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Catalysts and Catalysis

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Parent Category: Chemistry
Catalysts are compounds or elements which take part in a reaction without getting used up themselves.
Everyone, from birth and even before, produces enzymes that allow us to digest and metabolyze and to perform the basic, chemical level activities that are needed for life.The question you MIGHT have been wanting to ask is, "what age group has active HORMONES?" Typically, sex hormones start to become…
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Bad Stuff Enzymes are denatured (their shape is changed so it doesn't work) when boiled Answer: enzymes whose optimum pH and temperature is well below the boiling point ( of water?) will be denatured and there are a few enzymes which works best at the higher temperature and hence does not get d…
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A Catalyst provides an alternate and less complicated pathway or route for reactants to form products in a reaction. An effect of a catalyst is the speeding up or slowing down of the rate of a chemical reaction. It should not be confused with Promoter, which increases the efficiency of a catalyst.
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In a general sense, a catalyst is able to lower the activation energy required for a reaction and lower the time required to reach the transition state of the reactants. The catalyst is also not consumed during the reaction, so it can be used repeatedly.
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A catalyst is a substance that makes chemical reactions happen faster. They don't affect the outcome of the reaction, only the time in which it happens.
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Pespin
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There is a near-infinite list of what might effect reaction rates. Major, common factors are Temperature, Pressure, Solvent Concentration, Solute Concentration, Sterics, Size (Surface area) Catalysts, Concentration and light . The rate of reaction is determined by the Activation Energy (Ea, Delta G…
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In Biology, a catalyst is a substance which speeds up a chemical reaction, without being changed themselves. Biological catalysts are found in living organisms.
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A catalyst actually decreases the activation energy of a reaction in 2 ways: 1) By a process called adsorption, it attracts the molecules of the reactants to its surface so that they are closer together and can react more easily by colliding more successfully. 2) It creates a transition state, whi…
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The enzynamtic pathway is made of Enzymes are biological catalysts which break down large molecules into smaller ones, so that they can be absorbed into the blood stream and thus digested. they act like chemical scissors snipping large insoluble food molecules into smaller soluble products. Enzymes …
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Protease is a protein-degrading enzyme produced in the pancreas.
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Light can affect the rate of a reaction by altering the speed of the reaction. The more light there is, the faster the reaction takes place.
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Enzymes Enzymes are biological catalysts, mainly proteins, generated by an organism to speed up chemical reactions. They have an active site on which the substrate is attached, and then broken up or joined. Contrary to the generally accepted belief, an enzyme is not necessarily a protein molecule (…
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Speed up the rate of a chemical reaction
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Enzymes are named by the reaction it catalyzes.
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Most, but not all Prior to 1967, the assumption was that all biological catalysts were proteins. But an investigation into RNA splicing showed that there was no protein involved in cutting introns out of hnRNA (pre-RNA). In fact, the molecule responsible for breaking the phosphodiester bonds was snR…
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Chemical kinetics has many application.some of them are;. used as manufactuer of medicine,. used as synthesis of organic and inorganic compounds.
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Replace it with a new one.
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The SSRIs can be both CYP450 enzyme inhibitors AND inducers. Inhibitors inhibit the metabolism of drugs, causing the body to have increased levels of that drug. Inducers speed of the metabolism of a drug, causing the body to inactivate/eliminate to a further extent than it normally would. It depends…
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A catalyst is a substance which speeds up the rate of reaction. After the reaction it remain chemically unchanged. It does NOT affect the position of equilibrium. There can also be negative or "poisoned" catalysts as in Rosenmunds reaction.
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Enzymes are made from amino acids. They are a class of proteins.
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Enzymes are biological catalysts that speed up chemical reactions. Each enzyme has a unique shape that determines its function. They do this by breaking down bonds and reforming new ones.
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The function of a catalyst is to speed up the rate of a reaction. The factors that affect how a catalyst works include temperature, nature of the substrate and pH.
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They react with substrates. The enzymes turn the substrates into the needed molecule.
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No, bile contains no enzymes
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Enzymes are very important because they speed up the chemical reactions that are required for life. Enzymes are organic catalysts and they facilitate the chemical reaction in human body like digestion and respiration.They maintain the homeostasis in human body.
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Enzymes are made up of proteins. At a high temperature, the polypeptide chains of the enzyme are unfolded hence it loses its specific 3D configuration and active site, and is denatured.
