It is A) a polymer.
Because Polymer is a large molecule and made of smaller molucules and they are called monomers
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D is your answer
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the insertion on removal of mutations are dangerous in nature. the process is basically just one large gamble to see what it does. and even though we have a decent understanding of the genomes of many animals and plants, we still dont know everything. so if we tamper with certain genes we may cause a evolution or we might kill the subject and the potential for it to procreate.
Most of the metabolic work is in the:
Cell Body
Photosynthesis occurs in the Chloroplasts.
The respiration takes place in the Mitochondria.
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