Answer:
<h2>Concentration Gradient </h2>
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Explanation:
HIV virus is an RNA virus
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Chromatin fibers are coiled and condensed to form chromosomes. Chromatin makes it possible for a number of cell processes to occur including DNA replication, transcription, DNA repair, genetic recombination, and cell division.
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QUESTION NUMBER ONE IS A AND FOR QUESTION NUMBER TWO IT IS B
The concave disc shape of red blood cells Maximizes the surface area of the cell , allowing for rapid movement of oxygen or carbon dioxide to and form the hemoglobin within the cell.