Answer:
A. Buffers absorb excess hydrogen and hydroxide ions to prevent increases or decrease in pH. An example is the bicarbonate system in human body.
Explanation:
In nature, buffer is a known to be a solution capable of maintaining the pH of an ionic solution i.e. resist alteration to the acidic or basic content, by neutralizing excess hydrogen ions (H+) or hydroxyll ions (OH-) added to it.
Buffers, with the aid of their weak acid/conjugate base or weak base/conjugate acid, absorb/react with excess hydrogen and hydroxide ions to prevent increases or decrease in pH. An example of buffer in humans is the bicarbonate buffer system in that maintains stable pH in the human blood.
The standard unit of radiation related to biological hazards is known as the Roentgen.
The basic components of amino acid are:
o Nitrogenous Bases: It is derived from the Purines (Adenine and Guanine) and Pyrimidines (Cytosine, Uracil and Thymine).
o Sugar Moiety: They are present in RNA and DNA in the β-furanose.
o Phosphorous acid: It is formed with the hydroxyl group and divalent oxygen atom.
Hence, they are made up of nitrogen bases, sugars, and phosphates
