A Level Biology - Energy

**This Powerpoint specifically uses the Cambridge AS Level Biology Syllabus and covers all criteria for – Unit Energy
**
Students will be able to -

1outline the need for energy in living organisms, as illustrated
by active transport, movement and anabolic reactions, such
as those occurring in DNA replication and protein synthesis

2 describe the features of ATP that make it suitable as the
universal energy currency

3 state that ATP is synthesised by:
• transfer of phosphate in substrate-linked reactions
• chemiosmosis in membranes of mitochondria and
chloroplasts

4 explain the relative energy values of carbohydrates, lipids and
proteins as respiratory substrates

5 state that the respiratory quotient (RQ) is the ratio of the
number of molecules of carbon dioxide produced to the
number of molecules of oxygen taken in, as a result of
respiration

6 calculate RQ values of different respiratory substrates from
equations for respiration

7 describe and carry out investigations, using simple
respirometers, to determine the RQ of germinating seeds or
small invertebrates (e.g. blowfly larvae)

**Every Powerpoint includes learning objectives, a starter and plenary, suitable activities and review questions with mark scheme. We also provide a FREE pdf version of the file so it can easily be printed for students as a handout or uploaded to the school VLE system
**
Bring your Cambridge AS Level Biology lessons to life with our expertly designed teaching resources. Each unit is tailored to the latest syllabus, offering ready-to-use lesson plans, engaging experiments, and visually clear notes that save hours of prep time. Whether you’re new to the course or refining your approach, The Science Shelf gives you everything you need to boost student understanding and exam success — all in one place.