2020 Biology Paper 3 Flashcards
1
Q
What is the main function of the distal convoluted tubule?
A
Reabsorbtion of ions
2
Q
What is the function of microvilli in the proximal convoluted tubule?
A
To increase the surface area for reabsorbtion
3
Q
Why might a t-test be used?
A
When comparing two means
4
Q
Why does foetal haemoglobin have a higher oxygen affinity than adult haemoglobin?
A
- There is a low partial pressure of oxygen in the placenta.
- Oxygen is transferred from adult to foetal haemoglobin in the placenta.
- The foetus receives sufficient oxygen for respiration.
