Hi! they are mainly composed of phospholipids and proteins. :)
The functional groups that are bounded to the central carbon of every free amino acid monomers are CARBOXYL GROUP [COOH] AND AMINO GROUP [NH2].
A typical amino acid is made up of a central carbon which is attached to an amino group, a carboxyl group, a unique R group and a hydrogen atom.
Diffusion is the name of the process by which molecules naturally flow from an area of higher concentration to one of lower concentration.
Answer:
The central angle is 20% of 360°, that is
central angle = \frac{20}{100}
100
20
× 360° = 0.2 × 360° = 72° → C
Transitional Fossils Do NOT Exist
-Evolution Is A Slow Process