Question

Amino acid chains are primarily held together by:

		phosphodiester bonds
		peptide bonds
		electrical charges
		sulfur bridges

The PCR technique amplifies random regions of the genome

True

False

Answer 1

Peptide bond

Amino acids are connected to each other by covalent bond called as peptide Bond. It is formed between carboxyl end of one amino acid and amino end of the Other amino acid. There is a loss of one molecule of water during the formation of one peptide Bond. This is the reason Protein synthesis is also called as dehydration or condensation synthesis.

False

PCR is used to amplify certain segment of DNA which are specific. We design primers which are complementary to those specific regions of DNA. Therefore the amplification is also specific. The primers bind to the region where they are complementary and not bind to other regions. This is the reason we get only the amplified copy of the desired gene and not whole fragment.

Please rate.