Biology 9700/42 — May/June 2017
Cambridge A-Level · A Level Structured Questions · worked solutions for every part, with the mark scheme
Topics Homeostasis · Inheritance · Control and Coordination · Energy and Respiration · Photosynthesis · Selection and Evolution · +2 more
Fig. 1.1 represents the link reaction.
With reference to Fig. 1.1:
name substances R and S
R = ______
S = ______
explain what happens to the reduced NAD.
The pH of the blood of an athlete decreases during a race and returns to its normal level after the race. The decrease in the pH of the blood is caused by the presence of waste products that have been excreted by cells during respiration.
Name the waste products that are excreted and describe what occurs to these products to help return the pH of the blood back to a normal level.
The rest of this paper
9 more questions- Q2Photosynthesis9M
- Q3Control and Coordination9M
- Q4Selection and Evolution · Inheritance14M
- Q5Genetic Technology · Inheritance12M
- Q6Homeostasis12M
- Q7Inheritance9M
- Q8Classification, Biodiversity and Conservation11M
- Q9Homeostasis15M
- Q10Control and Coordination15M