The broad theme of biology which muscle illustrates is STRUCTURE AND FUNCTION.
Different cells in the body have specific components which help them to carry out their functions. The structure of an organ usually determine the kind of work and function it will perform.<span />
Eukaryotic cells contain membrane-bound organelles, such as the nucleus, while prokaryotic cells do not. Differences in cellular structure of prokaryotes and eukaryotes include the presence of mitochondria and chloroplasts, the cell wall, and the structure of chromosomal DNA.
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Correct answer is A.
we know that carbon have 4 outer shell electrons so it can make 4 bonds and complete its octet and be stable.
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Heat moves in the direction from hot to cold