catalyst


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Clarissa Nava 3H
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catalyst

Postby Clarissa Nava 3H » Sun Mar 17, 2019 12:05 am

why is an enzymes a catalyst ?

MariahClark 2F
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Re: catalyst

Postby MariahClark 2F » Sun Mar 17, 2019 12:07 am

Enzymes are proteins functioning as catalysts that speed up reactions by lowering the activation energy. A simple and succinct definition of an enzyme is that it is a biological catalyst that accelerates a chemical reaction without altering its equilibrium.

Bella Townsend
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Re: catalyst

Postby Bella Townsend » Tue Mar 17, 2020 10:17 pm

One of the key features of an enzyme which is used as a catalyst is that it is not used up in the reaction. Therefore, it is not in the overall reaction.

Riya Sood 4G
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Re: catalyst

Postby Riya Sood 4G » Tue Mar 17, 2020 10:35 pm

Enzymes provide an alternative pathway for the reaction to occur faster. They lower the activation energy, but the change in Enthalpy and Gibbs free energy stays the same because they are state properties independent of the pathway.

Tauhid Islam- 1H
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Re: catalyst

Postby Tauhid Islam- 1H » Tue Mar 17, 2020 10:55 pm

Enzymes are just biological catalysts. They are able to lower the activation energy for reactions, the lower the activation energy, the faster the rate. The enzymes speed up the reactions by lowering the activation energy.

Jeremy_Guiman2E
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Re: catalyst

Postby Jeremy_Guiman2E » Wed Mar 18, 2020 12:31 am

Enzymes are catalysts because they are not consumed in reactions but can accelerate reactions by lowering activation energies.

Susan Chamling 1F
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Re: catalyst

Postby Susan Chamling 1F » Mon Feb 22, 2021 8:10 pm

Enzymes are a type of catalyst, which decreases a reaction's activation energy so that the reaction is able to occur at a faster rate.

jia207
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Re: catalyst

Postby jia207 » Tue Feb 23, 2021 1:15 pm

A catalyst works by decreasing a reactions activation energy so the reaction can take place at a quicker rate. Enzymes are an example of a catalyst. However, not all enzymes speed up reactions, some inhibit/slow down reactions.

SamayaJoshi1A
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Re: catalyst

Postby SamayaJoshi1A » Tue Feb 23, 2021 2:46 pm

How do catalysts affect activation energy?

Madison Wong 3H
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Re: catalyst

Postby Madison Wong 3H » Tue Feb 23, 2021 2:51 pm

Catalysts and enzymes work by decreasing the activation energy by lowering the free energy of the transition state. Thus, the reaction has smaller required activation energy and progresses faster.

Kayle Lim 2C
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Joined: Wed Feb 19, 2020 12:16 am

Re: catalyst

Postby Kayle Lim 2C » Wed Mar 03, 2021 10:31 pm

Enzymes function as catalysts through their ability to speed up and increasing rates of reactions. Enzymes are really important to study and learn about because of how they are able to function without altering chemical equilibrium or being consumed. They are used as a great resource to speed up processes and reactions in chemistry.

Marc Lubman 3B
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Re: catalyst

Postby Marc Lubman 3B » Sat Mar 06, 2021 8:02 pm

It's also worth mentioning that enzymes are not just catalytic proteins. They can actually also be made from RNA strands, which are known as ribozymes, and also allow certain biological reactions in the cell to occur.

Austin Aldujaili 2D
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Re: catalyst

Postby Austin Aldujaili 2D » Sat Mar 06, 2021 8:11 pm

An enzyme is not involved in the chemical reaction and instead just brings down its activation energy. For zero order rxns, all of the enzymes can be saturated (used up) in a reaction that adding more reactant actually doesn't change the rate of the rxn.

Aayushi Jani 3A
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Re: catalyst

Postby Aayushi Jani 3A » Wed Mar 10, 2021 10:08 am

Enzymes are a kind of catalyst that lower the activation energy for a reaction, which lowers their energy barrier, allowing for the reaction rate to increase.

Vanshika Bhushan 1A
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Re: catalyst

Postby Vanshika Bhushan 1A » Wed Mar 10, 2021 5:54 pm

Enzymes act as catalysts. They do not get consumed in the chemical reactions that they accelerate. They speed up reactions by lowering the activation energy.

Emma_Barrall_3J
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Re: catalyst

Postby Emma_Barrall_3J » Wed Mar 10, 2021 5:55 pm

Enzymes act as biological catalysts by lowering the activation energy of whatever reaction they are involved in.

Taylor Newville 1C
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Re: catalyst

Postby Taylor Newville 1C » Wed Mar 10, 2021 6:24 pm

Catalysts speed up a reaction (increase k) by lowering the activation energy. An enzyme is a biological catalyst because it speeds up a chemical reaction without changing the reaction or its components.

Jacob Schwarz-Discussion 3I
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Re: catalyst

Postby Jacob Schwarz-Discussion 3I » Sat Mar 13, 2021 10:40 pm

Enzymes also function as catalysts because they also lower the activation energy of a reaction

Ashley Wagner 2A
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Re: catalyst

Postby Ashley Wagner 2A » Sat Mar 13, 2021 10:42 pm

Enzymes are catalyst because they lower the activation energy in the reaction they are a part of. Furthermore, they accelerate the reaction rate.

Anthony_Sandoval_1D
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Re: catalyst

Postby Anthony_Sandoval_1D » Sun Mar 14, 2021 8:55 pm

Enzymes act as a catalyst by lowering the activation energy of a reaction. This allows the reaction to take place at a faster rate.

Moura Girgis 1F
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Re: catalyst

Postby Moura Girgis 1F » Sun Mar 14, 2021 9:38 pm

SamayaJoshi1A wrote:How do catalysts affect activation energy?

Catalysts lower activation energy so the reaction occurs at a faster rate.

Brandon Gruender 3F
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Re: catalyst

Postby Brandon Gruender 3F » Sun Mar 14, 2021 9:40 pm

enzymes are catalysts because they lower the activation energy for a reaction, but aren't used up in the reaction

Taha 2D
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Joined: Wed Sep 30, 2020 9:50 pm

Re: catalyst

Postby Taha 2D » Sun Mar 14, 2021 9:42 pm

they are biological catalyst because they lower activation energy and allow reactions to happen at body temp withouth getting used up

andreagutierrez 3K
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Re: catalyst

Postby andreagutierrez 3K » Sat Mar 12, 2022 3:39 pm

Enzymes are catalyst because they also lower their activation energy.


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