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- Study guides, Class notes & Summaries
Looking for the best study guides, study notes and summaries about ? On this page you'll find 25 study documents about .
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Exam (elaborations)
Question Paper and Marking Scheme Summary 2025
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57
October 2025
2025/2026
A
This document combines the June 2025 question paper with a detailed marking scheme summary. Each question is paired with clear, paraphrased answers for accurate revision and exam preparation. Ideal for students and teachers seeking a complete, copyright-safe study resource for understanding exam structure and marking criteria.
rooney1
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Exam (elaborations)
Question Paper and Marking Scheme Summary 2025
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56
October 2025
2025/2026
A
This document combines the may and June 2025 question paper with a detailed marking scheme summary. Each question is paired with clear, paraphrased answers for accurate revision and exam preparation. Ideal for students and teachers seeking a complete, copyright-safe study resource for understanding exam structure and marking criteria.
OCR Biology Exam Practice Questions & Answers
1ai) Drawing fig 1.2 - teacher sees two of labels are incorrect and that the biological drawing was poor quality
identify 1 incorrect label and explain your answer - ANSWERSribosome, you cant see this with a light microscope
1aii) state 3 changes other than labels that student should make to improve biological drawing - ANSWERS- no arrowheads
- no shading
- give a title
1b) both a TEM and SEM can be used to view same cell BUT images for...
Bensuda
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Exam (elaborations)
OCR Biology UPDATED Exam Questions and CORRECT Answers
OCR Biology UPDATED Exam Questions
and CORRECT Answers
Define magnification - Ans How much larger a displayed image is compared with the original
object
Define resolution - Ans The ability to distinguish between two points
Why is staining used? - Ans - Some specimens are colourless
- It is useful to highlight different structures
- It increases contras
MGRADES
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Exam (elaborations)
OCR Biology PASSED Exam Questions and CORRECT Answers
OCR Biology PASSED Exam Questions and
CORRECT Answers
Allele - Ans Different forms of a gene
Loci - Ans Location of a gene on a chromosome
log phase - Ans The period of exponential growth of bacterial population.
lag phase - Ans "flat" period of adjustment, enlargement; little growth
interspecific competition - Ans competition between members of different species
What molecules travel by diffusion - Ans Small non-polar molecules
MGRADES
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Exam (elaborations)
OCR Biology Exam Guide Questions and CORRECT Answers
OCR Biology Exam Guide Questions and
CORRECT Answers
Cofactors - Ans A substance that has to be present to ensure that an enzyme catalysed reaction
takes place at the appropriate rate.
Cofactor - Ans Zinc being permanently bound to carbonic anahydrase is an example of what?
A co-factor that together with a substrate forms then right shape to bind to the active site. - Ans
What is a co-substrate?
MGRADES
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Exam (elaborations)
OCR Biology Biodiversity UPDATED Exam Questions and CORRECT Answers
OCR Biology Biodiversity UPDATED Exam
Questions and CORRECT Answers
What is biodiversity? - Ans The variety of living organisms in an area.
Why is biodiversity important? - Ans Biodiversity allows a balanced ecosystem. Many
organisms rely on one another, they are interconnected.
MGRADES
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Exam (elaborations)
OCR Biology A Paper 3
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57
April 2024
2023/2024
A+
OCR Biology A Paper 3
lizunitedstates
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