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Cellular and Molecular Biology

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Organelles for Energy Conversion

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In the following paragraph, highlight the word or phrase that is INCORRECT.

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Eukaryotic cells are characterized by the presence of various types of internal structures, some of them enclosed by membranes, called organelles. The organelles primarily responsible for energy conversion are mitochondria and chloroplasts. Mitochondria are found in most species of eukaryotes except for plants. The mitochondrion is primarily responsible for the process of cellular respiration, which extracts energy in the form of ATP molecules from the metabolism of carbohydrates. Chloroplasts, which are not present in cells of animals, fungi, and most protists, are primarily responsible for photosynthesis. In photosynthesis, light energy is used to synthesize complex organic molecules from simpler inorganic molecules.