Answer:
C) It can show you which organism is most closely related to the human.
Explanation:
Different proteins might have same structure and function in different organisms
The ciliates<span> have both a </span>micronucleus<span> and </span>macronucleus<span>, which appear quite homogeneous in composition. The organelles of protozoa have functions similar to the organs of higher animals. The </span>plasma membrane<span> enclosing the </span>cytoplasm<span> also covers the projecting locomotory structures such as </span>pseudopodia<span>, </span>cilia<span>, and </span>flagella<span>.
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What textbook? Most of their power is from Hydroelectric dams (59% of it)