2022 - PRE-PLE SERIES 2 SCI-GUIDE

PRE-PLE EXAMINATION SERIES TWO itself” “Don’t speak for Quality, Let the Quality Speak for MR. JAMIE HUMPHERY: 0757 282305 2022 INTEGRATED SCIENCE MARKING GUIDE PREPARED BY: © 2022 Surekey Examinations Board - SKEB SUREKEY EXAMINATIONS BOARD MR. MUBIRU SULAIMAN: 0700 758668 2. Which digestive juice does not contain enzymes?  Bile juice/ Bile (Reject any other digestive juice)  Walking on food  Vomiting on food  Disposing its wastes on food The diagram below shows an equipment used to produce fuel. Use it to answer questions 6 and 7. 4. In which way is blubber useful to a whale when in water?  Keeps a whale warm  Acts as a food store  Generates /produces heat in the whale’s body SECTION A: 40 MARKS 1. Name the first type of teeth to grow in the mouth of a baby.  Incisors / incisor teeth. (Reject milk teeth) 5. State any one way in which a housefly contaminates food.  Rubbing germs on food using its hairy body  Lays eggs on food  Spitting on food  To prevent it from exploding/ bursting  To maintain proper temperature in the digester  To keep it free from accidents  To keep it from damage by children or animals 2 7. Give any one reason why the above equipment is buried in the ground. 3. Name the gas used by cattle farmers to preserve semen for artificial insemination.  Nitrogen (Reject liquid nitrogen) 6. Identify the fuel obtained from the above equipment.  Biogas/ methane gas 8. State any one way in which plant leaves are adapted to photosynthesis.  Presence