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O Level Biology Questions MCQs Quiz Online Tests pdf Download

Practice MCQs on o level biology questions, biology MCQs for online test prep. Effects of human activity on ecosystem quiz has multiple choice questions (MCQ), o level biology questions quiz questions and answers as desertification is caused due to, answer key with choices as overgrazing, topsoil is eroded, rapid water evaporation from soil and all of these for competitive exam prep. Free study guide is to learn o level biology questions quiz online with MCQs to practice test questions with answers.

MCQs on O Level Biology Questions Quiz pdf Download

MCQ. Desertification is caused due to

  1. overgrazing
  2. topsoil is eroded
  3. rapid water evaporation from soil
  4. all of these

D

MCQ. Breakage of hydrogen bonds in protein coils results in

  1. activation of enzymes
  2. denaturation of proteins
  3. expedites digestive system
  4. inactivation of protein molecules

B

MCQ. Dietary imbalances cause

  1. malnutrition
  2. starvation
  3. eating only proteins
  4. high cholesterol

A

MCQ. Advantages of seed dispersal includes

  1. less spread of disease
  2. plants colonizing new habitats
  3. prevention of overcrowding of plants in same habitat
  4. all of these

D

MCQ. Starch (C6H10O5)n is digested to form maltose (C12H22O11) through enzyme

  1. maltase
  2. amylase
  3. diastase
  4. sucrose

C


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