Question: 78: The incorrect statement regarding enzymes is
(1) Enzymes are polysaccharides.
(2) Enzymes are very specific for a particular reaction and substrate.
(3) Enzymes are biocatalysts.
(4) Like chemical catalysts enzymes reduce the activation energy of bio processes.
Answer: Option (1)
Explanation:
Enzymes are biological catalysts that speed up biochemical reactions in living organisms.
Most enzymes are proteins, and a few enzymes are RNA molecules called ribozymes.
They are not polysaccharides, which are carbohydrates made of long chains of monosaccharide units.
Hence, the statement that enzymes are polysaccharides is incorrect.
Enzymes are highly specific in nature, meaning each enzyme catalyses a particular reaction involving a specific substrate.
Enzymes function as biocatalysts and increase the rate of biochemical reactions without being consumed.
Like chemical catalysts, enzymes lower the activation energy of biochemical processes.
Therefore, option (1) is the incorrect statement regarding enzymes.