O Level Biology MCQs - Complete Course
Facts about Smoking MCQs App & e-Book Download - 449
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MCQ: 449
Which is true about Nicotine (C10H14N2)
- a carcinogenic substance
- makes blood clot easily
- makes blood dilute
- helps in lumen becoming narrower
b
O Level Biology App & e-Book Tests PDF Download
Fat rich foods Test 460
Oxidation and Respiration Test 461
Biological Science Test 462
Leaf Adaptations for Photosynthesis Test 463
Types of Flowers Test 464
Denaturation of Enzymes Test 465
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Kidneys as Osmoregulators Test 467
Aerobic respiration and its waste Test 468
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