Smartzi ← All subjects

🧬

IGCSE Edexcel · Edexcel International

Biology (4BI1)

0 of 5 topics online · train each, then review the worked solutions.

Run the Biology (4BI1) diagnostic

Get your exam-readiness score + focus list.

Mock paper

Timed · graded 1–9

Revision plan

Weakest topics first

B1

unit

The nature & variety of living organisms

10 Qs

Characteristics of living organismsB1.15 Q

Variety of living organismsB1.25 Q

B2

unit

Structures & functions in living organisms

65 Qs

Levels of organisationB2.15 Q

Cell structuresB2.25 Q

Biological moleculesB2.35 Q

Movement of substancesB2.45 Q

Plant nutritionB2.55 Q

Human nutritionB2.65 Q

RespirationB2.75 Q

Gas exchange in plantsB2.85 Q

Gas exchange in humansB2.95 Q

Transport in plantsB2.105 Q

Transport in humansB2.115 Q

ExcretionB2.125 Q

Coordination and responseB2.135 Q

B3

unit

Reproduction & inheritance

20 Qs

Reproduction in plantsB3.15 Q

Reproduction in humansB3.25 Q

InheritanceB3.35 Q

Variation and natural selectionB3.45 Q

B4

unit

Ecology & the environment

20 Qs

The organism in the environmentB4.15 Q

Feeding relationshipsB4.25 Q

Cycles within natureB4.35 Q

Human influences on the environmentB4.45 Q

B5

unit

Use of biological resources

20 Qs

Food productionB5.15 Q

Selective breedingB5.25 Q

Genetic modificationB5.35 Q