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IGCSE O Level Biology Certification Exam Tests

IGCSE O Level Biology Practice Test 105

GCE Biology Quiz Questions and Answers PDF Download - 105

The GCE Biology Quiz Questions and Answers PDF (GCE Biology Quiz with Answers PDF e-Book) download Ch. 19-105 to prepare IGCSE O Level Biology Practice Tests. Solve What Are Enzymes MCQ with answers PDF, GCE Biology Multiple Choice Questions (MCQ Quiz) for online associates degree. The GCE Biology Quiz App Download: Free learning app for gce biology, parasitism: malarial pathogen, atmospheric pollution, wind dispersed fruits and seeds, thyroxin function test prep for best SAT prep courses online.

The Quiz MCQ: Enzymes are largely composed of; "GCE Biology" App Download (Free) with answers: Carbohydrates; Fat; Proteins; Minerals; for online associates degree. Learn What Are Enzymes Questions and Answers, Apple eBook to download free sample for online certificate programs.

GCE Biology Questions and Answers PDF Download: MCQ 105

MCQ 521:

Enzymes are largely composed of

  1. fat
  2. carbohydrates
  3. proteins
  4. minerals
MCQ 522:

Larvae breath through the help of

  1. feeding brushes
  2. pair of air floats
  3. pair of spiracles
  4. pair of gills
MCQ 523:

Profuse growth of algae occurs due to

  1. hydrogen sulphide in water
  2. nitrates and phosphates in water
  3. carbon dioxide in water
  4. chlorine in water
MCQ 524:

Small size and light weight ensures

  1. proper seed dispersal
  2. seed dispersal through wind
  3. seed dispersal through water
  4. seed dispersal through insects
MCQ 525:

Apart from other reasons, excess thyroxin may cause

  1. myxedema
  2. heart attack
  3. meningitis
  4. obesity

IGCSE O Level Biology Exam Prep Tests

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GCE Biology App (Android & iOS)

GCE Biology App (Android & iOS)

O Level Biology App (Android & iOS)

O Level Biology App (iOS & Android)

Zoology App (Android & iOS)

Zoology App (Android & iOS)

Cell Biology App (Android & iOS)

Cell Biology App (iOS & Android)