MG-Biology

Core Essay 2004

This is the questions as requested by one student:

7 (a) Outline the differences in structure between aminoacids and nucleotides. [6]
(b) Explain, with examples, the structural differencesbetween fibrous and globular proteins. [6]
(c) Describe, with examples, the roles of proteins inmembranes. [8]

8 (a) Describe the main features of homologous chromo­somes. [6]
(b) Outline the behaviour of chromosomes in meiosis. [8]
(c) Explain the need for a reduction division in meiosis. [6]


9 (a) Describe the main structural features of arteries inrelation to their functions. [8]
(b) Explain the significance of the difference in affinity foroxygen between haemoglobin and myoglobin. [6]
(c) Outline with examples, the main roles of capillaries. [6]

10 (a) Describe the main stages of the Calvin cycle. [8]
(b) Outline the role of NADP in photosynthesis. [6]
(c) Explain how ATP is synthesized using light energy in photosynthesis. [6]

11 (a) Outline the structure of xylem vessels in relation totheir function. [6]
(b) Describe the way in which water passes from root haircells to the leaves. [8]
(c) Explain why transpiration is the inevitable consequenceof gaseous exchange. [6]

MG

posted by MG-Biology @ 2:24 PM