ii) Account for the observations made. (3 marks) Distinguish between cell physiology and cell specialization. (2 marks) The diagram below represents a simplified nitrogen cycle. Name the group of bacteria represented by: (2 marks) A ______________________________________________________________________________ B ______________________________________________________________________________ i) Name the group of organisms represented by C. (1 mark) ii) Give the reasons for your answer in b (i) above. (2 marks) i) Define the term nitrification. (1 mark) ___________________________________________________________________________________ ii) Explain how excessive use of pesticides will affect nitrification. (2 marks) a) i) What are vestigial structures? (1 mark)
ii) Account for the observations made. (3 marks) Distinguish between cell physiology and cell specialization. (2 marks) The diagram below represents a simplified nitrogen cycle. Name the group of bacteria represented by: (2 marks) A ______________________________________________________________________________ B ______________________________________________________________________________ i) Name the group of organisms represented by C. (1 mark) ii) Give the reasons for your answer in b (i) above. (2 marks) i) Define the term nitrification. (1 mark) ii) Explain how excessive use of pesticides will affect nitrification. (2 marks) a) i) What are vestigial structures? (1 mark) ___________________________________________________________________________________
bio-p23.docx