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1. Explain the following concepts in relation to plant movements under the following


headings; definition, purpose and stimulus.


a) Gravitropism


b) Phototropism


c) Thirgmorphogenesis


d) Nyctinasty (20 marks)


2. Explain the role of the following compounds in a plant


a) Cutin


b) Suberin


c) Pyrethroids


d) Anthocyanins (8 marks)


3.


i) Give a definition of a plant hormone (2 marks)


ii) Describe the effects of the following major plant hormones (Auxins, Gibberelins,


Cytokinins, Abscisic acid and Ethylene) on the plant.

Illustrate/Label Mitosis and Meiosis. Compare and Contrast both explaining Cell Division. Which is Asexual Reporduction and Sexual Reproduction? Why?





Is Protein a Polymer?, does it contain a amino

group?, is it formed by hydrolysis?, is it an energy storage molecule?, is it

made up of a triglyceride?, is it one of the monomers that combines to form

starch? does it contain glycosidic bonds?


Make use of a neat, annotated schematic representation to discuss the structure and function of demosomes. (9 marks )

How do diffusion, facilated transport, osmosis and active transport differ? (8 marks)

Make a list of the membranous organelles of a eukaryotic cell and describe the function of each (8 marks )

What happens to plant and animal cells placed in solutions of different concentrations


Human cheek cells were placed in a solution more concentrated than their cytoplasm. State the effect this would have on the appearance of the cells



A person dunks their hand in ice cold water for 5 minutes. Explain why this would mean the person would find it difficult to clench a fist for a few minutes after removing their hand from the water.


you are told that cells on a microscope slide are plant,animal, or bacerial. you look through a microscope and see cell walls and menbrane bound organelle. you conclude that the cells


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