Biology Mcqs Online Test 5 Preparation Question Answer
Blood is carried towards the heart by __________? . The branch of biology which deals with the study of social behavior and communal life of human beings living in any environment is called ? A structure formed by groups of similar cells organized into loose sheets or bundles performing similar functions is called as: Out of 92 naturally occurring chemical elements how many are considered as bio-elements? __ is essential for the formation of hemoglobin? Haemodialysis means cleaning of? Oxygen accounts for ____ % of totals human body mass? Which one of them is a micro-molecule? _____ are needed as a source of energy for the vital activities of the body? The atoms of different elements combine with each other through ionic or covalent bonding to produce compounds this stable form is called:
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