Plant and animal cells. Cytoplasm. Jelly-like substance, where chemical reactions happen. In plant cells there's a thin lining, whereas in animal cells most of the cell is cytoplasm. Plant and animal cells. Nucleus. Controls what happens inside the cell.Carries genetic information. In exams don't call the nucleus the 'brain' of the cell.ytoplasm. Jelly-like substance, where chemical reactions happen. In plant cells there's a thin lining, whereas in animal cells most of the cell is cytoplasm. Plant and animal cells. Nucleus. Controls what happens inside the cell. Carries genetic information. In exams don't call the nucleus the 'brain' of the cell.
Iron is rarely found in its pure form on the surface of the earth; as it tends to get oxidized when it comes in contact with atmospheric oxygen. For this reason, most of its ores are in the form of iron oxides.
There are two forms of iron that exist in the world. One is a magnetic metal which is silver-white in color and is commonly used in construction and for tools and armaments. Often found as a compound with other rocks known as ore it is used as alloy with other metals to create various different everyday items.The other is a mineral that is needed to help red blood cells deliver oxygen to our bodies. The mineral of iron comes in two forms haem and non-haem.t comes in two different forms heme and non-haem. Haem iron is found in animal products such as oysters, meat, poultry and fish. Non-haem iron is found in fruits and vegetables particularly dried fruits, molasses, and leafy green vegetables such as spinach and of course in iron supplements.