Specification J247. Explore a topic, practise the skill, and see where to focus next.
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OCR · Biology A (Gateway Science) · J247LearningP is independent of OCR · Biology A (Gateway Science). Use the current official documents for assessment requirements.
Try three different Biology skills from this OCR · Biology A (Gateway Science) route. See what went right, understand a mistake, and find a useful next step.
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A bacterial cell is prokaryotic, so its main circular DNA loop lies free in the cytoplasm rather than inside a nucleus. Bacteria still have a cell membrane and ribosomes.
A pH far from the optimum can disrupt bonds that maintain the enzyme's specific shape. The active site then becomes less complementary to the substrate, so fewer enzyme-substrate complexes form.
Photosynthetic rate is controlled by the factor in shortest supply. If enzyme-controlled reactions are limited by low temperature, extra carbon dioxide will have little effect.
These tiles show your answers to three questions. They are a starting point, not a mastery score or grade prediction.
Correct answer: Its genetic material is not enclosed in a nucleus
A bacterial cell is prokaryotic, so its main circular DNA loop lies free in the cytoplasm rather than inside a nucleus. Bacteria still have a cell membrane and ribosomes.
Correct answer: Changing pH alters bonds and the shape of its active site
A pH far from the optimum can disrupt bonds that maintain the enzyme's specific shape. The active site then becomes less complementary to the substrate, so fewer enzyme-substrate complexes form.
Correct answer: Temperature may be the limiting factor
Photosynthetic rate is controlled by the factor in shortest supply. If enzyme-controlled reactions are limited by low temperature, extra carbon dioxide will have little effect.
For parents: look at the explanation together. A correct answer is encouraging; a missed answer gives you something specific to work on. Broader practice over time is needed to understand progress.
A scientific biological drawing uses clear, unbroken lines, no artistic shading and ruled label lines. It should represent the observed specimen and include scale or magnification where appropriate.
Watch for: Do not name a biological process without explaining the mechanism. For Cell structures, link the relevant structure or condition to the resulting effect.
The spread suggests either natural variation or an anomalous result. Repeats under identical controlled conditions allow the anomaly to be investigated and a mean of concordant measurements to provide more reliable evidence.
Watch for: Do not name a biological process without explaining the mechanism. For What happens in cells (and what do cells need)?, link the relevant structure or condition to the resulting effect.
Cells continuously require ATP for processes including active transport, synthesis and movement. Respiration transfers energy from substrates into ATP that can supply these processes.
Watch for: Do not name a biological process without explaining the mechanism. For Respiration, link the relevant structure or condition to the resulting effect.
Plants convert glucose into cellulose for cell walls and also use it in respiration, store it as starch, make amino acids with nitrate ions, and make lipids. These uses support growth and metabolism.
Watch for: Do not name a biological process without explaining the mechanism. For Photosynthesis, link the relevant structure or condition to the resulting effect.
Plant meristems retain cells that divide and differentiate throughout growth. Embryonic animal stem cells can form many cell types, whereas adult stem cells such as bone-marrow cells usually have a more limited range.
Watch for: Do not name a biological process without explaining the mechanism. For Supplying the cell, link the relevant structure or condition to the resulting effect.
A potometer records water uptake by a shoot. Most replaces water lost through transpiration, but a small amount is used in photosynthesis, growth or maintaining cells, so uptake is only an estimate of transpiration.
Watch for: Do not name a biological process without explaining the mechanism. For The challenges of size, link the relevant structure or condition to the resulting effect.
Brain injuries often differ in position and extent, may damage interconnected regions and are rare, so one case study is difficult to generalise. Researchers must also balance useful evidence against consent and welfare concerns.
Watch for: Do not name a biological process without explaining the mechanism. For Coordination and control - the nervous system, link the relevant structure or condition to the resulting effect.
Oestrogen and progesterone in the pill maintain hormonal feedback that inhibits FSH and LH, preventing normal follicle maturation and ovulation. IVF instead uses fertility hormones to stimulate egg maturation and release.
Watch for: Do not name a biological process without explaining the mechanism. For Coordination and control - the endocrine system, link the relevant structure or condition to the resulting effect.
ADH makes collecting ducts more permeable to water, so more water returns to the blood and a smaller volume of concentrated urine forms. Kidney failure may require dialysis or transplant; urea is made in the liver from excess amino acids.
Watch for: Do not name a biological process without explaining the mechanism. For Maintaining internal environments, link the relevant structure or condition to the resulting effect.
Transpiration releases water vapour from leaves. Water cycles through evaporation, transpiration, condensation, precipitation and flows, while decomposers and microorganisms also drive carbon and nitrogen cycling.
Watch for: Do not name a biological process without explaining the mechanism. For Ecosystems, link the relevant structure or condition to the resulting effect.
Height is polygenic, so alleles at many genes contribute, and environmental factors such as nutrition also affect growth. This produces a continuous range rather than a few discrete categories.
Watch for: Do not name a biological process without explaining the mechanism. For Inheritance, link the relevant structure or condition to the resulting effect.
If populations are isolated, different selection pressures and mutations can change their allele frequencies. Over many generations the differences may become large enough to prevent successful interbreeding, producing separate species.
Watch for: Do not name a biological process without explaining the mechanism. For Natural selection and evolution, link the relevant structure or condition to the resulting effect.
Replicated abundance data paired with pollution measurements can test the proposed association. Recording plausible confounders such as substrate, light and moisture helps assess whether distance from traffic rather than another factor explains the pattern.
Watch for: Do not name a biological process without explaining the mechanism. For Monitoring and maintaining the environment, link the relevant structure or condition to the resulting effect.
Benefits may include higher yield and reduced insecticide use. Risks to investigate include effects on non-target organisms and transfer of the inserted allele to wild relatives. Evaluation must weigh evidence for both sides.
Watch for: Do not name a biological process without explaining the mechanism. For Feeding the human race, link the relevant structure or condition to the resulting effect.
The survey supports an association, not a single causal explanation. Confounding lifestyle and demographic factors, measurement quality and the possibility that illness reduces exercise must be evaluated using stronger study designs.
Watch for: Do not name a biological process without explaining the mechanism. For Monitoring and maintaining health, link the relevant structure or condition to the resulting effect.
Surface liquid is not part of the potato tissue and would falsely increase the measured mass. Blotting consistently removes this source of measurement error without extracting water from the cells.
Watch for: Do not name a biological process without explaining the mechanism. For Practical skills, link the relevant structure or condition to the resulting effect.
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OCR · Biology A (Gateway Science) · GCSE · Biology · J247
Version 4.0, August 2026; current checked 28 August 2026
Source checked: 2026-08-28. The current official specification controls assessment requirements and option choices.
Yes. This page offers three original questions from three different skills on this exact course. Each answer has an explanation, followed by a sample heatmap showing what was correct and what to revisit. No account is needed, and taster answers are not saved.
It shows the outcome of these three answers and gives a specific skill to discuss or practise next. It is not a full assessment, a mastery score or a grade prediction. Broader practice over time is needed to understand progress.
LearningP currently maps 16 assessed areas for specification J247. The visible topic map below is derived from the verified route; the current official specification remains controlling.
The verified source bank contains 293 original LearningP question records for this route. Every mapped area meets the current publication minimum and passed the latest blocker and review audit.
No. LearningP uses official specifications and assessment materials to map content and demand, while its practice questions and explanations are independently authored.
No. LearningP reports practice evidence, coverage, strengths and gaps. It does not guarantee or automatically predict examination outcomes.
Use the official OCR · Biology A (Gateway Science) specification and assessment-resource pages linked on this page, together with information supplied by the learner’s school.