Unlike eukaryotes, prokaryotes have no membrane-bound organelles. How, then, are prokaryotes able to generate energy?
Correct answer: D. Prokaryotes generate proton gradients across their plasma membranes
- A. Prokaryotes generate sodium gradients across their nuclear membranes
- B. Prokaryotes do not generate energy
- C. Prokaryotes produce energy via photosynthesis
- D. Prokaryotes generate proton gradients across their plasma membranes
Explanation
Although prokaryotes lack mitochondria and other membrane-bound organelles, they are able to generate a proton gradient across their cell membranes, and thus produce ATP by chemiosmosis.
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About Kingdom Prokaryotae
Kingdom Prokaryotae includes bacteria and cyanobacteria, organisms with no membrane-bound nucleus or membrane-bound organelles. It covers their cell wall, capsule, flagella, plasmids, forms of nutrition, binary fission, useful and harmful roles, and the differences between prokaryotic cells and eukaryotic cells.
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