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The Hardest Quiz About Your Body You Will Ever Take

Unless you're studying it at degree level, of course. Based on test questions from A-Level Human Biology.

Ready? Let's go.

Samuel Goldwyn Films / Via classicmovieactorss.tumblr.com
  1. 1. How many bones does an adult human have?

    Correct! 
    Wrong! 

    We start out with over 300 bones, but as we grow up some fuse together and we end up with 206.

  2. 2. How does haemoglobin transport oxygen?

    OCR / ocr.org.uk
    Correct! 
    Wrong! 

    And it's happening in your blood RIGHT NOW.

  3. 3. How many oxygen molecules can one haemoglobin molecule carry?

  4. 4. Which part of your brain regulates sleep?

    Correct! 
    Wrong! 

    Here's a handy song that will help you remember what it does.

  5. 5. Complete the sentence: "A water molecule has an uneven distribution of charge, so it is said to be ____."

    Correct! 
    Wrong! 

    Bodily fluids contain water because it's an ideal transport medium.

  6. 6. Which of these is an electrolyte found in blood plasma?

    Correct! 
    Wrong! 

    Globulins are proteins in the blood.

  7. 7. A vein is made up of different tissues. What sort of tissue is labelled "a" on the below diagram?

    Correct! 
    Wrong! 

    The endothelium is a thin layer of cells on the inside of veins and arteries.

  8. 8. In the above diagram, what does the part labelled "b" do?

    Correct! 
    Wrong! 

    It's a valve.

  9. 9. In the above diagram, what sort of fibres are "c"?

    Correct! 
    Wrong! 

    There are elastic fibres in a vein, but they're the layer above the endothelium.

  10. 10. Which of these is a base pair?

    Correct! 
    Wrong! 

    Adenine pairs with thymine, and cytosine pairs with guanine.

  11. 11. What's the name of the space inside a tubular structure, like a vein or bronchiole?

    Correct! 
    Wrong! 

    It's lumen. The serosa is a fluid-secreting membrane that covers some of your organs.

  12. 12. Which of these happens in the lungs when someone has an asthma attack?

    Correct! 
    Wrong! 

    The muscles in the bronchioles actually contract, restricting the amount of air that can pass through bronchioles in the lungs.

  13. 13. The simplified diagram below shows meiosis, during which cells divide to form gametes. What type of cell is labelled "a"?

    OCR / ocr.org.uk
    Correct! 
    Wrong! 

    Diploid cells have the full number of chromosomes. Gametes are haploid cells, and they have half the number of chromosomes as usual.

  14. 14. Which molecule sits on the inner membrane of mitochondria?

    Correct! 
    Wrong! 

    FAD (flavin adenine dinucleotide) molecules live in mitochondria, but they're in the matrix.

  15. 15. Nerve impulses are caused by the change in concentration of what?

  16. 16. What does the Golgi apparatus in your cells do?

    Correct! 
    Wrong! 

    It's the largest organelle and was one of the first to be discovered. It's present in eucaryotic cells.

  17. 17. Which of these does NOT apply to energy-storing molecule glycogen?

    Correct! 
    Wrong! 

    Glycogen is a polysaccaride of glucose. It provides long-term energy storage and is stored mostly in your liver and muscles. A hexose sugar is a monosaccharide with just six carbon atoms.

  18. 18. How many neurons are there in the average brain?

    Correct! 
    Wrong! 

    It's 86 billion. So many.

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