A person is eating boiled potato, which food component is found in it ? [2000]a)DNA which gets digested by pancreatic DNAaseb)Lactose which is indigestiblec)Starch which does not get digestedd)Cellulose which is digested by intestinal celluloseCorrect answer is option 'A'. Can you explain this answer?

Question

Answer

Ans is a

Answer

Boiled potatoes do not contain lactose; and cellulose which is present is not digested in man as he lacks cellulase. Starch is the major food component which is present in boiled potato and is broken down into maltose and isomaltose due to salivary amylase and is hence digested. DNA is broken down into purines, pyrimidines and sugars by pancreatic nuclease (such as DNAse).

Answer

Anything which cannot be digested cannot serve as 'food'. Therefore, starch and lactose in the present case have been automatically deleted.  Cellulose cannot be digested by human beings thus option (c) also stands rejected. Pancreatic juice can digest DNA which is the component of every cell.

Answer

< b='' />Answer: < />
The correct answer is option 'A': DNA, which gets digested by pancreatic DNAase.

< b='' />Explanation: < />
When a person is eating boiled potato, the food component found in it is DNA. However, it is important to note that the DNA found in food is not the same as the DNA found in living cells. Food DNA is derived from the cells of the organism from which the food is obtained, in this case, the potato.

Potatoes are a rich source of starch, a complex carbohydrate that serves as an important energy source for the body. Starch is composed of long chains of glucose molecules that are digested by enzymes in the body to release glucose for energy. However, in this question, the focus is on DNA, which is also present in potatoes.

< b='' />DNA in Food: < />
DNA (deoxyribonucleic acid) is a molecule that carries genetic information in living cells. It is present in the nucleus of cells and plays a crucial role in the inheritance of traits. However, DNA can also be found in food, although it is not as abundant as starch.

< b='' />Pancreatic DNAase: < />
Pancreatic DNAase is an enzyme produced by the pancreas that breaks down DNA molecules into smaller fragments. It is secreted into the small intestine where it helps in the digestion of dietary DNA. The small fragments of DNA are further broken down by other enzymes into nucleotides, which can be absorbed by the body.

< b='' />Digestion of DNA: < />
When we consume food containing DNA, such as boiled potato, the DNA molecules are exposed to the acidic environment of the stomach. However, stomach acid does not break down DNA effectively. The next step in the digestion of DNA occurs in the small intestine.

When the food reaches the small intestine, pancreatic DNAase is released and it begins to break down the DNA molecules into smaller fragments. These fragments are further broken down by other enzymes, such as nucleases, into nucleotides. Nucleotides are the building blocks of DNA and RNA.

< b='' />Conclusion: < />
In conclusion, when a person eats boiled potato, the food component found in it is DNA. However, it is important to note that the DNA in food is not the same as the DNA found in living cells. The DNA in food is digested by pancreatic DNAase and other enzymes in the small intestine, breaking it down into smaller fragments and ultimately into nucleotides for absorption by the body.

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