Which one of the following hydrolyses internal phosphodiester bonds in a polynucleotide chain ?
- Lipase
- Exonuclease
- Endonuclease
- Protease
The Correct Option is C
Solution and Explanation
Endonucleases are enzymes that hydrolyze internal phosphodiester bonds in a polynucleotide chain, cleaving the DNA or RNA at specific locations within the molecule. Exonucleases, on the other hand, remove nucleotides from the ends of the molecule, not from internal positions. Lipases and proteases are not involved in nucleic acid hydrolysis; lipases are involved in lipid metabolism, and proteases are enzymes that cleave peptide bonds in proteins.
So, the correct option is (C): Endonuclease
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Concepts Used:
Enzymes - Biology
Enzymes are proteins that help accelerate metabolism or the chemical reactions in our bodies. They build some substances and decompose others. All living creatures have enzymes.
Our bodies naturally build enzymes. But enzymes are also in mass produce products and food.
One of the most important roles of enzymes is to succor digestion. The process of turning the food that we eat into energy is called digestion. For instance, there are enzymes in our saliva, pancreas, stomach, and intestines. They decompose fats, proteins, and carbohydrates. Enzymes make use of these nutrients for growth and cell repair.