Class 9 Biology MCQs (Grade 9) From Textbook

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Class 9 Biology Exam Prep: Certification Test 1505

Human Food Components Learning App & e-Book: MCQ 1505

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MCQ: 1505

The mineral which acts as a cofactor for other enzymes is

  1. iron
  2. ethane
  3. methane
  4. potassium

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Human Food Components Exam Prep: Class 9 Biology App & eBook Notes

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