Advanced level 2026 south west regional mock biology 2
Advanced level 2026 south west regional mock biology 2
a) Compare asexual reproduction and sexual reproduction
b) State two roles played by each of the following hormones in the menstrual cycle
(i) Follicle-stimulating hormone
(ii) Progesterone
(iii) Luteinizing hormone
(iv) Oestrogens
c) Explain the process of childbirth
(6, 8, 6 marks)
(Total = 20 marks)
a) Differentiate between
(i) Excretion and egestion
(ii) Ammonotelic and ureotelic modes of excretion, giving an example in each case.
b) Draw a large and neatly labelled diagram to show the structure of the human kidney nephron
c) Explain each of the following:
(i) The main steps in urine formation
(ii) The regulation of the blood glucose levels
(4, 5, 5, 6 marks)
(Total = 20 marks)
a) State FIVE differences between DNA and RNA
b) Why are lipids suitable storage compounds in living organisms?
c)
(i) Describe the FOUR levels of structural organization possible in a protein molecule
(ii) Why is the genetic code said to be non-overlapping and degenerate?
(5, 5, 8, 2 marks)
(Total = 20 marks)
a) Define the following types of nutrition and give a suitable example of each
(i) Autotrophic nutrition
(ii) Holozoic nutrition
(iii) Saprophytic nutrition
b) How are the following adapted to perform their digestive functions?
(i) The stomach
(ii) The ileum
c) Explain the roles of digestive hormones
(6, 4, 5, 5 marks)
(Total = 20 marks)
a) Define each of the following ecological terms
(i) An ecosystem (ii) Trophic level (iii) Edaphic factors (iv) Energy pyramid
b) In tabular form state the differences between
