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Biomolecules

Question

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What is the effect of pH on the activity of enzymes?

Solution

Enzymes are highly sensitive to a change of pH value. Since enzymes are proteins, pH change greatly affect the ionic character of amino and carboxylic acid groups on the protein surface. This change affects the catalytic nature of an enzyme also. The enzymes function within a narrow range of pH value. For example,
Enzyme Pepsin Ptyalin Trypsin pH range 1.8 to 2.2 5.6. to 6.6 7.5. to 8.3
The low or high pH value can cause considerable denaturation of the protein and hence makes enzyme protein inactive.

Some More Questions From Biomolecules Chapter

What are the expected products of hydrolysed of lactose?

How do you explain the absence of aldehyde group in the penta acetate of D-glucose?

The melting points and solubility of water of amino acids are generally higher than that of the corresponding halo acids. Explain.

Where does the water present in the egg go after the boiling the egg?

Why cannot vitamin C be stored in our body?

What products would be formed when a nucleotide from DNA containing thymine is hydrolysed?

When RNA is hydrolysed, there is no relationship among the quantities of different bases obtained. What does this fact suggest about the structure of RNA?

What is a biomoiecule?

Define carbohydrates.

Give one example each of (i) Reducing sugar and (ii) Non-reducing sugar.

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