Which of the following statements about the process of digestion is correct ?
I. Carbohydrates in the chyme are hydrolyzed by pancreatic amylase into monosaccharides directly .
II. Nucleases in the intestinal juice act on nucleic acids to from nucleotides and nucleosides .

Options

A. Both I and II are correct
B. Both I and II are wrong
C. I is correct and II is wrong
D. II is correct and I is wrong

Answer

To determine which of the statements about the process of digestion is correct, let's analyze each statement step by step.

### Step 1: Analyze Statement I
**Statement I:** "Carbohydrates in the chyme are hydrolyzed by pancreatic amylase into monosaccharides directly."

- **Understanding Chyme:** Chyme is the semi-fluid mass of partially digested food that is expelled by the stomach into the small intestine. It contains carbohydrates, proteins, and fats mixed with gastric juices.
- **Role of Pancreatic Amylase:** Pancreatic amylase is an enzyme secreted by the pancreas into the small intestine. Its primary function is to break down starch (a polysaccharide) into disaccharides (like maltose).
- **Conclusion for Statement I:** Pancreatic amylase does not convert carbohydrates directly into monosaccharides; it first converts them into disaccharides. Therefore, this statement is **incorrect**.

### Step 2: Analyze Statement II
**Statement II:** "Nucleases in the intestinal juice act on nucleic acids to form nucleotides and nucleosides."

- **Understanding Nucleases:** Nucleases are enzymes that break down nucleic acids (DNA and RNA) into smaller units.
- **Location of Nucleases:** Nucleases are primarily found in pancreatic juice, not intestinal juice. They act on nucleic acids to produce nucleotides. Further breakdown of nucleotides into nucleosides is performed by other enzymes (nucleotidases and nucleosidases).
- **Conclusion for Statement II:** Since nucleases are not in the intestinal juice but in pancreatic juice, this statement is also **incorrect**.

### Final Conclusion
Both statements I and II are incorrect regarding the digestion process.

### Summary of the Solution
- **Statement I** is incorrect because pancreatic amylase converts carbohydrates into disaccharides, not directly into monosaccharides.
- **Statement II** is incorrect because nucleases are found in pancreatic juice, not intestinal juice.