Question

A protein ion with a molecular weight of 10,000 Daltons carried a charge of 5+ and was subjected to mass spectrometric analysis. Calculate its mass to charge ratio.

• A. 2001
• B. 2000
• C. 2501
• D. 5001

Hint:

For calculations involving mass-to-charge ratios, make sure you use the right method, and also do the calculation carefully to prevent errors.

Answer 1

The Correct Option is B

Mass-to-Charge Ratio (m/z): This value is derived by dividing an ion's mass (in Daltons) by its charge. For a protein ion with a molecular weight of 10,000 Daltons and a charge of 5+, the mass-to-charge ratio is calculated as (10,000 Daltons)/5, resulting in 2000.