Biology

What do we call things that directly affect all activities of cells?

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What type of plants always contain a xylem and phloem?
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What is whole blood minus the cells called?
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Which of the following is not an arthropod?
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The definition of "large group aquatic plants" best fits what science term?
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Which of these is a way dogs communicate with each other?
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Which of these living creatures does not belong in the same group?
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What is the average natural lifespan of an African elephant?
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What North American animal is mistakenly called a buffalo?
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