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A catalyst speeds up a chemical reaction but does not take part in the reaction. An enzyme is a biological catalyst. Many enzymes are found embedded in cell membranes in (rough endoplasmic reticulum for example) or facing outside the cell in the cell membrane. They are basically biologic catalysts and are different because they can and have evolved, can be much more specific about what reactions they catalyze, and can be controlled by the cell to meet its metabolic needs.

2006-07-18 07:31:03 · answer #1 · answered by The Mog 3 · 0 0

Enzymes float in solution in a cell, so they are really diffused all over the cell fluid. Just-recently manufactured enzymes would be in the rough endoplasmic reticulum, since the ribosomes like to hang out there. An enzyme is a catalyst, but catalzsts aren't necessarily enzymes. A catalyst is any kind of chemical that speeds up a chemical reation. An enzyme has to be a biological protein.

2006-07-18 10:12:01 · answer #2 · answered by Chx 2 · 0 0

An enzyme can be anywhere within a cell, or outside of a cell. In real terms an enzyme (or catalyst) lowers the energy of activation of a chemical reaction. An enzyme is simply a protein that lowers the energy of activation for a certain reaction. Enabling the reaction to occur with less energy put into the reaction. Some enzymes such as kinesin or myosin use the hydrolysis of ATP to perform physical work. But others drive specific chemical reactions that involve metabolism, etc.

A catalyst can be an organic or inorganic compound that lowers the energy of activation for a specific reaction, but it is not a polypeptide.

2006-07-18 07:37:24 · answer #3 · answered by bunja2 3 · 0 0

A catalyst is a substance that modifies and increases the rate of a chemical reaction without being consumed in the process. Cells produce enzymes. An enzyme is a protien produced by a cell. Catalysts can be used to produce specific enzymes or visa versa enzymes can act as catalysts.

2006-07-18 07:22:28 · answer #4 · answered by Knock Knock 4 · 0 0

Enzymes are located throughout a cell. Cell membrane, cytoplasm, organelles, etc. The difference between an enzyme and a catalyst is a little trickier. Enzymes help to catalyze reactions ie, lactase cleaves lactose into two sugar molecules(its been a while, not sure if both are glucose) A catalyst doesn't need to be a protein/enzyme it simply is something/anything that allows/helps a particular reaction proceed. ie. the platinum(?) in a catalytic convertor(in a car) helps to break down hydrocarbons(unburned gasoline). reduces them.. to methane i believe. sorry about the specifics...

2006-07-18 07:28:45 · answer #5 · answered by toq76 2 · 0 0

enzymes can be found anywhere. anywhere in a cell or anywhere outside of a cell. enzymes are usually used to change proteins. they can bend and twist proteins to make them viable for other processes. a catalyst is anything that helps a chemical reaction. catalysts can be a single element or a huge hydrocarbon. enzymes can act as catalysts, but catalyst is a vague term that can apply to so many things.

2006-07-18 07:21:03 · answer #6 · answered by giggssoccer83 3 · 0 0

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