BIOLOGY

Reviewed by GL

Cofactor: [|inorganic] [|complement] of an [|enzyme]  [|reaction], usually a [|metal]  [|ions]. [] Enzyme: A [|protein] (or protein-based molecule) that speeds up a chemical reaction in a living organism. An enzyme acts as [|catalyst] for specific [|chemical reactions], converting a specific set of reactants (called substrates) into specific products. Without enzymes, life as we know it would not exist. [] Properties: Temperature, above a certain point (optimum temperature) causes them to break down and they are gradually destroyed (denaturing). Examples: [] Rybozime:  are [|molecule] s of [|RNA]  that function like [|enzymes] , that is, they have an [|active site]  and increase the rate of specific chemical reactions. Examples: -Mammalian CPEB3 ribozyme -VS ribozyme Vitamin: A vitamin is an [|organic compound] required as a [|nutrient] i n tiny amounts by an  [|organism]. Examples: -Vitamin A -Vitamin B  -Vitamin C
 * starch (+ water) maltose
 * maltose (+ water) glucose + glucose
 * sucrose (+ water) glucose + fructose

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They are researchers who investigated about the theory of spontaneous generation.
 * Who are aristoteles,Spallanzani,Francesco Redi and Louis Pasteur?

Aristoteles:He propose the theory of spontaneus generation. Redi and Spallanzani: They were the first to be against to the theory. Pasteur: He did the last experiment proving that the theory was false. Finally the idea of the theory of spontaneous generation was deleted from the scientific mind.

www.wikipedia.com www.rincondelvago.com/origen-de-la-vida_l.html**

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 * Which are the parts of the cell membrane?**