GCSE Science Unit 1 Biology 0.0 / 5 ? ScienceThe human bodyGCSEOCR Created by: danaharveyCreated on: 28-04-14 18:30 Write down a pair of sex chromosomes that are in each cell of a human male. XY 1 of 10 Explain how equal numbers of female and male offspring are produced. ** and XY are seen as the parent genotypes & ** and ** and XY and XY are seen as offspring genotypes. 2 of 10 The position of the eyes on the head of a macaw makes it difficult to judge distance. Explain why. The macaw has monocular vision and cannot compare images from both eyes. 3 of 10 The retina is part of the eye. Describe the job of the retina. The retina is part of the eye that contains receptors that can detect light. 4 of 10 It takes 120 minutes to remove the alcohol from the blood. This is different to the average adult. Explain why. He may have a different mass, weight or size than an average adult. 5 of 10 Explain how depressants slow down the transmission of nerve impulses. They act on synapses by the depressant blinding with the receptor molecule. 6 of 10 Write down two ways to reduce high blood pressure. Regular exercise and loose weight. 7 of 10 Explain how sweating works and why it is necessary. Works through evaporation and is important to maintain body temperature of lose extra heat. 8 of 10 Measles, mumps and rubella cannot be treated with antibiotics. Suggest why. As they are diseases not caused by bacteria. 9 of 10 Explain how vaccination (immunisation) works. Harmless pathogens carry antigens, white blood cells carry antibodies and the memory cells remain. 10 of 10
EDEXCEL GCSE 9-1 COMBINED SCIENCE HIGHER SAMPLE ASSESSMENT MATERIAL PAPER 1 BIOLOGY 1 QUESTION PAPER 0.0 / 5
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