BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Amino acids are colourless, crystalline solids. They are soluble in water and solubility varies with R-group of amino acid. They have sharp and low melting points.

Detailed explanation-2: -The amino acids are crystalline solids with surprisingly high melting points. It is difficult to pin the melting points down exactly because the amino acids tend to decompose before they melt. Decomposition and melting tend to be in the 200-300°C range. For the size of the molecules, this is very high.

Detailed explanation-3: -Answer : Due to its existence in the form of zwitter ion, there exists a very strong intermolecular attaction which is responsible for high melting point of amino acid.

Detailed explanation-4: -Crystalline amino acids are of synthetic origin but are exactly the same as those found in naturally occurring proteins. Crystalline amino acids are manufactured by bacteria through fermentation processes.

Detailed explanation-5: -carboxylic acids Because they are internal salts, amino acids are all solids at room temperature, and most of them are soluble in water.