The endosymbiotic theory explains the origin of eukaryotic cells and how they got their chloroplasts and mitochondrion.
Based on theory, it is said that mitochondria and chloroplasts were originally single prokaryotic organisms that were engulfed by the eukaryote. (It is found that mitochondria and chloroplasts have their own DNA, so that is why it is thought that they were not originally a part of the eukaryotic cell.) Anyway, mitochondria and chloroplast soon developed inside of the eukaryote and became a necessity of the cell.
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Answer:
Sedimentary rocks are normally laid down in order, one on top of another. In a sequence, the oldest is at the bottom, the youngest is at the top. This is the principle of 'superposition'.
Explanation:
A. RNA
Transcription is the process of copying a code of DNA to a RNA strand.
Each population is characterized by a certain percentage of asexual and sexual reproduction. The percentage of asexual reproduction ranges between 0% (complete sexual reproduction) and 100% (all the females reproduce by gynogenesis).
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The correct answer is satatement c. Tye statement says: "Carbohydrates are long,winding molecules made up of amino acids and are important in the synthesis of fats and hormones."
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