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AQA GCSE Biology flashcards: Topic 4 Bioenergetics

Every mark-scheme key word, marking point and examiner trap for Topic 4 Bioenergetics, written by an AQA Biology specialist. The bold words are the exact words that earn the marks.

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4.1.1 Photosynthetic reactionMarking points
Question
Describe what happens in photosynthesis.
Answer
  • Chlorophyll, a green pigment held inside the chloroplasts of plants and algae, absorbs light energy
  • That energy then drives the conversion of carbon dioxide and water into glucose, with oxygen given off as a by-product
4.1.1 Photosynthetic reactionDefinition
Question
What type of reaction is photosynthesis, and why?
Answer
Photosynthesis is an endothermic reaction.
This is because light energy is taken in from the environment and passed into the chloroplast, ending up stored in the chemical bonds of the glucose molecule.
4.1.1 Photosynthetic reactionDefinition
Question
State the word equation for photosynthesis.
Answer
Carbon dioxide + water → glucose + oxygen
The reaction requires light.

What is inside

35 cards covering 6 topics, each written to the AQA mark scheme. Cards are tagged as definitions, marking points, applications or examiner traps, and the bold words are the exact key words that earn the marks.

  • 4.1.1 Photosynthetic reaction
  • 4.1.2 Rate of photosynthesis
  • 4.1.3 Uses of glucose from photosynthesis
  • 4.2.1 Aerobic and anaerobic respiration
  • 4.2.2 Response to exercise
  • 4.2.3 Metabolism

Who it is for

These flashcards are for AQA GCSE Biology students who want the exact mark-scheme wording for Topic 4, rather than vague definitions that drop marks. They suit both Combined Science (Trilogy) and separate Biology students, and both Foundation and Higher tiers, with the Higher-tier cards clearly flagged.

How access works

The first three cards are free to read on this page. To unlock the full deck, buy it once for £3.99. This is a one-time payment, not a subscription.

Access is then permanent and works on any device you sign in on, using the same account as Phlo AI. Payment is handled securely by Stripe.

Frequently asked questions

Is this deck for the AQA specification?

Yes. It is written specifically for AQA GCSE Biology (8461) and the Biology content of Combined Science: Trilogy (8464), Topic 4 Bioenergetics, with every card matched to the mark scheme. It is not affiliated with AQA.

What does it cover?

All of Topic 4: photosynthesis and its reaction, the rate of photosynthesis and limiting factors, the uses of glucose, aerobic and anaerobic respiration, the response to exercise, and metabolism. There are 35 cards, with the Higher-tier cards (the inverse square law, using limiting factors, oxygen debt and the liver) clearly flagged.

Do I get lifetime access?

Yes. It is a one-time payment, not a subscription. Once you buy the deck you keep access permanently on any device you sign in on.

Can I use it on my phone?

Yes. The viewer is built mobile-first, so you can flip, shuffle and filter cards on your phone, which is how most students revise.

Can I try it before I buy?

Yes. The first three cards are free to read on this page. Buy once to unlock all 35.

How is this different from a textbook?

Every bold word is an exact mark-scheme key word that earns a mark, and the examiner traps flag the mistakes that lose them. It is written to be revised, not read.

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