Find out all the protiens that make eukaryotic flegellum.

Options

A. Nexin , tubulin and flagellin
B. Tubulin nexin , dynein and flagellin
C. Actin , myosin , dymein , nexin and tubulin
D. Dynein , tubulin and nexin

Answer

To find out all the proteins that make up the eukaryotic flagellum, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Structure of Eukaryotic Flagellum**:
- The eukaryotic flagellum is a long, hair-like structure that extends from the surface of eukaryotic cells. It is primarily involved in locomotion.

2. **Identifying the Microtubule Arrangement**:
- The flagellum exhibits a characteristic "9 + 2" arrangement of microtubules. This means there are 9 outer doublet microtubules surrounding 2 central singlet microtubules.

3. **Key Proteins in Eukaryotic Flagellum**:
- The primary proteins that are involved in the structure and function of the eukaryotic flagellum include:
- **Dynein**: This is a motor protein that generates the force necessary for flagellar movement by sliding the microtubules against each other.
- **Tubulin**: This protein forms the microtubules themselves, which are essential for the structural integrity of the flagellum.
- **Nexin**: This protein connects the outer doublet microtubules and helps maintain the structure of the flagellum.
- **Radial Spokes**: These are protein complexes that connect the outer doublets to the central pair of microtubules and are involved in regulating the movement of the flagellum.

4. **Excluding Incorrect Proteins**:
- It is important to note that proteins such as **flagellin** (which is found in prokaryotic flagella) and **actin/myosin** (which are primarily involved in muscle contraction) are not found in eukaryotic flagella.

### Conclusion:
The proteins that make up the eukaryotic flagellum include **dynein**, **tubulin**, **nexin**, and components of the **radial spokes**.