NEET Biology NEET PYQ-Kingdom Monera

  • question_answer
    A bacterium divides every 35 minutes. If a culture containing 105 cells per ml is grown for 175 minutes, what will be the cell concentration per ml after 175 minutes?               [AIPMT 1998]

    A) 175 × 105 cells

    B) 85 × 105 cells

    C) 35 × 105 cells

    D) 32 ×105 cells

    Correct Answer: D

    Solution :

    [d] \[1\times {{10}^{5}}\xrightarrow{35\,\text{min}}2\times {{10}^{5}}\xrightarrow{70\,\min }4\times {{10}^{5}}\]
                \[\xrightarrow{105\,\text{min}}8\times {{10}^{5}}\xrightarrow{140\,\min }16\times {{10}^{5}}\]\[\xrightarrow{175\,\text{min}}32\times {{10}^{5}}\]


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