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IGCSE O Level Biology MCQs (O Level) From Textbook

IGCSE O Level Biology MCQs – Mock Test 48

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MCQ 236: Breathing mechanism include:

  1. internal respiration
  2. external respiration
  3. expiration
  4. transportation

MCQ 237: Overall control of all voluntary action is gained through:

  1. medulla oblongata
  2. Cerebral hemisphere
  3. cerebellum
  4. pituitary gland

MCQ 238: Ulcers can be diagnosed through:

  1. x-rays
  2. endoscopy
  3. ultrasounds
  4. biosensors

MCQ 239: In spinal cord, the grey matter:

  1. surrounded by white matter
  2. surrounds the white matter
  3. does not exist
  4. forms nerves

MCQ 240: In each villus, the sugars and amino acids are diffused in:

  1. lymphatic capillary
  2. blood vessels
  3. microvilli
  4. large intestines

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