# O Level Biology (5090) tutoring online

> Our O Level Biology tutors teach the complete Cambridge 5090 syllabus, from cells and enzymes to inheritance, biotechnology and ecology, with regular past-paper practice and Paper 4 Alternative to Practical preparation. Classes are live online, 1:1 or in small groups, at times suited to students in Pakistan, the Gulf and the UK.

Source: https://www.gradeupinternational.com/o-level/biology
Last updated: 2026-10-01
Publisher: GradeUp International (https://www.gradeupinternational.com/)

Taught by: [Waseem Abbas](https://www.gradeupinternational.com/tutors/waseem-abbas), [Muhammad Usman](https://www.gradeupinternational.com/tutors/muhammad-usman), [Nimra Muqadas](https://www.gradeupinternational.com/tutors/nimra-muqadas).

O Level Biology is the natural starting point for students aiming at medicine, dentistry, nursing, pharmacy or the life sciences, and it pairs closely with Chemistry. The 5090 syllabus has nineteen topics, beginning with cells and classification and moving through nutrition, transport, gas exchange and respiration in plants and humans, to disease and immunity, coordination, reproduction, inheritance, biotechnology and ecology. The factual load is large, but understanding processes matters as much as memory.

The assessment follows the same pattern as the other O Level sciences. Paper 1 is a 1-hour multiple-choice paper of 40 questions worth 30%. Paper 2, the theory paper, lasts 1 hour 45 minutes and carries 80 marks and 50% of the grade. The remaining 20% is either Paper 3, a practical test, or Paper 4, the Alternative to Practical, which covers biological drawing, food tests, variables in investigations and interpreting data.

Students often lose marks through loose terminology, writing 'food' instead of 'glucose', or saying energy is 'made' rather than released. Genetic crosses, the structure and function of the kidney and the eye, and explaining osmosis precisely are other common problem areas. O Level Biology leads into A Level Biology, which expands cell biology, biochemistry, genetics and physiology considerably, so the precise language and data-handling habits formed now carry straight forward.

## How is O Level Biology examined?

### Cambridge O Level Biology (5090), Cambridge International Education

| Paper | Duration | Marks | Weighting |
| --- | --- | --- | --- |
| Paper 1: Multiple Choice | 1 hour | 40 | 30% |
| Paper 2: Theory | 1 hour 45 minutes | 80 | 50% |
| Paper 3: Practical Test | 1 hour 30 minutes | 40 | 20% |
| Paper 4: Alternative to Practical | 1 hour | 40 | 20% |

Syllabus for examination in 2026, 2027 and 2028. Grades A* to E. Examined in the June and November series.

Official syllabus: https://www.cambridgeinternational.org/programmes-and-qualifications/cambridge-o-level-biology-5090/

## What topics are in O Level Biology?

- Cells: Calculating magnification without converting units, and giving animal cells structures only plant cells have.
- Classification: Misusing dichotomous keys and writing binomial names in the wrong format.
- Movement into and out of cells: Describing osmosis without a partially permeable membrane or the direction of water movement.
- Biological molecules: Mixing up food tests and their positive results, such as forgetting that Benedict's test needs heating.
- Enzymes: Saying enzymes are 'killed' rather than denatured, and not linking active-site shape to specificity.
- Plant nutrition: Omitting light or chlorophyll from photosynthesis and misreading limiting-factor graphs.
- Transport in flowering plants: Confusing xylem and phloem, and explaining transpiration without evaporation from the leaf.
- Human nutrition: Mixing up digestive enzymes and where they act, and confusing digestion with absorption.
- Human gas exchange: Describing breathing with the wrong muscle actions or pressure changes.
- Respiration: Writing that respiration 'produces energy', and mixing up anaerobic products in muscle and in yeast.
- Transport in humans: Tracing blood through the heart in the wrong order and confusing arteries with veins.
- Disease and immunity: Confusing antibodies with antigens, and active with passive immunity.
- Excretion: Confusing excretion with egestion and mislabelling parts of the kidney.
- Coordination and control: Muddling the neurones of a reflex arc, and the pupil and lens changes in the eye.
- Coordination and response in plants: Explaining phototropism without describing how auxin is redistributed.
- Development of organisms and continuity of life: Mixing up flower structures in pollination and the hormones of the menstrual cycle.
- Inheritance: Genetic crosses without parental genotypes, gametes and a clear final ratio.
- Biotechnology and genetic modification: Vague, out-of-order steps when describing genetic modification.
- Relationships of organisms with one another and with the environment: Drawing food-chain arrows the wrong way and explaining pyramid shapes poorly.

## How do you get top marks?

- Use exact biological terms such as 'glucose', 'partially permeable membrane' and 'denatured'; everyday words rarely score.
- When describing a graph, quote values with units at key points and describe the trend before explaining it.
- Set out genetic crosses in full: parental phenotypes and genotypes, gametes, a Punnett square and the final ratio or probability.
- In Paper 4 drawings, use a sharp pencil, clean continuous lines, no shading and proportions that match the specimen.
- For investigation questions, name the independent, dependent and controlled variables and say how each control is kept constant.
- Use the mark allocation as a checklist: a 4-mark explanation needs four distinct, linked points.

## Fees

1:1: PKR 2,800 / AED 110 / GBP 22 per 60-minute class. Small group: PKR 9,500 per month. [All currencies](https://www.gradeupinternational.com/pricing).

## Frequently asked questions

### How many papers are there in O Level Biology 5090?

O Level Biology 5090 has three components: Paper 1 Multiple Choice (1 hour, 40 marks, 30%), Paper 2 Theory (1 hour 45 minutes, 80 marks, 50%) and a practical paper worth 20%. The practical is either Paper 3, a laboratory test, or Paper 4, the written Alternative to Practical. This applies to the syllabus for 2026, 2027 and 2028.

### Is O Level Biology hard?

O Level Biology is not mathematically demanding, but it has a large amount of content and requires precise scientific language. Most students find it manageable if they learn topic by topic and test themselves often. Common difficulties include genetics, transport and coordination systems, and data-response questions, so regular past-paper practice well before the exam is essential.

### How can I get an A* in O Level Biology?

Students aiming for an A* in O Level Biology need full syllabus coverage, exact terminology and confident data handling. Active recall, such as flashcards and self-testing, works better than rereading notes. Timed past papers, checked against mark schemes, show which wording earns credit. Our tutors build revision plans around weak topics, but we never promise a particular grade.

### What is the Alternative to Practical in O Level Biology?

The Alternative to Practical is Paper 4 of O Level Biology 5090, a 1-hour written paper worth 40 marks and 20% of the grade. It tests practical skills without a laboratory, including biological drawings, food tests, identifying variables, recording and processing data, and planning investigations. Students take it instead of the laboratory-based Paper 3.

### Is O Level Biology needed for medicine?

O Level Biology is the usual foundation for medicine, because medical schools commonly require Biology and Chemistry at A Level or FSc, and those courses build on O Level content. Students in Pakistan should also check IBCC equivalence and admissions-test requirements for their route. Skipping O Level Biology makes later Biology study possible but harder.

### What topics are in O Level Biology 5090?

O Level Biology 5090 has nineteen topics, including cells, classification, movement into and out of cells, biological molecules, enzymes, plant and human nutrition, transport, gas exchange, respiration, disease and immunity, excretion, coordination in animals and plants, reproduction and development, inheritance, biotechnology and ecology. Any topic can appear on any paper.