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IGCSE O Level Biology MCQs (O Level) From Textbook

IGCSE O Level Biology MCQs – Mock Test 57

GCSE Biology Quiz with Answers PDF Download – Test 57

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Free GCSE Biology Quiz App Download: "One of the most common essential component of many co-enzymes is"; MCQ with answers: vitamin k, vitamin d12, vitamin b complex, and vitamin e. Learn What Are Enzymes Questions and Answers, Apple iBook to download free chapter for biology academic portals.

GCSE Biology Quiz – Mock Test 57 PDF Download

MCQ 281: One of the most common essential component of many co-enzymes is:

  1. vitamin D12
  2. vitamin K
  3. vitamin E
  4. vitamin B complex

MCQ 282: Over-breathing can be countered through:

  1. in breath longer than out breath
  2. out breath longer than in breath
  3. excessive breathing
  4. holding breath

MCQ 283: Postum is a replacement of:

  1. nicotine
  2. caffeine
  3. alcohol
  4. penicillin

MCQ 284: If male and female flowers are born on different plants, the plant is called:

  1. bisexual
  2. dioecious
  3. unisexual
  4. trisexual

MCQ 285: Energy reserves are normally stored as:

  1. glycogen
  2. simple sugars
  3. complex sugars
  4. sucrose

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GCSE Biology Quiz App

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O Level Biology Quiz App

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10th Grade Biology Quiz App

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9th Grade Biology Quiz App