Test on the elements necessary for life.
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| How many groups are there? | 3 | |
| What is the first group? | Major Elements | |
| What is the second group? | Macro Molecules | |
| What is the third group? | Trace Elements | |
| How many elements are essential to life? | 25 | |
| What are the members of the Major Elements group? | Carbon (C), Hydrogen (H), Oxygen (O), Nitrogen (N) | |
| What are the members of the Macro Molecules group? | Sodium (Na), Phosphorus (P), Magnesium (Mg), Sulpher (S), Calcium (Ca), Chlorine (Cl) | |
| What are the members of the Trace Elements Group? | Nickle, Copper, Iron, Iodine, Fluorine, Arsenic, Silicon, Selenium, Manganese | |
| Most minerals have their _____ _____ in them. | Trace Elements | |
| What does a lack of ioding cause in the body? | A goitre (swollen thyroid gland) | |
| What is the function of Chlorine in the body? | It is a constituent of Hydrochloric Acid in gastric juice in the stomach and assists in the transmition of nerve impulses. | |
| What is the function of Fluorine in the body? | It is a componenet of tooth enamel and bones. It is important in preventing dental cavities. | |
| What is the function of Iodine in the body? | It is required for the normal functioning of the thyroid gland. | |
| What is the function of Iron in the body? | It is a constituent of haemoglobin (the oxygen carrying pigment in the blood) | |
| What is the function of Calcium in the body? | Aids in the formation of strong bones and teeth. | |
| What is the function of Copper in the body? | Assists enzymes in respiration. | |
| What is the function of Magnesium in the body? | Aids in the formation of strong bones and teeth. | |
| What is the function of Potassium and Sodium in the body? | They assist in the transmition of nerve impulses. |
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