Describe the Benedict's test for reducing sugars and how this can be modified to test for non-reducing sugars

Take 1-2cm3 of the sample in a test tubeAdd a few drops of Benedict's reagent to the test tube Heat the test tube in a water bath Leave for 5 minutes Observe the colour of the precipitate formed
no precipitate formed = negative for reducing sugarsprecipitate formed = positive for reducing sugars(green -> yellow -> orange -> brick red) increasing concentration of reducing sugars present
modify for non reducing sugarstake a new sample in a clean test tube add dilute HClwarm (at a lower temperature) in a water bath remove from the water bath and add NaHCO3add Benedict's solution repeat steps 3-5 with this sample





JP
Answered by Jennifer P. Biology tutor

8430 Views

See similar Biology A Level tutors

Related Biology A Level answers

All answers ▸

How can one remember the function and the anatomy of the cardiac valves?


Explain what the stages of protein folding are and how the protein is held in its 3D shape


People who have McArdie's disease produce less ATP than healthy people. As a result, they are not able to maintain strong muscle contraction during exercise. Use your knowledge of the sliding filament theory to suggest why (AQA BIOL5)


How does DNA replication occur?


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning