The elements essential to human life
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The periodic table currently holds 118 elements. Test your knowledge of which ones humans can’t live without and what roles those elements play in the body with this test.
Quiz:
01
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Which of these elements makes up the greatest percentage of the average human body by mass?
Carbon
Nitrogen
Hydrogen
Oxygen
Selenium
Phospohorus
Sulfur
02
Which of the following elements is not found in any of the 20 essential amino acids that our bodies use to make proteins?
Calcium
Copper
Chlorine
Sodium
03
Which of the following elements has key roles in fluid balance and normal nerve and muscle function?
Molybdenum
Magnesium
Zinc
04
Which of the following elements does not have an important role in our immune system?
Iron
Iodine
Potassium
05
Which of the following elements is found in our blood and helps carry oxygen from the lungs to our bodies’ cells?
Cobalt
Manganese
06
Which of the following metals is found in vitamin B-12, which is essential for making red blood cells?
Spongier bones that break more easily
Muscle cramping and weakness
Irregular heart rhythms
Inability to make white blood cells
07
Which of the following is an effect of manganese deficiency in the body?
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The periodic table rules! . . . life as we know it.
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