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BIO NMDCAT Proteins
nmdcat.online June 29, 2026

Protein concentration is commonly estimated by measuring absorbance at

A. 260 nm
B. 280 nm
✓
C. 340 nm
D. 540 nm

📝 Explanation

Tryptophan and tyrosine absorb ultraviolet light strongly near 280 nm.

📖 Additional Information

  • 260 nm
  • 280 nm
  • 340 nm
  • 540 nm

Tryptophan and tyrosine absorb ultraviolet light strongly near 280 nm.

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