Question

In TMV (Tobacco Mosaic Virus), serially the Length, diameter, molecular weight, and capsomers number are:

• A. $100\,{nm}, 4\,{nm}, 39\times10^6\,{daltons}, 158$
• B. $300\,{nm}, 18\,{nm}, 39\times10^6\,{daltons}, 2130$
• C. $300\,{nm}, 18\,{nm}, 39\times10^6\,{daltons}, 2310$
• D. $18\,{nm}, 4\,{nm}, 9\times10^6\,{daltons}, 2310$

Hint:

Studying the structural details of viruses like TMV can aid in understanding virus assembly and infection mechanisms, important for virology and vaccine development.

Answer 1

The Correct Option is B

Step 1: Length and diameter: In the case of the Tobacco Mosaic Virus (TMV), the length is approximately 300 nm, and the diameter is about 18 nm. These dimensions are standard for TMV and are used to characterize the virus particle's size. 
Step 2: Molecular weight: The molecular weight of TMV is around 39 million daltons (i.e., \(39 \times 10^6\) daltons). This is a well-known value and corresponds to the virus's protein and nucleic acid components. 
Step 3: Capsomer number: The number of capsomers (protein subunits that form the viral coat) in TMV is typically 2130. This value is significant for understanding the structure of the virus, as it reflects the number of protein subunits required to form the helical structure. 
Conclusion: Based on the above information, the correct matching is 300 nm, 18 nm, \(39 \times 10^6\) daltons, 2130.