A protein molecule is 20 amino acid units long. There are 6 different amino acids in the chain. How many different types of tRNA (at least) are required to assist in the synthesis of this molecule?
1. A baby with type AB blood is born in to a family where the mother has type B blood and the father has type O blood. Determine whether the husband is the biological father of the baby? and explain your answer?
5, Why does a damaged cartilage heal very slowly?
6, What is Osteon or Haversian system? Describe the main function and it's different structural parts.