Which one of the following cell organelles is enclosed by a single membrane?
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The two polypeptides of human insulin are linked together by: |
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In which of the following, all three are macronutrients? |
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Which of the following statements is wrong for viroids? |
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Analogous structures are a result of: |
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Select the incorrect statement: |
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Which one of the following characteristics is not shared by birds and mammals? |
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Which of the following statements is not correct? |
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Seed formation without fertilization in flowering plants involves the process of: |
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Which of the following approaches does not give the defined action of contraceptive? |
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The amino acid Tryptophan is the precursor for the synthesis of: |
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