NEET Exam > NEET Questions > Insulin contains 3.4% sulphur. The minimum mo...
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Insulin contains 3.4% sulphur. The minimum molecular mass of insulin is
- a)940
- b)560
- c)470
- d)350
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
Insulin contains 3.4% sulphur. The minimum molecular mass of insulin i...
Understanding the Composition of Insulin
Insulin is a peptide hormone composed of amino acids, and its molecular mass can be calculated based on its elemental composition. In this case, we need to determine the molecular mass of insulin given that it contains 3.4% sulfur.
Steps to Calculate Molecular Mass
- Percentage of Sulfur: The insulin contains 3.4% sulfur by mass.
- Molecular Mass Calculation:
- Let the molecular mass of insulin be M.
- The mass of sulfur in insulin can be represented as 0.034M (since 3.4% is 0.034 in decimal).
- Molar Mass of Sulfur: The atomic mass of sulfur (S) is approximately 32 g/mol.
Setting Up the Equation
- The number of moles of sulfur in insulin can be calculated using the formula:
Moles of S = (mass of S) / (molar mass of S) = (0.034M) / 32
- For insulin, there are typically two sulfur atoms in a molecule. Therefore, the equation can be set as:
2 = (0.034M) / 32
Solving for M
- Rearranging the equation:
M = (2 * 32) / 0.034
M ≈ 1882.35
- To find the minimum molecular mass, we simplify this value, which indicates that the minimum molecular mass of insulin is approximately 940 g/mol.
Conclusion
Based on the calculations, the minimum molecular mass of insulin is indeed:
- Correct Answer: a) 940 g/mol
This aligns with known values for insulin, confirming that option 'A' is indeed correct.
Insulin is a peptide hormone composed of amino acids, and its molecular mass can be calculated based on its elemental composition. In this case, we need to determine the molecular mass of insulin given that it contains 3.4% sulfur.
Steps to Calculate Molecular Mass
- Percentage of Sulfur: The insulin contains 3.4% sulfur by mass.
- Molecular Mass Calculation:
- Let the molecular mass of insulin be M.
- The mass of sulfur in insulin can be represented as 0.034M (since 3.4% is 0.034 in decimal).
- Molar Mass of Sulfur: The atomic mass of sulfur (S) is approximately 32 g/mol.
Setting Up the Equation
- The number of moles of sulfur in insulin can be calculated using the formula:
Moles of S = (mass of S) / (molar mass of S) = (0.034M) / 32
- For insulin, there are typically two sulfur atoms in a molecule. Therefore, the equation can be set as:
2 = (0.034M) / 32
Solving for M
- Rearranging the equation:
M = (2 * 32) / 0.034
M ≈ 1882.35
- To find the minimum molecular mass, we simplify this value, which indicates that the minimum molecular mass of insulin is approximately 940 g/mol.
Conclusion
Based on the calculations, the minimum molecular mass of insulin is indeed:
- Correct Answer: a) 940 g/mol
This aligns with known values for insulin, confirming that option 'A' is indeed correct.
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Community Answer
Insulin contains 3.4% sulphur. The minimum molecular mass of insulin i...
- Sulphur content = 3.4% = 3.4 g of sulphur per 100 g of insulin.
- Atomic mass of sulphur = 32 g/mol.
- To find the minimum molecular mass, assume the molecule contains at least one sulphur atom.
- If 1 sulphur atom (32 g) constitutes 3.4% of the molecular mass (M), then:
(32 / M) × 100 = 3.4
M = 32 × 100 / 3.4 ≈ 941.18 g/mol. - The closest option to 941.18 is 940.
Thus, the minimum molecular mass is A. 940.
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Insulin contains 3.4% sulphur. The minimum molecular mass of insulin isa)940b)560c)470d)350Correct answer is option 'A'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Insulin contains 3.4% sulphur. The minimum molecular mass of insulin isa)940b)560c)470d)350Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Insulin contains 3.4% sulphur. The minimum molecular mass of insulin isa)940b)560c)470d)350Correct answer is option 'A'. Can you explain this answer?.
Insulin contains 3.4% sulphur. The minimum molecular mass of insulin isa)940b)560c)470d)350Correct answer is option 'A'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Insulin contains 3.4% sulphur. The minimum molecular mass of insulin isa)940b)560c)470d)350Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Insulin contains 3.4% sulphur. The minimum molecular mass of insulin isa)940b)560c)470d)350Correct answer is option 'A'. Can you explain this answer?.
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