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IGCSE O Level Biology MCQs (O Level) From Textbook

IGCSE O Level Biology Entrance Exam MCQs – Mock Test 125

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O Level Biology Quiz – Mock Test 125 PDF Download

MCQ 621: Blue black color is produced when substance containing starch is mixed with:

  1. Biuret solution
  2. benedict solution
  3. iodine
  4. alcohol

MCQ 622: When the growth of fungal cells slows down in culture medium:

  1. carbon dioxide is given off
  2. carbon monoxide is given off
  3. fungal cells excrete penicillin
  4. the process is stopped

MCQ 623: Response to external environment that is beneficial to the organism is termed as:

  1. sensitivity
  2. stability
  3. sustenance
  4. similarity

MCQ 624: Tissue cells like cartilage may not have a direct contact with:

  1. blood arteries
  2. blood veins
  3. tissue fluid
  4. blood capillaries

MCQ 625: To form cheese, a mixture of bacteria and fungi act upon:

  1. fermented milk sugar
  2. lactic acid
  3. fats
  4. all of above

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