Mark the correct statement

Options

A. In lower one third part of oesophagus both Myenteric and Meissner's plexus are absent
B. Carboxypeptidase is exopeptidase acting on 'N' terminal end of peptide chain
C. Galactosemia is metabolic genetic disorder due to deficiency of the enzyme uridyl transferase
D. Nucleotidase and nucleosidase enzymes are present in pancreatic juice

Answer

To solve the question "Mark the correct statement," we will analyze each of the provided options step by step.

### Step 1: Analyze the First Statement
**Statement:** In the lower one-third part of the esophagus, both myenteric and submucosal plexus are absent.

- **Explanation:** The myenteric plexus (Auerbach's plexus) and the submucosal plexus (Meissner's plexus) are parts of the enteric nervous system (ENS) that control gastrointestinal motility and secretions. In the lower one-third of the esophagus, both plexuses are indeed present, not absent. Therefore, this statement is **incorrect**.

### Step 2: Analyze the Second Statement
**Statement:** Carboxypeptidase is an exopeptidase acting at the terminal end of the peptide chain.

- **Explanation:** Carboxypeptidase is an exopeptidase that specifically acts on the C-terminal end of peptide chains. However, the statement is misleading as it implies it acts on the terminal end in a general sense without specifying that it is the C-terminal. Therefore, this statement is also **incorrect**.

### Step 3: Analyze the Third Statement
**Statement:** Galactosemia is a metabolic genetic disorder due to deficiency of the enzyme uridyl transferase.

- **Explanation:** Galactosemia is indeed a metabolic genetic disorder that arises from the deficiency of the enzyme galactose-1-phosphate uridyltransferase. This enzyme is crucial for the metabolism of galactose. Therefore, this statement is **correct**.

### Step 4: Analyze the Fourth Statement
**Statement:** Nucleotides and nucleosidase enzymes are present in pancreatic juice.

- **Explanation:** Nucleotides and nucleosidase enzymes are primarily found in intestinal juice, not pancreatic juice. Pancreatic juice contains other enzymes like proteases, lipases, and amylases. Therefore, this statement is **incorrect**.

### Conclusion
After analyzing all four statements, the only correct statement is:
**Galactosemia is a metabolic genetic disorder due to deficiency of the enzyme uridyl transferase.**

### Final Answer
The correct statement is: **Galactosemia is a metabolic genetic disorder due to deficiency of the enzyme uridyl transferase.**

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