A-Level Biology for OCR A Study guides, Revision notes & Summaries

OCR A Level Biology: Cloning and Biotechnology Study Guide 2024. What are natural clones used for? - CORRECT ANSWER Horticulture Examples of natural plant clones - CORRECT ANSWER Bulbs, runners, rhizomes, stem tubers Other phrase for natural cloning - CORRECT ANSWER Vegetative propagation How bulbs do natural cloning - CORRECT ANSWER Leaf base swells with stored food, buds form internally, develop into new shoots and plants in the next season How runners do natural cloning - COR...

OCR A-level Biology Practicals Correctly Answered 2024. Practical 1 : Using a Light microscope to examine blood smears - CORRECT ANSWER Preparation: 1.) staining samples with methylene blue/ eosin - staining to add contrast so it is easier to identify different parts of te cell - for the electron microscope, the specimens are stained with lead 2.) mounting - dry mount: thinly sliced use tweezers to pick up your specimen and put it in the middle of a clean slide place a coverslip o...

OCR AS LEVEL BIOLOGY A H020/02: Depth in biology JUNE 2022 MARK SCHEME. OCR (Oxford Cambridge and RSA) is a leading UK awarding body, providing a wide range of qualifications to meet the needs of candidates of all ages and abilities. OCR qualifications include AS/A Levels, Diplomas, GCSEs, Cambridge Nationals, Cambridge Technicals, Functional Skills, Key Skills, Entry Level qualifications, NVQs and vocational qualifications in areas such as IT, business, languages, teaching/training, admini...

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 A Level Biology Cell Division Practice Questions 2024. What is a chromosome? - CORRECT ANSWER A strip of tightly coiled DNA How many pairs of chromosomes does a normal human have? - CORRECT ANSWER 23 What does a gene do? - CORRECT ANSWER Code for a characteristic For what 3 reasons does mitosis occur? - CORRECT ANSWER Growth, repair and asexual reproduction What occurs during the G1 phase of the cell cycle? - CORRECT ANSWER 1. Proteins are synthesised 2. ATP is produced 3....

OCR: OXFORD CAMBRIDGE: A LEVEL BIOLOGY A-2021: H420/02 BIOLOGICAL DIVERSITY ACTUAL QUESTION PAPER MERGED WITH MARK SCHEME SECTION A You should spend a maximum of 20 minutes on this section. Answer all the questions. 1 If a person is bitten by a venomous snake, the immediate treatment is normally to inject the person with the appropriate antibodies. This is an example of which type of immunity? A artificial active immunity B artificial passive immunity C natural active immu...

OCR AS LEVEL JUNE 2022 MARKSHEME BIOLOGY A PAPER 1 BREADTH IN BIOLOGY WITH VERIFIED SOLUTIONS GCE Biology A H020/01: Breadth in biology AS Level Mark Scheme for June 2022 Oxford Cambridge and RSA Examinations OCR (Oxford Cambridge and RSA) is a leading UK awarding body, providing a wide range of qualifications to meet the needs of candidates of all ages and abilities. OCR qualifications include AS/A Levels, Diplomas, GCSEs, Cambrid...

OCR AS LEVEL BIOLOGY A H020-02 Depth in biology JUNE 2022 MARK SCHEME 2024 LATEST UPDATE OCR (Oxford Cambridge and RSA) is a leading UK awarding body, providing a wide range of qualifications to meet the needs of candidates of all ages and abilities. OCR qualifications include AS/A Levels, Diplomas, GCSEs, Cambridge Nationals, Cambridge Technicals, Functional Skills, Key Skills, Entry Level qualifications, NVQs and vocational qualifications in areas such as IT, business, languages, teachin...