- Describe an experiment for the demonstration of the process of diffusion using potassium manganate (VII).(Solved)
Describe an experiment for the demonstration of the process of diffusion using potassium manganate (VII).
Date posted: May 8, 2018.
- Define the term osmotic potential(Solved)
Define the term osmotic potential.
Date posted: May 8, 2018.
- Explain osmotic pressure(Solved)
Explain osmotic pressure
Date posted: May 8, 2018.
- Explain the process of Osmosis (Solved)
Explain the process of Osmosis
Date posted: May 8, 2018.
- Explain how materials move in and out of the cells through Diffusion.(Solved)
Explain how materials move in and out of the cells through Diffusion.
Date posted: May 8, 2018.
- Define cell physiology and give examples. (Solved)
Define cell physiology and give examples.
Date posted: May 8, 2018.
- (i) What is an organ system? (ii) Explain the organ system in animals. (Solved)
(i) What is an organ system?
(ii) Explain the organ system in animals.
Date posted: May 8, 2018.
- (a)(i) What is an organ? (ii) Name and explain the types of organs in: (a) animals (b) plants (Solved)
a)i) What is an organ?
ii) Name and explain the types of organs in:
a) animals
b) plants
Date posted: May 8, 2018.
- (i) What is a tissue? (ii) Name and explain the types tissues in : (a) animals (b) plants (Solved)
a) i) What is a tissue?
ii) Name and explain the types of tissues in :
a) animals
b) plants
Date posted: May 8, 2018.
- Explain the rules that should be observed when handling a microscope. (Solved)
Explain the rules that should be observed when handling a microscope.
Date posted: May 8, 2018.
- Describe the functions of parts of a light microscope. (Solved)
Describe the functions of parts of a light microscope.
Date posted: May 8, 2018.
- What is the role of mineral salts in the creation of electric tension (voltage) at the cellular level?(Solved)
What is the role of mineral salts in the creation of electric tension (voltage) at the cellular level?
Date posted: May 7, 2018.
- What is the role of mineral salts in osmotic regulation?(Solved)
What is the role of mineral salts in osmotic regulation?
Date posted: May 7, 2018.
- What are the main positive ions found in living organisms?(Solved)
What are the main positive ions found in living organisms?
Date posted: May 7, 2018.
- What are the main properties of water that make it so special for life?(Solved)
What are the main properties of water that make it so special for life?
Date posted: May 7, 2018.
- i) Does water have a small or large heat capacity?
ii) What is the biological significance of this characteristic?(Solved)
i) Does water have a small or large heat capacity?
ii? What is the biological significance of this characteristic?
Date posted: May 7, 2018.
- Which kind of polarity do water-soluble and fat-soluble substances demonstrate?(Solved)
Which kind of polarity do water-soluble and fat-soluble substances demonstrate?
Date posted: May 7, 2018.
- What is the importance of water for enzyme activity?(Solved)
What is the importance of water for enzyme activity?
Date posted: May 7, 2018.
- 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...(Solved)
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?
Date posted: May 7, 2018.
-
1)i) What is the approximate percentage (in mass) of water in the human body?
ii) Do you think this percentage is larger in adults or...(Solved)
1)i) What is the approximate percentage (in mass) of water in the human body?
ii) Do you think this percentage is larger in adults or in the elderly?
Date posted: May 7, 2018.
- Why are maggots allergic to light?(Solved)
Why are maggots allergic to light?
Date posted: May 4, 2018.
- Describe the mechanism of gaseous exchange in mammals(Solved)
Describe the mechanism of gaseous exchange in mammals.
Date posted: May 3, 2018.
- Highlight the basic procedures that are followed in binomial nomenclature(Solved)
Highlight the basic procedures that are followed in binomial nomenclature.
Date posted: May 1, 2018.
- State what would happen in each of the following:
(a)if a plant cell is kept in;
(i)strong salt solution
...(Solved)
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
Date posted: April 30, 2018.
- What happens when the arrector pili muscles of the skin contract?(Solved)
What happens when the arrector pili muscles of the skin contract?
Date posted: April 30, 2018.
- Discuss the adaptations of the following plants to their various habitats (i) Xerophytes (ii) Mesophytes (iii)Halophytes (iv) Hydrophytes(Solved)
Discuss the adaptations of the following plants to their various habitats.
i) Xerophytes
ii) Mesophytes
iii)Halophytes
iv) Hydrophytes
Date posted: April 30, 2018.
- Describe the evidences of organic evolution(Solved)
Describe the evidences of organice evolution.
Date posted: April 30, 2018.
- What makes diseases caused by viruses and bacteria hard to treat?(Solved)
What makes diseases caused by viruses and bacteria hard to treat?
Date posted: April 29, 2018.
- How are leaves of mesophytes adapted to their functions? (Solved)
How are leaves of mesophytes adapted to their functions?
Date posted: April 28, 2018.
- Why is it advisable to feed 100kg of grain to man instead of using it to fatten steers then supply beef to human population? (Solved)
Why is it advisable to feed 100kg of grain to man instead of using it to fatten steers then supply beef to human population?
Date posted: April 28, 2018.