BIOMOLECULES AND ENZYMES

BIOLOGY

PROTEINS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
From what are constructed out proteins?
A
D-alfa-amino acids
B
aminoacids
C
L-alfa-amino acids
D
L-beta-amino acids
Explanation: 

Detailed explanation-1: -Proteins are natural polymer of −amino acids. A definite sequence of amino acids form a specific protein. Two or more than two amino acids bind to give peptide bond. Proteins are polypeptide, which loses its biological activity by physical or chemical changes.

Detailed explanation-2: -Within a protein, multiple amino acids are linked together by peptide bonds, thereby forming a long chain. Peptide bonds are formed by a biochemical reaction that extracts a water molecule as it joins the amino group of one amino acid to the carboxyl group of a neighboring amino acid.

Detailed explanation-3: -The common property of all proteins is that they consist of long chains of -amino (alpha amino) acids.

Detailed explanation-4: -Each molecule contains a central carbon (C) atom, called the -carbon, to which both an amino and a carboxyl group are attached. The remaining two bonds of the -carbon atom are generally satisfied by a hydrogen (H) atom and the R group. Amino acids function as the building blocks of proteins.

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