H420 2 Guides d'étude, Notes de cours & Résumés
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OCR GCE A LEVEL BIOLOGY A -MARK SCHEME JUNE 2003 (H420-2)Biological diversity
- Examen • 24 pages • 2023
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OCR GCE A LEVEL BIOLOGY A -MARK SCHEME JUNE 2003 (H420-2)Biological diversity
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A Level Biology A H420/02 Biological diversity
- Examen • 36 pages • 2024
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A Level Biology A 
H420/02 Biological diversitySECTION A 
You should spend a maximum of 20 minutes on this section. 
Write your answer for each question in the box provided. 
Answer all the questions. 
1 Which of the following best describes a microscope with high resolution? 
A The microscope can distinguish structures that are very close together. 
B The microscope can view structures that are very small. 
C The microscope is capable of high magnification. 
D The microscope has an in-built eye...
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OCR: OXFORD CAMBRIDGE: A LEVEL BIOLOGY A-2021: H420/02 BIOLOGICAL DIVERSITY ACTUAL QUESTION PAPER MERGED WITH MARK SCHEME
- Examen • 51 pages • 2023
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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...
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OCR A_Level Biology Paper 1 Marking Scheme.
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OCR A_Level Biology Paper 1 Marking Scheme. 
Question Answer Marks AO 
element 
1 D 1 1.2 
2 B 1 1.1 
3 A 1 1.1 
4 A 1 1.1 
5 B 1 1.1 
6 B 1 1.1 
7 B 1 1.1 
8 B 1 1.1 
9 A 1 2.6 
10 A 1 2.6 
11 C 1 2.3 
12 C 1 2.4 
13 B 1 1.1 
14 C 1 1.2 
15 B 1 2.5 
Total 15 
H420/01 Mark Scheme 
Question Answer Marks AO 
element 
16 (a) (i) adenine 1 2.1 DO NOT ALLOW adenosine 
IGNORE nitrogenous base / purine 
(a) (ii) hydrolysis 1 2.1 IGNORE dephosphorylation 
(a) (ii...
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OCR A LEVEL BIOLOGY JUNE 2022 BIOLOGY A H420 PAPER 2 ACTUAL QUESTION PAPER
- Examen • 33 pages • 2023
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OCR A LEVEL BIOLOGY JUNE 2022 BIOLOGY A H420 PAPER 2 ACTUAL QUESTION PAPER
Pendant que vous lisez ceci, un camarade de classe a gagné 4,35 € supplémentaires
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A Level Biology A
- Examen • 90 pages • 2024
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Contents 
Introducing…A Level Biology A ii 
Teaching and learning resources iii 
Professional development iv 
1 Why choose an OCR A Level in Biology A? 1 
1a. Why choose an OCR qualification? 1 
1b. Why choose an OCR A Level in Biology A? 2 
1c. What are the key features of this specification? 3 
1d. How do I find out more information? 4 
2 The specification overview 5 
2a. Overview of A Level in Biology A (H420) 5 
2b. Content of A Level in Biology A (H420) 6 
2c. Content of modules 1 to 6 8 ...
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A Level Biology A H420/02 Biological diversity Sample Question Paper
- Examen • 50 pages • 2022
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A Level Biology A 
H420/02 Biological diversity 
Sample Question Paper 
Date – Morning/Afternoon Version 2.2 
Time allowed: 2 hours 15 minutes 
You may use: 
• a scientific or graphical calculator 
* 0 0 0 0 0 0 * 
First name 
Last name 
Centre 
number 
Candidate 
number 
INSTRUCTIONS 
• 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, you...
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OCR GCE A LEVEL BIOLOGY A MARK SCHEME (H420-2)Biological diversity
- Examen • 24 pages • 2024
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- $17.99
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OCR GCE A LEVEL BIOLOGY A MARK SCHEME (H420-2)Biological diversity
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OCR A-Level Biology - Cell Division and Organisation
- Resume • 13 pages • 2023
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Hand-written summary notes using Seneca on the whole of Cell Division and Organisation in Module 2 - Foundations in biology, OCR A-Level Biology (H420). This includes an overview on the cell cycle; mitosis; meiosis; cell specialisation; levels of organisation; stem cells. 
Happy revising! :)
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