Select the total number of false statement from the following
(i) The globular head is an active ATPase enzyme and has binding sites for ATP and active sites for Myosin.
(ii) Each Myosin filament is also a polymerized protein
(iii) Many monomeric proteins celled Meromyosins constitute one thick filament.
(iv) Each meromyosin has two important parts, a globular head with a short arm and a tail, the former being called the heavy meromyosin (HMA) and the latter, the light meromysin (LMN).
(v) The HMM component, i.e., the head and short arm projects outwards at regular distance and angle from each other from the surface of a polymerized myosin filament and is known as cross arm
(a) 5
(b) 4
(c) 2
(d)1

Options

A. 5
B. 4
C. 2
D. 1

Answer

To determine the total number of false statements from the provided options regarding myosin filaments, we will analyze each statement step by step.

### Step-by-Step Solution:

1. **Statement (i)**: "The globular head is an active ATPase enzyme and has binding sites for ATP and active sites for Myosin."
- **Analysis**: The globular head of myosin does have ATPase activity and binding sites for ATP. However, it has active sites for **actin**, not for myosin. Therefore, this statement is **false**.

2. **Statement (ii)**: "Each Myosin filament is also a polymerized protein."
- **Analysis**: Myosin filaments are indeed made up of polymerized proteins. This statement is **true**.

3. **Statement (iii)**: "Many monomeric proteins called Meromyosins constitute one thick filament."
- **Analysis**: Meromyosins are the components that make up the thick myosin filament. This statement is **true**.

4. **Statement (iv)**: "Each meromyosin has two important parts, a globular head with a short arm and a tail, the former being called the heavy meromyosin (HMM) and the latter, the light meromyosin (LMN)."
- **Analysis**: This statement correctly describes the structure of meromyosin, where the globular head and short arm are indeed referred to as heavy meromyosin, and the tail is light meromyosin. Thus, this statement is **true**.

5. **Statement (v)**: "The HMM component, i.e., the head and short arm projects outwards at regular distance and angle from each other from the surface of a polymerized myosin filament and is known as cross arm."
- **Analysis**: This statement accurately describes the structure of the myosin filament and the arrangement of the HMM component. Therefore, this statement is **true**.

### Summary of Findings:
- Total false statements: 1 (Statement i)
- Total true statements: 4 (Statements ii, iii, iv, v)

### Final Answer:
The total number of false statements is **1**. Therefore, the correct option is **(d) 1**.

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