Biuret test for proteins
What Biuret test for proteins means in Biology A-Level, as defined for OCR.
Definition of Biuret test for proteins
Check what you remember
Read the wording for your board, then hide it and explain Biuret test for proteins in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
Add an equal volume of biuret solution to the sample; a purple colour indicates peptide bonds, so protein is present, while blue is negative.
Topics that use Biuret test for proteins
- Biological molecules (OCR A-Level)
Related terms
- amylose and amylopectin
- Benedict's test for reducing and non-reducing sugars
- Bonding and R-group interactions
- Carbon, hydrogen and oxygen
- Cellulose and microfibrils
- Cholesterol
- Cohesion and surface tension
- Collagen
Using Biuret test for proteins in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
Practise Biology questions
Create a free account to answer exam-style questions on this topic and get feedback on your answers.
A week of Premium from your first lesson · Then the free plan continues · No card, no charge