Events of fertilisation - Study guides, Class notes & Summaries

AQA A level Biology Revision Questions & ANSWERS LATEST EDITION 2023 GUARANTEED GRADE A+ Last document update:   ago

Describe how you would use a biochemical test to show that a solution contained a non-reducing sugar, such as sucrose. [3] ,first reducing sugars test; boil with dilute HCl acid then Neutralise with NaHCǑ, add benedict and heat to 95 degrees C brick red ppt forms if reducing sugar is present Describe a chemical test you could carry out to show that a piece of coconut contains lipids. [3] (Crush in) ethanol / alcohol; Add (to) water (Order of adding is critical for this point); Emulsion / whi...

BIOLOGY AS LEVEL7401 Last document update:   ago

AS BIOLOGY 7401/2 Paper 2 Mark scheme June 2021 Version: 1.0 Final *216A7401/2/MS* BIOLOGY AS LEVEL7401 MARK SCHEME – AS BIOLOGY – 7401/2 – JUNE 2021 2 Mark schemes are prepared by the Lead Assessment Writer and considered, together with the relevant questions, by a panel of subject teachers. This mark scheme includes any amendments made at the standardisation events which all associates participate in and is the scheme which was used by them in this examination. The standard...