Mitosis/Meiosis Cell Division Activity Chapter 8 Biology

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answer: collecting information/data

reason: the student is going around and asking people questions to collect data

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many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.