H422 - Study guides, Class notes & Summaries
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OCR 2023 Biology B H422/01: Fundamentals of biology A Level Question Paper & Mark Scheme (Merged)
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2 
OCR 2023 
Section A 
You should spend a maximum of 40 minutes on this section. 
Write your answer for each question in the box provided. 
1 The image shows an erythrocyte after being placed in a solution. 
Which option explains the appearance of the erythrocyte? 
A The solution was distilled water. 
B The water potential of the solution is equal to the water potential of the cytoplasm of the 
erythrocyte. 
C The water potential of the solution was less negative than the cytoplasm of the eryth...
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OCR 2023 Biology B H422/02: Scientific literacy in biology A Level Question Paper & Mark Scheme (Merged)
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1 This question is based on the Advance Notice Article ‘Development of therapeutic antibodies 
for the treatment of disease’. 
(a) (i) State what is meant by the term antigen. 
........................................................................................................................................... 
. ..................................................................................................................................[1] 
(ii) Scientists can combine antibody fra...
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OCR 2023 Biology B H422/03: Practical skills in biology A Level Question Paper & Mark Scheme (Merged)
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Apoptosis is the programmed cell death of damaged or unwanted cells. 
(a) Fig. 1.1 shows a transmission electron micrograph (TEM) of apoptosis of a leucocyte. 
Fig. 1.1 
A 
B 
C 
(i) Name the following structures and processes shown in Fig. 1.1: 
• the structure labelled A forming in the cell surface membrane 
• the process occurring to the organelle labelled B 
• the structure labelled C. 
Structure A ...........................................................................................
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Biology B H422/01: Fundamentals of biology A Level Question Paper & Mark Scheme (Merged)
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Biology B 
H422/01: Fundamentals of biology 
A Level 
Question Paper & Mark Scheme (Merged)
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ocr A Level Biology B (H422/01) QUESTION PAPER June2023.
- Exam (elaborations) • 43 pages • 2023
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ocr A Level Biology B H422-01 QUESTION PAPER June2023.
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ocr A Level Biology B (H422/01) MARK SCHEME June2023.
- Exam (elaborations) • 27 pages • 2023
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ocr A Level Biology B H422-01 MARK SCHEME June2023.
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Biology B H422/03: Practical skills in biology A Level Question Paper & Mark Scheme (Merged)
- Exam (elaborations) • 63 pages • 2024
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Biology B 
H422/03: Practical skills in biology 
A Level 
Question Paper & Mark Scheme (Merged)
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ocr A Level Biology B (Advancing Biology) (H422-03) June 2022 Question Paper
- Exam (elaborations) • 29 pages • 2023
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ocr A Level Biology B (Advancing Biology) (H422-03) June 2022 Question Paper
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ocr A Level Biology B H422/01 Question Paper June2023.
- Exam (elaborations) • 43 pages • 2023
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- $14.99
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ocr A Level Biology B H422-01 Question Paper June2023.
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ocr A Level Biology B H422/03 Question Paper June2023.
- Exam (elaborations) • 21 pages • 2023
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ocr A Level Biology B H422-03 Question Paper June2023.
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