the linking of the two strands of a DNA molecule by means of hydrogen bonds between the bases of the nucleotides. Adenine always pairs with thymine and cytosine with guanine. See DNA.
The balance between the acid and alkaline elements present in the blood and body ?uids.
The normal hydrogen ion concentration of the PLASMA is a constant pH 7·4, and the lungs and kidneys have a crucial function in maintaining this ?gure. Changes in pH value will cause ACIDOSIS or ALKALOSIS.... acid base balance
A combination of mechanisms that ensures that the body’s fluids are neither too acid nor too alkaline (alkalis are also called bases).
The body has three mechanisms for maintaining normal acid–base balance: buffers, breathing, and the activities of the kidneys. Buffers are substances in the blood that neutralize acid or alkaline wastes. Rapid breathing results in the blood becoming less acidic; slow breathing has the opposite effect. The kidneys regulate the amounts of acid or alkaline wastes in the urine.
Disturbances of the body’s acid–base balance result in either acidosis (excessive blood acidity) or alkalosis (excessive blood alkalinity).... acid–base balance
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