Explanation: Prokaryotes are unicellular organisms that lack organelles or other internal membrane-bound structures. ... Some bacteria have a capsule outside the cell wall. Other structures are present in some prokaryotic species, but not in others.
Bacteria help break down some foods.
Bacteria have cytoplasm and ribosomes which are common with the cells of other living organisms
Photosynthetic bacteria may be able to live without solar light, instead using thermal radiation from hot fluid for energy, according to a study in this week's PNAS. Researchers led by J. Thomas Beatty of the University of British Columbia, Vancouver, have found obligately photosynthetic green sulfur bacteria at a deep-sea hydrothermal vent more than a mile below the ocean surface.
The correct answer is statement A, that is, Bacteria help break down some foods.
Bacteria helps in the digestion of foods in various kinds of animals. Deer, cows, sheep, and other ruminants exhibit a huge organ called rumen in which bacteria thrive and assists in dissociating cellulose fibers and other tough plant substances. In humans, bacteria called E.coli exist everywhere in the digestive tract, helping in the digestion of various kinds of food.
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