1) What is the Basic unit of Life? a) Cell b) Ecosystem c) Environment d) Chromosomes 2) What does DNA stands for? a) Deoxyribonucleic acid b) Do not disturb c) Deoxyribonuclear assid d) Deoxyribonucleic azid 3) How many chromosome does Humans have? a) 23 b) 48 c) 24 d) 46 4) What do You called to the largest artery in our body? a) Aorta b) vein c) blood d) white blood cells 5) What do you called to the cells that helps fight infections in our body? a) White blood cells b) Red blood cells c) Blood d) Skin cells

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