BIOLOGY
CLASSIFICATION OF VITAMINS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Autotrophs
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Heterotrophs
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Either A or B
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None of the above
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Detailed explanation-1: -All bacteria obtain energy by oxidizing preformed organic molecules (carbohydrates, lipids and proteins) from their environment. Metabolism of these molecules yields ATP as an energy source.
Detailed explanation-2: -As we can see from the discussion, most bacteria are heterotrophs while some are photo or chemosynthetic autotrophs. Therefore, the correct answer is option D (Mostly bacteria are heterotrophic but some autotrophic).
Detailed explanation-3: -Some varieties of bacteria use light to create their own food, just like organisms that use photosynthesis. However, these bacteria are not autotrophs, because they must rely on chemicals besides carbon dioxide for carbon. These strange bacteria are called photoheterotrophs.