we average the number of carbon, hydrogen, oxygen, and nitrogen atoms, and all the side chains of 20 amino acids, we find that carbon is equal to three, hydrogen is equal to six, nitrogen is equal to one -half, and oxygen is also equal to one -half.
00:33
The main chain has carbon, two carbons, and two hydrogens, two lost during peptide bond formation, and one nitrogen and one oxygen, one lost during peptide formation.
00:47
This gives us the general formula for peptides of c5, h .8, o2, and two.
01:05
If we make a similar estimate for the base pair of sugars and lipids, taking phospholitinolethylalanine, c9 h -11, 06, and 4, c5h1005, and c5h1001, respectively, we can find a ratio of different constituents.
01:29
So from a table, we know that there are 2 .4 times 10 to the 6th protein molecule.
01:46
And assuming the average protein content is 300 amino acids, then we get about 7 times 10 to the 8 molecules, and we have to compare this number to the number bases in phospholipids of a cell.
02:06
On the table, there's different classes of rna that sum roughly to 3 times 10 to the fifth rna molecules.
02:13
Combining this with the dna content from the genome itself, we then get a base equivalent of 10 to the 8, base pairs in a cell.
02:21
As the result, we can see the nucleic acids are the only small components of the chemical composition of a cell with respect to amino acids...