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BIO 121 LAB 1 ACTUAL PAPER 2026 QUESTIONS WITH SOLUTIONS GRADED A+

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BIO 121 LAB 1 ACTUAL PAPER 2026 QUESTIONS WITH SOLUTIONS GRADED A+

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BIO 121
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BIO 121

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BIO 121 LAB 1 ACTUAL PAPER 2026
QUESTIONS WITH SOLUTIONS GRADED A+


◉ What test identifies proteins?
Answer: Biuret test Positive result → purple


◉ What test identifies lipids?
Answer: Sudan IV Positive result → red oil layer


◉ What test identifies nucleic acids?
Answer: Diphenylamine test Positive result → blue


◉ Monomer of carbohydrates?
Answer: Monosaccharide (glucose)


◉ Polymer of carbohydrates?
Answer: Polysaccharide (starch)


◉ Monomer of proteins?
Answer: Amino acid

, ◉ Polymer of proteins?
Answer: Polypeptide / protein


◉ Monomer of nucleic acids?
Answer: Nucleotide


◉ Polymer of nucleic acids?
Answer: DNA or RNA


◉ Positive control?
Answer: Sample known to give a positive result


◉ Negative control?
Answer: Sample known to give no reaction


◉ Solute?
Answer: Substance being dissolved


◉ Solvent?
Answer: Liquid doing the dissolving
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