The Kenya National Examination Council - 550 Words

The Kenya National Examination Council (Term Paper Sample) Content: Nameà ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬. Index Numberà ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬/à ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬121/2 Candidates Signatureà ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬BIOLOGY ALT A Dateà ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬..PAPER 1OCT/NOV 20152 HoursTHE KENYA NATIONAL EXAMINATION COUNCILKenya Certificate of Secondary EducationBIOLOGYPAPER 12 HoursInstruct ions to candidates * Write name and index number in the spaces provided above. * Sign and write the date on the space provided above * Answer ALL the questions in this question paper in the spaces provided * Candidates should check the question paper to ascertain all pages are printed as indicated and that no questions are missing.FOR EXAMINERS USE ONLY Grand-Total1. State two properties of the cell membrane. (2mks)____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________2. Outline two precautions taken during collection and observation of live specimens. (2mks)______________________________________________________________________________________________________________________________________________ ______________________________________________________________________________________________________________________________________________________________________________________3. (a) What is the formula for calculating linear magnification using a light microscope. (1mk)___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________(b) State two functions of centrioles. (2mks)____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________4. Describe how diffusion gradient affects the rate of diffusion. (3mks)____________________________________ ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________5. What is a guard cell? (2mks)____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________6. State the specific sites in which the following reactions occur: (2mks)(i) Light stage.___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________.(ii) Dark stage.____ _______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________7. Plants relatively have less waste to excrete than animals. Giving two reasons to explain thisObservation. (2mks)____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________8. (a) Name the gap in the lower jaw of a herbivore that facilitate movement of the tongueduring chewing. (1mk)________________________________________________________________________________________________________________________________________________________________________________________________________________ ___________________________________(b) Name two substances absorbed into the blood from the stomach in man. (2mks)____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________9. (a) Give two reasons why lower organisms such as bacteria and simple multicellularOrganisms do not have an elaborate transport system. (2mks)____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________(b) Explain how the shape of erythrocytes helps it to function efficiently. (1mk)__________ _________________________________________________________________________________________________________________________________________________________________________________________________________________________________________10. Explain leaf fall as a factor affecting transpiration rate. (3mks)____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________.11. List three structures where gaseous exchange occurs in amphibians. (3mks)____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ ________________________________12. State two causes of Asthma. (2mks)____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________13. Give two factors affecting the rate of respiration. (2mks)____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________14. (a) Aerenchyma tissues and pneumatophores are found in plants occupying differentHabitats, Identify these habitats. (2mks)___________________________________________________________________________________________ _________________________________________________________________________________________________________________________________________________________________________________________________________________________________________(b) What is the function of pneumatophores? (1mk)____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________15. Name two excretory products produced by both plants and animals. (2mks)____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ ________16. What is the meaning of the following terms as they apply to cells(i) Eukaryotes. (1mk).___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________(ii) Prokaryotes. (1mk)__________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________17. What is the effect of anti-diuretic hormone (ADH) in the human body. (2mks)______________________________________________________________________________________________________________... The Kenya National Examination Council - 550 Words The Kenya National Examination Council (Term Paper Sample) Content: Nameà ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬. Index Numberà ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬/à ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬121/2 Candidates Signatureà ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬BIOLOGY ALT A Dateà ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬Ãƒ ¢Ã¢â€š ¬..PAPER 1OCT/NOV 20152 HoursTHE KENYA NATIONAL EXAMINATION COUNCILKenya Certificate of Secondary EducationBIOLOGYPAPER 12 HoursInstruct ions to candidates * Write name and index number in the spaces provided above. * Sign and write the date on the space provided above * Answer ALL the questions in this question paper in the spaces provided * Candidates should check the question paper to ascertain all pages are printed as indicated and that no questions are missing.FOR EXAMINERS USE ONLY Grand-Total1. State two properties of the cell membrane. (2mks)____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________2. Outline two precautions taken during collection and observation of live specimens. (2mks)______________________________________________________________________________________________________________________________________________ ______________________________________________________________________________________________________________________________________________________________________________________3. (a) What is the formula for calculating linear magnification using a light microscope. (1mk)___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________(b) State two functions of centrioles. (2mks)____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________4. Describe how diffusion gradient affects the rate of diffusion. (3mks)____________________________________ ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________5. What is a guard cell? (2mks)____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________6. State the specific sites in which the following reactions occur: (2mks)(i) Light stage.___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________.(ii) Dark stage.____ _______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________7. Plants relatively have less waste to excrete than animals. Giving two reasons to explain thisObservation. (2mks)____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________8. (a) Name the gap in the lower jaw of a herbivore that facilitate movement of the tongueduring chewing. (1mk)________________________________________________________________________________________________________________________________________________________________________________________________________________ ___________________________________(b) Name two substances absorbed into the blood from the stomach in man. (2mks)____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________9. (a) Give two reasons why lower organisms such as bacteria and simple multicellularOrganisms do not have an elaborate transport system. (2mks)____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________(b) Explain how the shape of erythrocytes helps it to function efficiently. (1mk)__________ _________________________________________________________________________________________________________________________________________________________________________________________________________________________________________10. Explain leaf fall as a factor affecting transpiration rate. (3mks)____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________.11. List three structures where gaseous exchange occurs in amphibians. (3mks)____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ ________________________________12. State two causes of Asthma. (2mks)____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________13. Give two factors affecting the rate of respiration. (2mks)____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________14. (a) Aerenchyma tissues and pneumatophores are found in plants occupying differentHabitats, Identify these habitats. (2mks)___________________________________________________________________________________________ _________________________________________________________________________________________________________________________________________________________________________________________________________________________________________(b) What is the function of pneumatophores? (1mk)____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________15. Name two excretory products produced by both plants and animals. (2mks)____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ ________16. What is the meaning of the following terms as they apply to cells(i) Eukaryotes. (1mk).___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________(ii) Prokaryotes. (1mk)__________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________17. What is the effect of anti-diuretic hormone (ADH) in the human body. (2mks)______________________________________________________________________________________________________________...