Purple non-sulphur bacteria is an example of___________?
Correct answer: C. Photosynthetic bacteria
- A. Heterotrophic bacteria
- B. Chemosynthetic bacteria
- C. Photosynthetic bacteria
- D. Saprotrophic bacteria
Explanation
Purple non-sulphur bacteria use light energy to make ATP, so they are classified as photosynthetic bacteria, although many obtain organic compounds from their environment. Students may choose heterotrophic bacteria because these organisms often use organic carbon, but the defining feature in this question is their use of light.
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About Prokaryotic and Eukaryotic Cells
Prokaryotic cells lack a membrane-bound nucleus and complex membrane-bound organelles, whereas eukaryotic cells contain a nucleus, specialized organelles and a cytoskeleton. Comparisons include DNA organization, ribosomes, cell walls, size, division and examples such as bacteria, archaea, protists, fungi, plants and animals.
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