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enzymes hydrolyze the macromolecules in food into small, soluble molecules that can be absorbed into cells. pepsin hydrolyze proteins and amylase hydrolyze starch
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Answer So there are enzymes and there are substrates. Enzymes dissolves substrates. = So the more enzymes you have, the more substrates can be dissolved. so theres more activity. **but it doesn't work the other way--> more substrate does not increase enzyme activity. Rebuttal - Substrate…
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temperature, concentration, surface are, nature of reactant, catalyst
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Homeostasis depends on enzymes. Without the enzymes catalyzing the reactions of the metabolism, the cell will lose the equilibrium that is maintained by homeostasis and the cell will die.
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Answer For a true catalyst ... nothing However, they can be contaminated, disperced, vaporized, or otherwise lost.
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1. Biological reactions. my life
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Catalysts are substances that lowers activation energy of a reaction so the reaction occurs more quickly but, in the end, the catalyst is not used up by the reaction. The official definition of the word catalysts is "a substance that increases the rate of a chemical reaction without itself undergoin…
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A catalyst is a substance that speeds up the rate of a chemical reaction. Catalysts work by lowering a reaction's activation energy. A substrate is a reactant of an enzyme-catalyzed reaction.
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a catalyst speeds up the reaction A catalyst can change the reaction energy diagram is that a catalyst speeds up the reaction.
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What does inhibitor do to enzyme activity? They prevent the reactions from happening. Non-competative inhibitors alter the shape of the active site so that the substrate no longer fits, and competative inhibitors block the active site.
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What characteristics do all enzymes share?
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Answer Enzymes are the protein molecules which are involved in the metabolic reactions in the body. These enzymes act as catalysts to various biochemical reactions that take place both in the cell and in extracellular fluids such as stomach acid. They leave the reaction as they entered it with no…
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Enzymes are bio-molecules that act as catalyts for different reactions. They are made up of amino acids. For each reaction, there is a specific enzyme. During each enzymatic reaction, there are molecules at the beginning called substrates which are converted into products. They basically carry out e…
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Tylenol would be considered a catalyst. It is released into our systems after the drug comes in contact with the enzymes found with in our bodies.
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catalyst will generally reduce the activation energy
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Answer pH is the acidity. low pH is more acid, while high pH is more basic.
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my dick control everything:(
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Answer An enzyme-substrate complex uses the reactants(substrates) and the enzyme. The enzyme is like a catalyst that reduces the required activation energy and speeds up the chemical reaction.
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No, there are structural proteins, functional proteins [enzymes] and regulatory proteins. Are all enzymes proteins? Yes. Further, many proteins are closely associated with Rnas.
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A homogenous catalyst is in the same phase as the reactancts. A heterogenous catalyst is in a different phase to the reactants. For example, if all the starting materials in the reaction were liquids and you were using a liquid catalyst, then this would be homogenous catalysis. Other examples includ…
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it disolves in itself
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In living things
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Its just water added with sugar.
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A catalyst lowers the activation energy for a reaction between two molecules by providing an alternative path for the reaction to happen.This way more molecules will collide with the correct amount of energy, hence speeding up the reaction.
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Answer By providing an alternative pathway with a lower activation energy.
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An enzyme is a protein that acts as a catalyst in a living thingEnzymes are proteins which work as a biological catalyst, i.e. increases the rate of the chemical reaction.
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Catalysts are important because they speed up chemical reactions without loosing their own chemical make up. God Bless America cause all y'all rednecks got to go y'all sons of a bitches y'all dumber than Donald trump long lip ass stupid hoes
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A large number of reactions occur in the cell, many of which requiring enzymes to work. From the creation of the ATP used to energize the cell to the creation of proteins from RNA, each new type of reaction needs its own enzyme to work, and often need dozens if not hundreds of that enzyme to do the …
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They break down molecules into smaller parts.
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what is enzymes
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Examples of some common catalysts are: Manganese dioxide: in decomposition of Hydrogen peroxide and Potassium chlorate Sulfuric acid: in some esterification reactions Vanadium(V) oxide: in oxidation of sulfur dioxide to trioxide etc.
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Enzymes are biological catalysts, they speed up chemical reactions inside livig things. They are made up of proteins. Enzymes have a special shape, there is a starting chemical called a substrate that fits into the enzymes special shape. - you may wanna consider the substrates that are in enzyme's …
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increase the speed of a chemical reaction
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An environmental catalyst speeds up an environmental related process. It is useful in conversion of green raw materials and waste into energy.
