Vitamins are organic substances because you get your vitamin D from the sun and the sun is not artificial is it. So that is false
In both of the stages of photosynthesis and in aerobic respiration, glucose is the energy used to create ATP. the gluclose thingy
The endosymbiotic theory is described that the the primitive eukaryotic cell has ingested a prokaryote to become the mitochondria and the chloroplast. The mitochondria is actually a primitive prokaryote capable of performing cellular respiration. According to this theory, the mitochondria (coming from a primitive prokaryote) must have two membranes, an inner membrane and an outer membrane.
<em>Chloroplasts also have two cell membranes. </em>
So It is like how many ways you can arrange the four amino acid !
By maths it is 4! (four factorial)
means 4×3×2×1 = 24
so 24 types of peptide can be formed by arranging these amink acids !!