From what do ripe tomatoes and watermelons get their red colour?
Lycopene
Lycopene is a red carotenoid pigment present in ripe tomatoes, watermelons, pink guava and papaya.
As the fruit ripens, chlorophyll breaks down and lycopene accumulates, turning it red; lycopene is also a strong antioxidant.
Melanin is a skin pigment, bilirubin a bile pigment and chlorophyll the green pigment of plants.
Hence, Lycopene.
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III. Pasta
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pKa 2 = 9.06 (α - amino group)
pKa 3 = 10.54 (ε - amino group)
Which one of the following options represents the pl of lysine?
How many hydrogen bonds involving the backbone CO and NH can be observed in an α‐helix consisting of 15 amino acid residues?
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