Biological systems use buffers to maintain pH

Biological systems use buffers to maintain pH - S HANTH I N...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
SHANTHINI ARUMUGAM Lab 1 1 Biological systems use buffers to maintain pH. A buffer is a solution that resists a significant change in pH upon addition of an acid or a base. Chemically, a buffer is a mixture of a weak acid and its conjugate base. Many chemical reactions are affected by the acidity of the solution in which they occur. In order for a particular reaction to occur or to occur at an appropriate rate, the pH of the reaction medium must be controlled. Such control is provided by buffer solutions, which are solutions that maintain a particular pH. Biochemical reactions are especially sensitive to pH. Most biological molecules contain groups of atoms that may be charged or neutral depending on pH, and whether these groups are charged or neutral has a significant effect on the biological activity of the molecule. In physiological systems where the pH is near neutrality, the amino group of an amino acid will be protonated and the carboxylic acid group will be deprotonated. This is called the zwitterion form. Acidosis refers to having an excessive amount of acid in the blood. The two types of
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 2

Biological systems use buffers to maintain pH - S HANTH I N...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online