Apeptide bond is found in which type of biological molecule

A peptide bond is found between two amino acid biological molecules. Peptide bonds form long chains of amino acids, which are known as proteins by living organisms. Proteins are playing many important roles in our body such as structural support, recognizing molecules in the environment, helping to catalyze important reactions, etc.

Peptide bond form through the dehydration reaction. When two hydrogens and oxygen are removed from the molecule there two amino acids can bond together. Here 1 amino acid shows a loss of the hydroxyl group in the reaction and shows a carboxyl group to the reaction. Amino group present on the other amino acid loses hydrogen. Then the nitrogen is substituted in the place of the hydroxyl group, leads to the formation of peptide bonds.

yes

no

blue is scattered more than other colors because it travels as shorter, smaller waves. this is why we see a blue sky most of the time.

estuaries are the partially enclosed coastal bodies of brackish water formed at the mouth of sea where river meets an ocean. it is a transition zone between river and sea water so estuaries are influenced to both marine environment such as tides, waves and to riverine such as flow of fresh water and sediments. the mixing of sea and fresh water provide high level of nutrients, making estuaries a high product habitats.

many estuaries suffers degradation from a variety of human activities like erosion from deforestation, overgrazing, overfishing, drainage and eutrophication.

so from the above statement answers will be

1. false as estuaries are formed due to both brackish and freshwater.

2.true, due to high productivity estuaries are breeding ground for many marine species.

3. direct and indirect activities of man that contribute to pollution and deposition of sediments.