(b) A motor car called Land Cruiser is able to move, uses energy by oxidizing fuel, gives out carbon dioxide and water vapour, requires maintenance and becomes old. Give reasons why it is not classified as a living organism.
(b) In a certain species, two homozygous individuals mated and resulting offspring in Fl was heterozygous with the same phenotype. However in the second filial generation (F2) a new heterozygous phenotype was obtained which looked different from the parents in F1 With the help of genetic diagrams, explain how individuals with different phenotype in F2 were obtained.
7.(a) A group of Form IV students from Manyanya Secondary School had a study visit to Mt. Meru Hospital. They noted a patient with sunken eyes, severe dehydration, weak pulse, deep breathing, vomiting and convulsions.
(i)What could be the possible disease that this patient was suffering from?
(ii)Suggest preventive measures for the disease in 7 (a) (i) above.
11.Most of the young people today practice risky behaviours thinking that it is a modern style of life. This is a wrong concept. Discuss the factors which contribute to risky behaviours among young people in the society and their consequences.
13.Some chemical reactions take place inside the living systems. Some of the products given out are harmful if allowed to accumulate; these are known as excretory products. Explain the excretory products in human beings based on the excretory organ involved in each product, where it is produced and its effects to the human body.