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An oligomeric protein has a molecular weight of 367000. A 460 mg sample was treated with an excess of 1-fluoro-2,4-dinitrobenzene (Sanger’s reagent) until the reaction was complete. Next the peptide bonds were hydrolyzed by heating with concentrated HCl. The product of the complete hydrolysis contained 2.2 mg of the compound […]

Martha brings her 11-year old grandson, James, to your clinic to have his right ear checked. He has complained to her about a mild earache for the past two days. His grandmother believes that he feels warm but did not verify this with a thermometer. James states that the pain […]

Q1. In recent year’s phytoplankton have been investigated as a potential source of energy for humans. Researchers have therefore been interested in whether this organism can be ‘farmed’ to provide food or fuel. In terms of biomass, Gross Primary production (GPP) in phytoplankton living in the layer just below the […]

Q1. In Drosophila, vestigial (partial formed) wings (vg) are recessive to normal long wings (vg+), and the gene for this trait is autosomal. The gene for the white eye trait is on the X chromosome. Suppose a homozygous white-eyed, long-winged female fly is crossed with a homozygous red-eyed, vestigial-winged male. […]