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Questions and Answers List

Question	Answer
JOINS TWO NUCLEOTIDES	PHOSPHODIESTER BONDS
Where precisely in the nucleic acid pentose sugar is the hydroxide group to be found, where the phosphodiester bond forms.	Carbon 3
The enzyme that catalyses the formation of a phosphodiester bond is...	Ligase
Two amino acids.	A Peptide Bond forms between
Water	What is removed in any condensation reaction?
The emulsion test is for which biological molecule?	Lipids
In the emulsion test, what is added first?	Ethanol
Which of the following tests for biological molecules, requires heat: Biuret Test, Emulsion test, Benedict's Test, Iodine test.	Benedict's Test
After it is indicated with Benedict's Test that any sugar present in a sample may be non-reducing, what procedure is necessary before repeating Benedict's test to confirm the definite presence of non-reducing sugar?	Boil with dilute hydrochloric acid, then neutralise with sodium hydrogen carbonate
The iodine solution will turn blue-black in the presence of starch. What colour would this test give if a negative result was indicated?	Yellow-orange