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