Biology 9700/42 — February/March 2023
Cambridge A-Level · A Level Structured Questions · worked solutions for every part, with the mark scheme
Topics Inheritance · Genetic Technology · Selection and Evolution · Control and Coordination · Homeostasis · Energy and Respiration · +2 more
Fig. 1.1 is a drawing of a longitudinal section (LS) of a human kidney.
Use the letters A, B, C and D in Fig. 1.1 to complete Table 1.1.
Each letter may be used once, more than once or not at all.
For each description, list all the letters that are correct.
Table 1.1
| description | region of kidney |
|---|---|
| location of loops of Henle | ........................ |
| location of Bowman’s capsules | ........................ |
| location of glomeruli | ........................ |
| contains urine at final concentration | ........................ |
The volume and water potential of the urine produced by the kidney vary according to the water potential of the blood. This is a result of osmoregulation.
Describe the role of aquaporins in osmoregulation.
Describe the role of the brain in osmoregulation when the water potential of the blood increases above the set point.
The rest of this paper
9 more questions- Q2Inheritance · Genetic Technology · Selection and Evolution13M
- Q3Selection and Evolution · Genetic Technology10M
- Q4Genetic Technology · Inheritance10M
- Q5Inheritance8M
- Q6Energy and Respiration9M
- Q7Control and Coordination7M
- Q8Photosynthesis11M
- Q9Control and Coordination10M
- Q10Classification, Biodiversity and Conservation12M