Many students already have 0610 Biology notes (ZNotes, school booklets, Tutor packs). If you sit Combined Science, you must trim them to your 0653/0654 syllabus — not relearn everything at triple depth.

Hub: Combined Science biology · Triple vs combined.

Four-step trim method

Step	Action
1	Open official combined syllabus biology list
2	Highlight only matching topics in 0610 notes
3	Delete or strike through non-exam topics
4	Add one diagram per retained topic

Usually keep (if on your syllabus)

• Cell structure, osmosis, enzymes (basics)
• Photosynthesis & respiration equations
• Heart, lungs, digestion (overview)
• Inheritance keywords, simple crosses
• Food webs, carbon cycle bullets

Often cut from 0610 packs

• Extra genetics depth not listed
• Long biotechnology sections
• A Level-style extended essays

Confirm with your syllabus — lists vary by code.

Faster alternative

Start from free combined science notes and add detail only where teachers mark mocks weak.

Frequently asked questions

Highlight whole 0610 PDF?

No — active trim saves time vs passive highlighting.

Topic guides still OK?

Use cell etc. — stop at combined syllabus end.

Extended 0610 on combined paper?

Risky — Core vs Extended for tier.

Codes 0653 vs 0654?

0653 vs 0654 guide.

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