Anabolic reactions involve building up larger molecules from smaller ones. An example of this type of reaction is when a nucleotide is added onto a strand of dna-the strand of DNA is lenghtened.
A second type of reaction are classed as "catabolic reactions". These occour when a large molecule is broken down into many smaller molecules. A example of a catabolic reaction is catalysed by the enzyme beta-lactosidase, a digestive enzyme which breaks down lactose into galactose and glucose.
A third type of reaction are classed as isomerisations. In these reactions a molecule is neither built up, or broken down, but has its atoms re-arranged into a different conformation.
2006-09-20 09:10:07
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answer #1
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answered by theBoyLakin 3
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Ok very simply an anabolic reaction is a reaction that builds up larger molecules. They usually require energy. The opposite are catabolic reactions they break down molecules into smaller molecules often to release energy as part of metabolism.
2006-09-21 09:15:54
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answer #2
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answered by Ellie 4
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anabolic reactions build up (biosynthesize) new molecules. When chemical bonds are broken, energy is released, which drives anabolic reactions to form new bonds. The energy released generally has been stored in high-energy bonds of an intermediate energy carrier molecule, such as the terminal phosphate bond of adenosine triphosphate (ATP). (When the terminal phosphate is split from the ATP molecule, adenosine diphosphate, or ADP, is formed and inorganic phosphate is released, along with energy.) The simpler metabolites formed via catabolic reactions are often the building-block metabolites used in anabolic reactions to synthesize more complex molecules (e.g., starch, proteins, or lipids).
2006-09-20 16:46:02
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answer #3
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answered by Britannica Knowledge 3
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OMG! I just had a test on this!!! Okay:
Anabolic reactions build bigger molecules. They're kinda like synthesis reactions. They also require energy.
An important type of anabolic reaction is called:
dehydration synthesis, which is used by cells for the synthesis of carbohydrates, proteins, and triglycerides. Also, in this kind of reaction, water is formed.
Here are some examples of dehydration synthesis reactions:
monosaccharide + monosaccharide + monosaccharide --> carbohydrate + water
amino acid + amino acid + amino acid + amino acid --> protein + water
3 fatty acids + glycerol --> triglyceride + water
2006-09-20 16:23:20
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answer #4
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answered by Anonymous
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Anabolic reactions use up energy. They are endergonic.
2006-09-21 04:35:41
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answer #5
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answered by zanzabarr 2
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I changes in oxygen (air). It oxidises.
2006-09-20 15:58:42
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answer #6
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answered by tucksie 6
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