Identify the kingdoms. check all that apply.

answer:

there are seven major levels of classification: kingdom, phylum, class, order, family, genus, and species. the two main kingdoms we think about are plants and animals.

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.

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