Topic 1 - Cell biology
Question 1
SLPaper 2Outline reasons for the therapeutic use of stem cells.
Describe how leaf cells make use of light energy.
Explain how cells and cell components in the blood defend the body against infectious disease.
Question 2
SLPaper 2Describe briefly the endosymbiotic theory.
Outline how photosynthesis produces glucose.
Discuss the control of blood glucose levels and the consequences if they are not maintained.
Question 3
SLPaper 1Cisplatin is an anti-cancer drug that prevents tumour cells from dividing by mitosis as it inhibits cell processes at stage S of interphase. How does cisplatin prevent cancer cells from dividing?
Question 4
SLPaper 1Which statement provides evidence for endosymbiosis?
Question 5
SLPaper 2According to the cell theory, living organisms are composed of cells.
Draw the ultrastructure of a prokaryotic cell based on electron micrographs.
Outline what occurs in cells in the first division of meiosis.
Explain the role of cells in the defence against infectious disease.
Question 6
SLPaper 2Draw a labelled diagram to show the fluid mosaic model of the plasma membrane.
Unicellular and multicellular organisms share the same functions of life. Outline four functions of life.
The structure of organisms is based on organic molecules containing carbon. Explain the cycling of carbon in an ecosystem.
Question 7
SLPaper 1The image is of a Paramecium
Which function is accomplished by structures X and Y in the paramecium?
Question 8
SLPaper 1What special property of phospholipid molecules explains their ability to spontaneously assemble into a lipid bilayer?
Question 9
SLPaper 1Pasteur carried out a series of experiments that provided strong evidence against a widely supported theory. What was this theory?
Question 10
HLPaper 2Every cell is surrounded by a cell surface membrane which regulates the movement of materials into and out of the cell.
Discuss alternative models of membrane structure including evidence for or against each model.
Outline the process used to load organic compounds into phloem sieve tubes.
