Highschool Kenya Revision Material: 2023 Notes, Free Exams with Marking Schemes
Kcse Revision Papers and Predictions Free Download
Answer
Economic importance of the housefly and how it is controlled. The housefly is a vector which helps in spreading about 60 or more disease; this has been made possible through…
Transport of oxygen in mammalian body. Oxygen in alveoli diffuses into capillaries of lungs; In capillaries it enters Red Blood Cells and combines with haemoglobin to form oxyhaemoglobin / (02…
Oxygen concentration: high oxygen results in high rate of respiration / low oxygen leads to low respiration hence little energy. Age Affects Rate of Respiration: Young organism require more…
Digestion of Beef in the Mouth The food is mechanically broken down by chewing and grinding It is moistened by saliva; Digestion of Meat in the Stomach In the stomach,…
A leaf id adapted to Photosynthesis in the following ways: Leaves contain numerous chloroplasts which help in photosynthesis; Leaves have palisade cells which trap a lot of energy from the…
MARKING SCHEME BIOLOGY F2 1.Chloroplast ; (1mk) b) B: (1mk) c) A – Grana; contain chlorophyll, which traps light energy ,enabling light reaction of photosynthesis to take place ; B…
1. They are felt needs 2. They cannot be postponed. 3. They must be satisfied before secondary wants 4. Lack of them may lead to death 5. They are universal
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