CAIE A-Level Biology A2 14.1.7 Nephron Structure and Function Questions
Explain nephron structure and function using evidence from each question and mark scheme.
- Syllabus
- 2028–2030
- Course
- Biology 9700
- Level
- A2
Explain nephron structure and function using evidence from each question and mark scheme.
Describe and explain how the cells of the proximal convoluted tubule are adapted to carry out selective reabsorption.
any five from:
1 microvilli / basal membrane folds, increase / give large, surface area ;
2 for / many, (named) transport proteins ;
3Na+/ sodium ions, and, glucose / amino acids, move / co-transported, into cell (from filtrate / lumen) ;
4Na+sodium ions, pumped / move (out of cell) to, blood / tissue fluid ;
5 ref. to active transport ;
6 many mitochondria, give / for, energy / ATP ;
7 tight junctions and reason ;