HIGHER TIER UNIT 2 SCIENCE 0.0 / 5 ? ScienceUNIT 2GCSEOCR Created by: BananaBee11Created on: 02-02-16 19:23 The energy is faeces can be used by other organisms, describe how? broken down by decomposers such as beetles or insects 1 of 9 Explain how proteins in the leaves change into nitrates leaves decay then ammonia forms nitrifying bacteria converting into ammonia nitrate 2 of 9 explain one way animals bodies are adapted to reduce heat loss thick fur insulates by trapping air particles 3 of 9 Write about biochemical adaptations to very cold climates. contain enzymes with lower optimum temperatures but cells do not freeze as freezing would damage cells 4 of 9 Why do scientists publish their results? so other scientists can gather further evidence or further their own work. so they can gain credit for their work or so work can be checked 5 of 9 how do plant fertilisers increase crop yield? fertilisers replace essential elements used by previous crop / provide extra essential elements + used to build plant amino acids 6 of 9 write the balanced symbol equation for N2+H2-->NH3 N2+3H2-->2NH3 7 of 9 Why is a catalyst used for? speeds reaction 8 of 9 why is high pressure needed? increases of yield 9 of 9
EDEXCEL GCSE 9-1 COMBINED SCIENCE HIGHER SAMPLE ASSESSMENT MATERIAL PAPER 1 BIOLOGY 1 QUESTION PAPER 0.0 / 5
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