Trypsin, insulin and morphine are respectively,

Options

A. a protein, enzyme and alkaloid
B. an alkaloid, enzyme and protein
C. an enzyme, hormone and alkaloid
D. a hormone, alkaloid and protein

Answer

To answer the question regarding trypsin, insulin, and morphine, we will analyze each substance step by step.

### Step 1: Identify Trypsin
- **Definition**: Trypsin is a digestive enzyme that helps break down proteins in the small intestine.
- **Classification**: It is classified as a **proteolytic enzyme** because it catalyzes the hydrolysis of peptide bonds in proteins.

### Step 2: Identify Insulin
- **Definition**: Insulin is a hormone produced by the pancreas that regulates blood sugar levels.
- **Classification**: It is classified as an **endocrine hormone** because it is secreted directly into the bloodstream and affects various tissues in the body.

### Step 3: Identify Morphine
- **Definition**: Morphine is a potent pain-relieving drug derived from the opium poppy.
- **Classification**: It is classified as an **opioid drug** and is also considered an **alkaloid** due to its natural origin from the poppy plant.

### Conclusion
- **Final Classification**:
- Trypsin: **Proteolytic enzyme**
- Insulin: **Hormone**
- Morphine: **Opioid drug (alkaloid)**

### Answer
Trypsin, insulin, and morphine are respectively classified as a **proteolytic enzyme**, **hormone**, and **opioid drug**.

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