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No, enzymes are generally proteins (with exceptions), not carbohydrates.
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They often form colored compounds.They can have a variety of different oxidation states.At least one of their compounds has an incomplete d-electron subshell.They are often good catalysts.They are silvery-blue at room temperature (except copper and gold).They are solids at room temperature (except m…
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In terms of biological molecules, enzymes are proteins. There is another method of classifying enzymes. This classification is based on function. There are 6 catagories: 1. Oxidoreductases 2. Transferases 3. Hexokinases 4. Liases 5. Isomerases 6. Ligases
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Biological catalysts. They alter the speed of a reaction without undergoing permanent changes themselves.
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Dunno. But this is pretty cool. But if i search the question, i obvioudly don't know it, so why would i be given an optionto answer it?
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These elements are very hard, with high melting points and boiling points. Moving from left to right across the periodic table, the five d orbitals become more filled. The d electrons are loosely bound, which contributes to the high electrical conductivity and malleability of the transition elements…
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I believe it is a "Key in a lock" formation
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A catalyst decreases the activation energy of a chemical reaction.
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Enzymes are proteins with catalytic abilities. Read more: http://wiki.answers.com/Q/What_type_of_biological_molecule_is_an_enzyme#ixzz28CAHQ2IG
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Catalase is an enzyme which breaks down hydrogen peroxide
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§Most are globular proteins that act as biological catalysts§Holoenzymes consist of an apoenzyme (protein) and a cofactor (usually an ion)§Enzymes are chemically specific
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they are efficient. their action is affected by the environment. they are specific.
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Apples have digestive enzymes in them.
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Enzyme are used to catalyse chemical substance from simple to simpler substances without itself .
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Yes. Electricity can cause a chemical change. On the History channel they showed electricity doing something to a copper penny that made a chemical change .(don't exactly what the electricity did to it but it did cause a chemical change)
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Restriction enzymes (also known as restriction endonucleases) are proteins which cut DNA up at specific sequences in the genome. For example, the commonly used restriction endonuclease EcoRI recognizes every point in DNA with the sequence GAATTC, and cuts at the point between the Guanine and Adenine…
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If the temperature is increased then the enzyme becomes denatured. This happens at about 50-60 degrees in the human body. When enzymes are heated up too much they vibrate so vigorously that the bonds holding the protein structure in its specific shape break. The enzyme shape changes and the substrat…
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Temperature, pressure, catalyst, surface area
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Enzymes are important because they initiate and regulate biological activity. Enzymes are biological catalysts which means that they speed up chemical reactions inside and outside cells. For example, the digestive enzyme amylase, found in the saliva, breaks down starch into smaller molecules so th…
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The concentration of reactants is changed. If the reaction occurs in the gas phase
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decreasing the activation energy required for a reaction
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Catalyst is the agent which alter the rat of chemical reactions.Catalyst is not consumed by the reaction as the other reactants. those catalyst which increases or speed up the reaction are known as positive catalyst.Those slows the reaction are known as negative catalyst.Catalyst may act by decreasi…
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Enzymes catalise reactions by lowering the activation energy needed without themselves being used up in the process. Without catalists such as enzymes, come chemical metabolic reactions which would take forever to to happen or not happen at all because they require an input of energy can happen.
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A catalyst is something that provides an alternative route for a reaction to occur, either by allowing the reaction to occur at a different transition state or by changing the activation energy, and the catalyst itself does not undergo any chemical change during the reaction (materials that do under…
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A catalyst for an organic chemistry reaction would be any substance that speeds up the reaction. This would include metals such as platinum, palladium, mercury, zinc, and even certain acids. It must be noted that the catalyst varies for every reaction. An organically based catalyst (a catalyst ma…
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Yes, enzymes are proteins.
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Catalyst work in non living things while enzyme work inside living things. They are not catalyst but instead they can be called biocatalysts. Hope it helps.
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Most enzymes are proteins, yes. However, the statement (used some number of years ago) that all enzymes are proteins is false. There are a few (but important) exceptions to that generalization.
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Yes
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It either lowers the activation energy or increases the activation energy, allowing the reaction to occur faster or slower respectively. It modifies the rate of the reaction.
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The answer is rest
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Proteins that act as biological catalyst are called enzymes.
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lower activation energy, make the reaction more economical
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