Biology 9700/42 — May/June 2014
Cambridge A-Level · A Level Structured Questions · worked solutions for every part, with the mark scheme
Topics Inheritance · Selection and Evolution · Energy and Respiration · Genetic Technology · Control and Coordination · Homeostasis · +3 more
Fig. 1.1 is an electron micrograph of a chloroplast from a maize leaf cell.
Indicate below which of X, Y or Z contains:
transport proteins ______
pigments ______
A chloroplast also contains DNA.
Suggest the functions of DNA in this organelle.
Changes in the atmospheric carbon dioxide concentration, light intensity and temperature alter the rate of photosynthesis. These three factors directly affect different stages of photosynthesis.
Complete the table below using a tick (✓) if the factor directly affects the stage or a cross (✗) if it does not affect the stage.
| factor | stage | ✓ or ✗ |
|---|---|---|
| carbon dioxide concentration | Calvin cycle | |
| photolysis | ||
| light intensity | Calvin cycle | |
| photolysis | ||
| temperature | Calvin cycle | |
| photolysis |
The rest of this paper
9 more questions- Q2Inheritance · Selection and Evolution10M
- Q3Energy and Respiration · Inheritance · Genetic Technology14M
- Q4Genetic Technology · Selection and Evolution15M
- Q5Control and Coordination8M
- Q6Homeostasis11M
- Q7Inheritance · Selection and Evolution · Control and Coordination8M
- Q8Homeostasis · Energy and Respiration12M
- Q9Classification, Biodiversity and Conservation15M
- Q10(outdated) Biotechnology15M