Energy flow
19.1What the syllabus asks of you
- State that the Sun is the principal source of energy input to biological systems
- Describe the flow of energy through living organisms, including light energy from the Sun and chemical energy in organisms, and its eventual transfer to the environment
Read the notes first
Chapter 19: Energy flow
Drill this topic
Every question on Energy flow, untimed, marked as you go.
Make a worksheet
Choose the years and how many questions, then print it with the answers on separate pages.
13 questions
1May / June 2025 · Paper 22 · Q35Show mark scheme →
A
B
C
D
Mark scheme
2May / June 2025 · Paper 22 · Q36Show mark scheme →
A
B
C
D
Mark scheme
3Oct / Nov 2024 · Paper 21 · Q34Show mark scheme →
A
B
C
D
Mark scheme
4Oct / Nov 2024 · Paper 21 · Q35Show mark scheme →
A
B
C
D
Mark scheme
5May / June 2024 · Paper 21 · Q37Show mark scheme →
A
B
C
D
Mark scheme
6Oct / Nov 2023 · Paper 22 · Q36Show mark scheme →
A
B
C
D
Mark scheme
7May / June 2023 · Paper 21 · Q35Show mark scheme →
A
B
C
D
Mark scheme
8Oct / Nov 2022 · Paper 22 · Q35Show mark scheme →
A
B
C
D
Mark scheme
9May / June 2021 · Paper 21 · Q37Show mark scheme →
A
B
C
D
Mark scheme
10May / June 2021 · Paper 21 · Q38Show mark scheme →
A
B
C
D
Mark scheme
11May / June 2021 · Paper 22 · Q37Show mark scheme →
A
B
C
D
Mark scheme
12May / June 2020 · Paper 21 · Q35Show mark scheme →
A
B
C
D
Mark scheme
13May / June 2020 · Paper 22 · Q35Show mark scheme →
A
B
C
D
Mark scheme