Biology 9700/43 — May/June 2016
Cambridge A-Level · worked solutions for every part, with the mark scheme
Topics Inheritance · Energy and Respiration · Genetic Technology · Photosynthesis · Selection and Evolution · Classification, Biodiversity and Conservation · +2 more
ATP and NAD both play important roles in respiration. Both compounds are nucleotides.
Fig. 1.1 represents the molecular structures of ATP and NAD.
Using Fig. 1.1, compare the structures of ATP and NAD.
ATP provides an immediate energy source for metabolic processes such as anabolic reactions.
State two examples of anabolic reactions in a mammal that require ATP as an energy source.
1 _____
2 _____
Name the type of chemical reaction by which ATP is made during the Krebs cycle.
Outline the roles of NAD in the cytoplasm of a cell.
Carbohydrates and lipids are used as respiratory substrates.
Table 1.1 shows the energy values of carbohydrates and lipids.
Table 1.1
| respiratory substrate | energy value / |
|---|---|
| carbohydrate | 15.8 |
| lipid | 39.4 |
Explain why lipids have a higher energy value than carbohydrates.
The rest of this paper
9 more questions- Q2Photosynthesis13M
- Q3Genetic Technology10M
- Q4Selection and Evolution · Inheritance · Genetic Technology13M
- Q5Classification, Biodiversity and Conservation10M
- Q6Inheritance10M
- Q7Homeostasis11M
- Q8Control and Coordination8M
- Q9Energy and Respiration15M
- Q10Inheritance15M