H022 - Study guides, Class notes & Summaries

OCR AS Level Biology A H020/01 Sample Question Paper 1 June 2022- Breadth in biology. Section A You should spend a maximum of 25 minutes on this section. Answer all the questions. 1 Young mammals receive antibodies in their mother’s milk. This is an example of which type of immunity? A artificial active immunity B artificial passive immunity C natural active immunity D natural passive immunity Your answer [1] 2 Which of the following descriptions is correct? A Vaccination gives lon...

OCR AS Level Biology A H020/01 Sample Question Paper 1 June 2022- Breadth in biology. Section A You should spend a maximum of 25 minutes on this section. Answer all the questions. 1 Young mammals receive antibodies in their mother’s milk. This is an example of which type of immunity? A artificial active immunity B artificial passive immunity C natural active immunity D natural passive immunity Your answer [1] 2 Which of the following descriptions is correct? A Vaccination gives lo...

OCR AS LEVEL BIOLOGY A H020/O1 JUNE 2022 ACTUAL MARK SCHEME - BREADTH IN BIOLOGY. H020/01 Mark Scheme June 2022 8 Downloaded by: NorthWest | Distribution of this document is illegal • the specification, especially the assessment objectives • the question paper • the mark scheme. You should ensure that you have copies of these materials. You should ensure also that you are familiar with the administrative procedures related to the marking process. ThInstructions for Examiners. I...

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 H020-02 Depth in biology JUNE 2022 MARK SCHEME.

OCR GCE AS LEVEL BIOLOGY A PAPER 2 H020/02 JUNE 2022 FINAL MARK SCHEME DEPTH IN BIOLOGY. S1 chromosomes consist of two (sister) chromatids S2 chromosomes / chromatids, condense S3 nuclear, envelope / membrane, breaks down S4 centrioles move to opposite, poles / ends of the cell S5 spindle (fibres) form(s) any three points unique to meiosis (differences): D6 meiosis has, prophase 1 and 2 / two prophases D7 homologous chromosomes pair / bivalents form / synapsis occurs, in prophase (...

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

OCR AS LEVEL BIOLOGY A H020/O1 JUNE 2022 ACTUAL MARK SCHEME - BREADTH IN BIOLOGY. H020/01 Mark Scheme June 2022 7 Downloaded by: NorthWest | Distribution of this document is illegal 12. Abbreviations, annotations and conventions used in the detailed Mark Scheme (to include abbreviati Annotation Meaning / alternative and acceptable answers for the same Separates marking points DO NOT ALLOW Answers which are not worthy of creIGNORE Statements which are irrelevant ALLOW Answers that can...