MACROMOLECULES Macromolecules are giant molecules with many atoms and very large masses for a molecule. Cells can combine small organic molecules into large macromolecules, forming a higher level in the biological hierarchy. Carbohydrates, lipids, proteins and nucleic acids are the four major classes of organic compounds in cells. Nearly all macromolecules include the element carbon as a building block, because it is the only ... produced by green plants and by bacteria using the process known as photosynthesis, in which carbon dioxide is taken from the air by means of solar energy to yield ...

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... body and understanding how they behave should help researchers figure out how to treat most illnesses. However, cells not only consist of genes and proteins, but also of carbohydrates (sugars) and lipids (fats). Carbohydrates, which were once regarded as energy-yielding molecules, are now known to combine with the cell surfaces and influence cell-to-cell communication, the immune system, the ... by excess inflammation. After wounding or infection, endothelial cells that line blood vessels begin to display large numbers of carbohydrate-binding proteins called selectins. Selectins bind loos...

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... components, and cell-to-cell contacts and recognition. The basic unit or monomer for carbohydrate is monosaccharide or simple sugars. An example of monosaccharide would be glucose, fructose, and galactose. Carbohydrates are composed of thousands of monomers are called polysaccharides. Some examples of polysaccharides would be starch, cellulose, and glycogen. Lipids store energy, protect and cushion body organs, are structural components ... ...

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... those which provide the membrane itself. They include; the cell (plasma) membrane, the cytoplasm, and the cytoskeleton. The cell (plasma) membrane is made up a phospholipid bi-layer, protein, cholesterol and carbohydrates. It serves many purposes, it is the edge of the cell, it is also the site for chemical activity, and last it separates the living environment. The cytoplasm is the ... it is the sole location. The golgi apparatus constructed of a many flattened membrane sacks connected to both the smooth and rough endoplasmic recticulum. The golgi apparatus receives products of ER; car...

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... fungi: chitin. This supports prokaryotes as the more advanced of the two cells in question. The plasma membrane contains sterols and carbohydrates which serve as receptors in the eukaryotic cell. In the prokaryotic cell however, the plasma membrane lacks carbohydrates and sterols. This would indicate the eukaryotic cell as the more complex and developed. Cellular respiration takes place in the cell membrane ... ...

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... the RNA polymerase to bind to a specific site based on the environment. Polypeptide are enzymes which go on to act like the assembly machinery, breaking down and building and combining carbohydrates, lipids and proteins that make up variations of cell material. In the nucleus, DNA is transcribed onto an RNA molecule which is called a transcription unit. Each unit has a sequence just ... ...

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... life sustaining products e.g. extracting fruit juices, retarding staling of baked products, starch processing and analytical methodology. Important applications include the hydrolysis of specific types of chemical bonds like lactose and carbohydrates associated with prepping syrups. Enzymes in fresh foods brings foods to the peak of perfection, e.g. during ripening, but can cause impairment when work continues beyond perfection. Changes in flavour, colour ... ...

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... are arranged in the DNA. It is important that DNA and RNA control protein synthesis. Proteins control both the cell's movement and it's structure. Proteins also direct production of lipids, carbohydrates, and nucleotides. DNA and RNA do not actually produce these proteins, but tell the cell what to make. (Heath, 111-113) For a cell to build a protein according to the DNA ... ...

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... join together to form the building blocks of all life, DNA (deoxyribonucleic acid). Organic compounds constitute various substances in the body, which are vital for life to be sustained. Proteins, carbohydrates, and lipids are organic compounds that contribute to the structure of the human body. Organic compounds also make up enzymes and catalysts that are mandatory for essential biological processes to ... ...

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