Breadth in biology Study guides, Revision notes & Summaries

This is the official question paper

This is the final mark scheme

Section A You should spend a maximum of 25 minutes on this section. Write your answer for each question in the box provided. 1 Which statement describes a problem that has resulted from the increased use of antibiotics? A Penicillin can no longer be used to treat infections. B Rates of MRSA infection have increased. C Some bacteria and fungi have evolved resistance to antibiotics. D Viral infections can no longer be treated with antibiotics. Your answer [1] 2 The diagram shows a compute...

This is the official question paper

OCR AS LEVEL BIOLOGY A PAPER 1 H020/01 JUNE 2022 MARK SCHEME BREADTH IN BIOLOGY. change in primary structure changes, tertiary structure / 3D shape  (tertiary structure / 3D shape) no longer complementary (to shape of enzyme)  less likely to be broken down by enzymes / enzymesubstrate complexes less likely to form  change in solubility  Max 1 ALLOW change in complementary shape IGNORE takes longer to be broken ALLOW can’t be broken down easily / harder to break down DO...

OCR AS Level Biology A H020/01 Sample Question Paper 1 June 2022- Breadth in biology. • Use black ink. You may use an HB pencil for graphs and diagrams. • Complete the boxes above with your name, centre number and candidate number. • Answer all the questions. • Where appropriate, your answers should be supported with working. Marks may be given for a correct method even if the answer is incorrect. 2 Section A You should spend a maximum of 25 minutes on this section. Answer all t...

OCR AS LEVEL BIOLOGY A H020/01 JUNE 2022 ACTUAL QUESTION PAPER - Breadth in Biology. SECTION A You should spend a maximum of 25 minutes on this section. Write your answer for each question in the box provided. Answer all the questions. 1 The graph below shows the results of an osmosis experiment investigating the effect of changing the concentration of sodium chloride (NaCl) on mass of potatoes. 10 5 Percentage change in 0 mass –5 –10 Which concentration of NaCl causes equal mo...

OCR AS LEVEL BIOLOGY A H020/01 JUNE 2022 ACTUAL QUESTION PAPER - Breadth in Biology. INSTRUCTIONS • Use black ink. You can use an HB pencil, but only for graphs and diagrams. • Write your answer to each question in the space provided. If you need extra space use the lined pages at the end of this booklet. The question numbers must be clearly shown. • Answer all the questions. • Where appropriate, your answer should be supported with working. Marks might be given for using a correc...