Assertion : All enzymes are made up of proteins and all proteins have three dimensional structures.
Reason : Secondary structures of proteins are sequence of amino acids.

Options

A. If both assertion & Reason are ture & the Reason is a correct explanation of the Assertion
B. If both Assertion & Reason ar True but Reason is not a correct explantation of the Assertion
C. If Assertion is True but the Reason is False
D. If both Assertion & Reason are false

Answer

To solve the assertion and reasoning question, we need to evaluate both the assertion and the reason provided.

### Step 1: Analyze the Assertion
The assertion states: "All enzymes are made up of proteins and all proteins have three-dimensional structures."

- **Part 1**: "All enzymes are made up of proteins."
- This statement is **not entirely correct**. While most enzymes are proteins, there are exceptions, such as ribozymes, which are RNA molecules that also have catalytic activity.

- **Part 2**: "All proteins have three-dimensional structures."
- This statement is **correct**. Proteins indeed fold into specific three-dimensional shapes, which are crucial for their function.

### Step 2: Analyze the Reason
The reason states: "Secondary structures of proteins are sequences of amino acids."

- This statement is **incorrect**. The **primary structure** of proteins refers to the sequence of amino acids. The secondary structure refers to local folded structures that form within a protein due to hydrogen bonding, such as alpha-helices and beta-sheets.

### Step 3: Conclusion
Based on the analysis:
- The assertion is **partially true** (the first part is false, but the second part is true).
- The reason is **false**.

Thus, the correct answer is that the assertion is true, but the reason is false.

### Final Answer
The correct option is: **Assertion is true but the reason is false.**

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