| Date | May 2021 | Marks available | 1 | Reference code | 21M.1.SL.tz0.13 |
| Level | Standard Level | Paper | Paper 1 | Time zone | time zone 0 |
| Command term | Question number | 13 | Adapted from | N/A |
Question
What is the definition of cell respiration?
A. The controlled release of energy in the form of adenosine triphosphate (ATP) from organic compounds in cells
B. The controlled release of energy in the form of adenosine diphosphate (ADP) from organic compounds in cells
C. The controlled release of energy in the form of glycogen from organic compounds in cells
D. The controlled release of energy in the form of carbon dioxide from organic compounds in cells
Markscheme
A
Examiners report
Common higher level question. Mid-difficulty question, answer D was the main distractor.
