Aqa a level bio - Study guides, Class notes & Summaries

AQA AS BIOLOGY 7401/1 Paper 1 / AQA A LEVEL BIO QUESTIONS Question Paper & Mark scheme Merged June 2023 VERIFIED Q1.(a) Describe how you would test a piece of food for the presence of lipid. ....................................................................................................................... . ....................................................................................................................... . .........................................................

AQA A LEVDefine diffusion. The net movement of molecules or ions from an area of higher concentration to an area of lower concentration until evenly distributed.Define osmosis.The movement of water from a region of higher water potential to a region of lower water potential across a partially permeable membrane. Define active transport. The movement of molecules from an area of lower concentration to an area of higher concentration using ATP and carrier proteins. State factors which ...

This is AQA A LEVEL BIOLOGY PAPER 2 JUNE 2023 QUESTION PAPER (7402/2) genuine for best scores

AQA AS BIOLOGY 7401/1 Paper 1 / AQA A LEVEL BIO QUESTIONS Question Paper & Mark scheme Merged June 2023 VERIFIED Q1.(a) Describe how you would test a piece of food for the presence of lipid. ....................................................................................................................... . ....................................................................................................................... . .................................................

QUESTIONS AND ANSWERS

AQA A Level Biology(AS LEVEL BIOLOGY PAPER 2)Test 2023 The structure and function of carbohydrates - CORRECT ANSWER-1) Monosaccharides: glucose, fructose, galactose 2) Disaccharides: condensation / hydrolysis / glycosidic bonds 3) Energy source (e.g. glucose, fructose, galactose released via respiration) 4) Respiration - use of carbs 5) Photosynthesis (formation of carbs/glucose) 6) Polysaccharides 7) Starch 8) Glycogen 9) Structural e.g. cellulose 10) Transport e.g. sucrose i...

A+ Graded Exam For Aqa A Level Biology Paper 2 2023 3.6.4 Homeostasis - CORRECT ANSWERWhat is negative feedback? - CORRECT ANSWER-A response that returns a change in levels, back to normal. What is positive feedback? - CORRECT ANSWER-A response that amplifies a change from the normal level. Which factors influence blood glucose concentration? - CORRECT ANSWER-Eating food containing carbohydrates, glucose absorbed from intestine to blood. Exercising, more glucose is used in respirat...

AQA A-Level Biology Questions with Answers | Graded A Glucose is absorbed from the lumen of the small intestine into epithelial cells. Explain how the transport of sodium ions is involved in the absorption of glucose by epithelial cells. (5 marks) [Unit 1, June 16] - Correct Answer ️️ -1. Na+ ions leave epithelial cell and enter blood; 2. (Transport out is by) active transport / pump / via carrier protein using ATP; 3. So, Na+ conc. in cell is lower than in lumen (of gut); 4. Sodium/N...

AQA A-Level Biology Questions with Answers | Graded A Glucose is absorbed from the lumen of the small intestine into epithelial cells. Explain how the transport of sodium ions is involved in the absorption of glucose by epithelial cells. (5 marks) [Unit 1, June 16] - Correct Answer ️️ -1. Na+ ions leave epithelial cell and enter blood; 2. (Transport out is by) active transport / pump / via carrier protein using ATP; 3. So, Na+ conc. in cell is lower than in lumen (of gut); 4. Sodium/N...

AQA A-Level Biology Questions with Answers | Graded A Glucose is absorbed from the lumen of the small intestine into epithelial cells. Explain how the transport of sodium ions is involved in the absorption of glucose by epithelial cells. (5 marks) [Unit 1, June 16] - Correct Answer ️️ -1. Na+ ions leave epithelial cell and enter blood; 2. (Transport out is by) active transport / pump / via carrier protein using ATP; 3. So, Na+ conc. in cell is lower than in lumen (of gut); 4. Sodium/N...