Here are 15 biology questions that can be a true challenge. Answers could surprise you

Biology questions
Biology questions

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a d v e r t i s e m e n t

Biology questions. Advice to the novice: about 70% fail in question Nº 7. Yet learning can be such fun! Average? 11/15. Can you overcome that? You won’t know if you don’t try.


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Here are 15 biology questions that can be a true challenge. Answers could surprise you

  • On human body… Which of these organs can work both as an endocrine and exocrine gland?

    • Thymus
    • Pancreas
    • Thyroid
    • Hypothalamus
  • What part of the human body has more than a quarter of all bones?

    • Head
    • Legs
    • Hands
    • Chest
  • A harder one… Which structure is found in plant cells and not in animal cells?

    • Plasma membrane
    • Cell wall
    • Nucleus
    • Centriole
  • In what type of symbiosis one of the organisms benefits greatly from the other, while the other is simply not damaged by the relationship?

    • Parasitism
    • Mutualism
    • Ectosymbiosis
    • Commensalism
  • Which is the fastest muscle in human body?

    • Tongue muscles
    • Hands muscles
    • Arm muscles
    • Eyes muscles
  • Another easy one… Marine biology can be defined as the scientific study of organisms living in:

    • The soil
    • The sea
    • The air
    • The river
  • What organ is used by worms to breathe?

    • The skin
    • The gills
    • The lungs
    • The mouth
  • What is the basic structural and functional unit of life?

    • Skin
    • DNA
    • Cells
    • Carbon molecules
  • What organ system in human body does the heart belong to?

    • Endocrine system
    • Digestive system
    • Nervous system
    • Cardiovascular system
  • What is the Earth’s living structure so large that can be seen from space?

    • The Great Barrier Reef (Australia)
    • The Amazon Forest (South America)
    • The Sargasso Sea (Atlantic Ocean)
    • The Great Wall (China)
  • About dangerous species… Which animal’s sting can cause pancreatitis in humans?

    • Rattle snakes
    • Bees
    • Jellyfish
    • Scorpions
  • What plant species is the fastest growing in the world?

    • Bamboo
    • Banana trees
    • Giant water lily
    • Passion fruit
  • Historical facts to remember… Edward Jenner developed a vaccine in 1796 for what disease?

    • Diphtheria
    • Meningitis
    • Smallpox
    • Poliomyelitis
  • Dogs and humans have developed an example of symbiosis over millennia. Which one?

    • Endosymbiosis
    • Mutualism
    • Commensalism
    • Parasitism
  • What is the term that best describes a level of organization containing only one species?

    • Population
    • Bioma
    • Community
    • Ecosystem

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Ricardo Gondelles

Written by Ricardo Gondelles

Thirty years of experience in journalism and the publishing world is easily said. Yet, I feel so open to learning that I like to imagine what comes for the next 30 years. As a writer, editor and proofreader, my passion for the written word keep me discovering new realms. Bilingual (Spanish-English), I’m a language lover who’s going through French and Italian as well (I don’t know what comes next, Russian?). My goal in life is to have things done as best as I can, and I take pride in it. Contact me.

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