Get premium membership and access questions with answers, video lessons as well as revision papers.
a) - Compounds of carbon, hydrogen and oxygen
- The elements are in the ratio of I carbon: 2 hydrogen: 1 oxygen
b) Carbohydrates are divided into three categories:
i. Sugar further into:-monosaccharide and disaccharide
ii. Oligo-saccharides
iii. Polysaccharides
i) Sugars
- Soluble in water giving clear solutions
- They are sweet with varying levels of sweetness i.e fructose-sucrose-glucose-lactose
- They are readily absorbed by the body when consumed
ii) Oligo saccharides
- Oligo means few and saccharides means sugars
- They are slowly digested through action of bacteria resulting in production of gas in the stomach condition called flatulence.
iii) Polysaccharides
- They are made up of long chains of sugar units eg starch, cellulose, glycogen and pectin
- Pectin and cellulose contribute in the production of roughage and they are generally energy giving foods
c) Production of chemical energy storage of starch(plants) and glycogen (animals) commercial
uses e.g. manufacture of paper, textiles.
simiyu kelly answered the question on September 15, 2017 at 13:49
- (a)What are organic compounds? (b) List the organic compounds(Solved)
a) What are organic compounds?
b) List the organic compounds
Date posted: September 15, 2017. Answers (1)
- Describe briefly the process of photosynthesis in plants(Solved)
Describe briefly the process of photosynthesis in plants.
Date posted: September 15, 2017. Answers (1)
- Differentiate the various modes of feeding(Solved)
Differentiate the various modes of feeding
Date posted: September 15, 2017. Answers (1)
- Explain briefly the role of active transport in living organisms.(Solved)
Explain briefly the role of active transport in living organisms.
Date posted: September 15, 2017. Answers (1)
- Explain briefly the role of osmosis in living tissues.(Solved)
Explain briefly the role of osmosis in living tissues.
Date posted: September 15, 2017. Answers (1)
- Discuss factors that affect the process active transport in living organisms.(Solved)
Discuss factors that affect the process active transport in living organisms.
Date posted: September 15, 2017. Answers (1)
- Discuss factors that affect the rates of diffusion in living organisms.(Solved)
Discuss factors that affect the rates of diffusion in living organisms.
Date posted: September 15, 2017. Answers (1)
- a) What is active transport? (b) State the factors affecting active transport(c) Why is oxygen important in the process of active transport?(Solved)
a. What is active transport?
b. State the factors affecting active transport
c. Why is oxygen important in the process of active transport?
Date posted: September 15, 2017. Answers (1)
- (a) What is osmosis? (b) Explain the roles of osmosis in living organisms(Solved)
a. What is osmosis?
b. Explain the roles of osmosis in living organisms
Date posted: September 15, 2017. Answers (1)
- a) What is diffusion? (b) State the factors affecting diffusion (c) Explain the roles of diffusion in living organisms gaseous exchange (d) Suggest an experiment to demonstrate diffusion(Solved)
a. What is diffusion?
b. State the factors affecting diffusion
c. Explain the roles of diffusion in living organisms gaseous exchange
d. Suggest an experiment to demonstrate diffusion
Date posted: September 15, 2017. Answers (1)
- Explain the properties of cell membrane(Solved)
Explain the properties of cell membrane.
Date posted: September 15, 2017. Answers (1)
- Describe the structure of cell membrane(Solved)
Describe the structure of cell membrane
Date posted: September 15, 2017. Answers (1)
- a) What is magnification? (b)Give the formula used to calculate magnification in a light microscope(Solved)
a. What is magnification?
b. Give the formula used to calculate magnification in a light microscope
Date posted: September 15, 2017. Answers (1)
- a) What is a microscope? (b)Name the types of microscopes. (c) State the purpose of using a light microscope. (d) Explain the procedure followed when using a...(Solved)
a. What is a microscope?
b. Name the types of microscope
c. State the purpose of using a light microscope
d. Explain the procedure followed when using a microscope
e. State the precautions that are necessary when handling a microscope
Date posted: September 15, 2017. Answers (1)
- a) Define the term cell (b) What is cell biology?(Solved)
a. Define the term cell
b. What is cell biology?
Date posted: September 15, 2017. Answers (1)
- a) What is a species? (b) Name the major kingdoms used in classification(Solved)
a. What is a species?
b. Name the major kingdoms used in classification
Date posted: September 15, 2017. Answers (1)
- 1. (a) what is classification? (b) List the external features used to classify plants (c) List the external features used to classify animals...(Solved)
a. What is classification?
b. List the external features used to classify plants
c. List the external features used to classify animals
d. Give the reasons why classification is important
e. Name the taxonomic units of classification in descending order
Date posted: September 15, 2017. Answers (1)
- 1. (a) What is a hand lens? (b) How is a hand lens used? (c) When is a hand lens used? (Solved)
a. What is a hand lens?
b. How is a hand lens used?
c. When is a hand lens used?
Date posted: September 15, 2017. Answers (1)
- State the characteristics of living organisms.(Solved)
State the characteristics of living organisms.
Date posted: September 15, 2017. Answers (1)
- Explain the importance of biology.(Solved)
Explain the importance of biology.
Date posted: September 15, 2017. Answers (1)