A cell is the smallest unit of life, also called the 'building blocks of life' because cells multiply and differentiate to form a multicellular organism as well as give rise to new organism by forming gametes or reproductive spores. A living thing, whether made of one cell (like bacteria) or many cells (like a human), is called an organism. Thus, cells are the basic building blocks of all organisms. Several systems that function together form an organism (like a human being).
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Iron wood is very dense and will sink in water. B
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B) Ionic bonds are formed when one atom takes another atom's electrons, while covalent bonds are formed when two atoms share electrons.
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A rock is a naturally occurring solid mixture of one or more minerals or organic matter.
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A mineral is naturally formed, inorganic, solid, with a fixed chemical composition, and crystalline structure. A rock at the surface of the Earth would need to be weathered down into sediments.
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Enzymes are proteins and speed up chemical reactions, i.e. are catalysts.
Fats are lipids and store energy.
Sugars are carbohydrates and also store energy.
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