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Explain the two modes of nutrition
i) Define the term nutrition. ii) Explain how nutrients are useful to living organisms.
Discuss the Role of Osmosis in Organisms
Explain the wilting process.
Discuss what would happen if a plant cell is placed in solutions of varying concentrations.
Discuss what would happen if an animal cell, say red blood cell is placed in solutions of varying concentrations.
Describe an experiment for the demonstration of Osmosis Using a Visking Tubing.
Describe an experiment for the demonstration of the process of diffusion using potassium manganate (VII).
Define the term osmotic potential.
Explain osmotic pressure
Explain the process of Osmosis
Explain how materials move in and out of the cells through Diffusion.
Define cell physiology and give examples.
(i) What is an organ system? (ii) Explain the organ system in animals.
a)i) What is an organ? ii) Name and explain the types of organs in: a) animals b) plants
a) i) What is a tissue? ii) Name and explain the types of tissues in : a) animals b) plants
Explain the rules that should be observed when handling a microscope.
Describe the functions of parts of a light microscope.
What is the role of mineral salts in the creation of electric tension (voltage) at the cellular level?
What is the role of mineral salts in osmotic regulation?
What are the main positive ions found in living organisms?
What are the main properties of water that make it so special for life?
Which kind of polarity do water-soluble and fat-soluble substances demonstrate?
What is the importance of water for enzyme activity?
Water plays a key role in organic reactions. What are examples of two types of organic reactions in which water is either an input or an output?
Why are maggots allergic to light?
Describe the mechanism of gaseous exchange in mammals.
Highlight the basic procedures that are followed in binomial nomenclature.
State what would happen in each of the following: (a)if a plant cell is kept in; (i)strong salt solution (i)distilled water (b)if a red blood cell is kept in; (i)distilled water (ii)concentrated salt solution
What happens when the arrector pili muscles of the skin contract?