1) One physical barrier against disease is skin, name another one a) cilia in trachea b) acid in stomach c) antibodies 2) Salmonella bacteria can get into the body ..... a) via breathing in b) drinking contaminated water c) eating contaminated food d) being bitten by a mosquito 3) Antibiotics work against a) bacteria b) viruses c) neither of the above 4) Other than antibiotics what else can prevent bacteria growth? a) antiseptics b) paracetamol c) aspirin 5) Euglena belongs to which kingdom? a) animalia b) plantae c) prokaryote d) protoctista 6) What is the function of the nucleus? a) absorbs light for photosynthesis b) controls the cell's activities c) carries oxygen 7) What is the function of 'chloroplasts'? a) carries DNA b) absorbs light for photosynthesis c) is the outer sructure of the cell. 8) Euglena is difficult to classify because it contains chloroplasts so it could be classified as a ..... a) animal b) plant 9) Are viruses living things? a) True b) False 10) viruses do not convert food in energy a) True b) False 11) Which ingredient in cigarettes is addictive? a) carbon monoxide b) tar c) nicotine 12) carbon monoxide combines with _______ in red blood cells which prevents them carrying oxygen a) halogen b) helium c) haemoglobin 13) A smoker would have less oxygen in their blood than a non smoker a) True b) False 14) What is a carcinogen? a) a disease b) a cancer causing substance c) type of bacteria 15) 'Explain' means .......... a) saying what something looks like b) using scientific knowledge to extend a point made c) describing something.

B1 classification asam

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