Biology revision Study guides, Revision notes & Summaries

AQA A level Biology Revision All Answers Correct 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 ...

AQA A LEVEL BIOLOGY REVISION EXAM | QUESTIONS & 100% CORRECT ANSWERS (VERIFIED) | LATEST UPDATE | GRADEA+ Describe how you would use a biochemical test to show that a solution contained a nonreducing sugar, such as sucrose. [3] Correct Answer: ,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 coc...

AQA A level Biology Revision Questions 2023

VCE BIOLOGY REVISION STUDY GUIDE EXAM SOLUTION LATEST 2023 DEFINITION OF KEY TERMS

Describe how you would use a biochemical test to show that a solution contained a non-reducing sugar, such as sucrose. [3] - Answer ,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] - Answer (Crush in) ethanol / alcohol; Add (to) water (Order of adding is critical for...

A red blood cell made up of 15% potassium has a sodium potassium channel that moves the potassium ions across the cell membrane. If the surrounding plasma which contains 35% potassium, which way will the solute move?A red blood cell made up of 15% potassium has a sodium potassium channel that moves the potassium ions across the cell membrane. If the surrounding plasma which contains 35% potassium, then the plasma is ______________ to the cell.A red blood cell made up of 15% potassium has a sodiu...

What are carbohydrates made out of? - Answer carbon, hydrogen and oxygen What is a monosaccharide (with examples of 3)? - Answer Carbohydrates with a single sugar unit, such a glucose, fructose and ribose What is a disaccharide (with 3 examples)? - Answer A carbohydrate with two sugar units, including maltose, sucrose or lactose. What is a true polysaccharide (with three examples)? - Answer A long chain of sugars that has been made through condensation polymerisation, these ...

CCEA A2.2 Biology Revision Questions With 100% Correct Answers

Marine Biology Revision Questions with Certified Solutions Aquatic Ecosystems An ecosystem that is associated with water Euphotic The surface level of the ocean Disphotic a zone of the ocean where light penetration is too low for photosynthesis, but vision is still possible for some species Aphotic The ocean level where light cannot be reached Nekton Aquatic animals that are able to swim freely Benthos The sea bed Water Cycle The continuous movement of water between Earth's surface and th...