Biology

Pearson EdExcel · Code 4BI1

Topics ko order mein karo, har lesson ke baad recall test karo, phir past papers se exam-style questions practise karo.

1 Learn

Explanation parho aur Pakistan-relevant example dekho.

2 Recall

Key-point card se yaad karo, lesson dobara khole bagair.

3 Apply

Quiz attempt karo, mistakes note karo, weak concept par wapas jao.

Topic list

Cell Biology & Organisation

Cell structure, organelles, prokaryotes vs eukaryotes, cell division, and transport across membranes.

6 QReady 02

Nutrition & Digestion

Nutrients, balanced diet, the digestive system, enzymes, and absorption in the small intestine.

30 QReady 03

Respiration

Aerobic and anaerobic respiration, the role of ATP, and the effects of exercise.

5 QReady 04

Gas Exchange & Breathing

The human respiratory system, gas exchange in alveoli, and breathing mechanisms.

5 QReady 05

Blood & Circulation

The heart, blood vessels, blood components, and the double circulatory system.

5 QReady 06

Disease & Immunity

Pathogens, the immune system, vaccination, and non-specific defences.

5 QReady 07

Photosynthesis & Plants

Photosynthesis equation, limiting factors, leaf structure, and plant mineral nutrition.

5 QReady 08

Genetics & Heredity

DNA, genes, alleles, inheritance patterns, Punnett squares, and genetic disorders.

5 QReady 09

Evolution & Ecology

Natural selection, adaptation, food chains, ecosystems, and human impact on the environment.

5 QReady

How to turn Biology revision into marks

Biology answers need precise structure-function links, ordered processes, and evidence from diagrams or data. Long paragraphs do not earn marks unless each sentence explains the mechanism being tested.

Answer method

Name the structure, process, variable, or relationship before describing detail.
Put multi-stage processes in the correct order and state what moves, changes, or is produced.
Use values, trends, labels, and comparisons from the supplied figure instead of retelling the topic.
For evaluation, distinguish what the result supports from what the evidence cannot establish.

Common traps

Using near-synonyms where the biological term has a precise meaning.
Explaining purpose without the mechanism, or mechanism without linking back to function.
Ignoring units, controls, anomalies, sample size, or repeats in data and practical questions.
Writing every fact remembered instead of following the command word and mark allocation.

Practice rhythm

Draw and label one process or structure from memory, then compare it with the lesson.
Turn a key point into a because-therefore explanation and a data-based question.
Practise one calculation or graph task alongside one structured explanation.
Keep a vocabulary list of terms you used too broadly and rewrite the affected answer.

Official material and timed practice

These lessons support revision; confirm the current Pearson Edexcel specification and school exam-entry advice before planning your papers.

Official syllabus Official resources Past-paper desk