AP BIOLOGY

Detailed explanation-1: -Buffers are chemicals that help a liquid resist changing its acidic properties when other chemicals are added that will normally cause a change in these properties. Buffers are essential for living cells. This is because buffers maintain the right pH of a liquid.

Detailed explanation-2: -A buffer is a solution that resists changes in pH upon the addition of a small amount of strong acid or strong base.

Detailed explanation-3: -The purpose of a buffer in a biological system is to maintain intracellular and extracellular pH within a very narrow range and resist changes in pH in the presence of internal and external influences.

Detailed explanation-4: -Buffer solutions contain high concentrations of both a weak acid and its conjugate base (or a weak base and its conjugate acid). Because these components can neutralize added H⁺ or OH⁻, buffers are highly resistant to changes in pH.

Detailed explanation-5: -Buffer Solution is a water solvent based solution which consists of a mixture containing a weak acid and the conjugate base of the weak acid, or a weak base and the conjugate acid of the weak base. They resist a change in pH upon dilution or upon the addition of small amounts of acid/alkali to them.