AQA A Level Biology (Year 1 and Year 2) notes

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 coconut contains lipids. [3] - correct answer. (Crush in) ethanol / alcohol; Add (to) water (Order of adding i...

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 coconut contains lipids. [3] - correct answer. (Crush in) ethanol / alcohol; Add (to) water (Order of adding i...

How do biological molecules provide evidence for evolution? - correct answer. They all have similar molecules and use the same amino acids and DNA. What are monomers of carbohydrates called? - correct answer. Monosaccharides. Beta Glucose - correct answer. Alpha glucose - correct answer. Glucose formula - correct answer. C₆H₁₂O₆ Name of the bond between monosaccharides? - correct answer. Glycosidic bond. What is sucrose made from? - correct answer. Glucose and fructose. What i...

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 coconut contains lipids. [3] - correct answer. (Crush in) ethanol / alcohol; Add (to) water (Order of adding i...

How do biological molecules provide evidence for evolution? - correct answer. They all have similar molecules and use the same amino acids and DNA. What are monomers of carbohydrates called? - correct answer. Monosaccharides. Beta Glucose - correct answer. Alpha glucose - correct answer. Glucose formula - correct answer. C₆H₁₂O₆ Name of the bond between monosaccharides? - correct answer. Glycosidic bond. What is sucrose made from? - correct answer. Glucose and fructose. What i...

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 coconut contains lipids. [3] - correct answer. (Crush in) ethanol / alcohol; Add (to) water (Order of adding i...