Eduqas A Level Biology
Eduqas A Level Biology 1.1 Importance of ATP Exam Questions
Free Eduqas A Level Biology exam questions on 1.1 Importance of ATP, with mark schemes. Covers the structure and role of ATP, phosphorylation and chemiosmosis.
1.1 Importance of ATP exam questions
1 question pack of real past exam questions with its mark scheme. Answer every question without notes, then mark your answers line by line against the mark scheme.
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A Level Biology Flashcards
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About Eduqas A Level Biology 1.1 Importance of ATP
This topic explains why ATP is the energy currency of cells and how it is made by chemiosmosis.
What you need to know
- Structure Adenine, ribose and three phosphate groups.
- Role Hydrolysis of ATP to ADP and Pi releases energy in small, usable amounts.
- Phosphorylation Substrate-level, oxidative and photophosphorylation.
- Chemiosmosis Protons pumped across a membrane flow back through ATP synthase, producing ATP.
Common mistakes in 1.1 Importance of ATP
- Saying ATP stores large amounts of energy.
- Confusing ATP synthase with ATPase.
- Forgetting that chemiosmosis needs a proton gradient.
Try three 1.1 Importance of ATP exam-style questions
1. Explain why ATP is a suitable energy source for cells. (2 marks)
Show the mark scheme answer
It releases energy in small manageable amounts (1) in a single hydrolysis step (1).
2. Describe chemiosmosis. (3 marks)
Show the mark scheme answer
Electrons provide energy to pump protons across a membrane (1), creating a gradient (1); protons diffuse back through ATP synthase, producing ATP (1).
3. Name the enzyme that synthesises ATP. (1 mark)
Show the mark scheme answer
ATP synthase.
1.1 Importance of ATP FAQs
What does Importance of ATP cover?
ATP structure, its role, types of phosphorylation and chemiosmosis.
Where does chemiosmosis happen?
In mitochondria and chloroplasts.
Why not use glucose directly?
Glucose releases too much energy at once and needs many steps.
Revise this topic with flashcards: A Level Biology Flashcards, with mark scheme answers for Anki and Quizlet.
