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Particular biological molecules react with chemicals called reagents to give distinct colour changes - VCE - SSCE Biology - Question 22 - 2010 - Paper 1
Question 22
Particular biological molecules react with chemicals called reagents to give distinct colour changes. The colour depends on the kind of biological molecule and the t... show full transcript
Worked Solution & Example Answer:Particular biological molecules react with chemicals called reagents to give distinct colour changes - VCE - SSCE Biology - Question 22 - 2010 - Paper 1
Step 1
The colours she would observe are
Answer
To determine the colours that would be observed when different reagents are added to isolated ribosomes, we need to analyze the biological molecules they contain and the reagents used.
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Identifying Biological Molecules: Since ribosomes mainly consist of proteins, we can infer that when reagent L (which reacts with proteins to give a violet color) is used, a violet color will be observed.
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Examining Other Potential Reagents: If we assume other reagents or mixtures are present, we refer back to the table:
- K (starch) would yield dark blue.
- M (lipid) would yield red.
- N (nucleic acid) would yield green.
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Combining Observations: Adding reagent L (violet) and possibly other reagents could lead to observing combinations of these colors. However, based on the options given, the best fitting combination that could be observed from the options would be:
- B. green and violet, as reacting with nucleic acids (green) and proteins (violet) would yield these colors.