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What are catalysts that slow down a reaction?
The catalysts can be used to increase or decrease the speed of a chemical reaction. The catalysts which reduce the speed of a reaction are called negative catalysts. They decrease the speed of the reaction by increasing the activation energy of the reaction.
How does an enzyme influence a biological reaction?
All reactions, even exergonic, need an activation energy to happen. Enzymes provide that activation energy. Sometimes by their R groups, sometimes by stressing bonds in a molecule in their activation site and sometimes by only providing a space apart from the cytosol in their activation site for two substrates to react.
What is a breaker used for in chemistry?
In chemistry, a breaker refers to a substance that is added to a reaction mixture to stop or inhibit the reaction. Breakers are used to control the reaction kinetics and prevent unwanted side reactions from occurring. Examples include quenching agents, acid catalysts, and inhibitors.
What statements best describe the effect of temperature on chemical changes?
Temperature significantly influences the rate and extent of chemical changes. Higher temperatures typically increase the kinetic energy of molecules, leading to more frequent and effective collisions, which accelerates reaction rates. Conversely, lower temperatures can slow down reactions or even inhibit them, as molecules have less energy to overcome activation barriers. Additionally, temperature can affect the equilibrium position of reversible reactions, favoring either the forward or reverse reaction depending on whether the reaction is exothermic or endothermic.
Is ethanol a holoenzyme?
No, ethanol is not a holoenzyme. Ethanol is a type of alcohol that can act as a substrate or inhibit the activity of enzymes in biological systems. Enzymes are protein molecules that act as catalysts to facilitate specific chemical reactions in living organisms.
Aluminum reacts with oxygen to produce aluminum oxide?
Aluminum reacts with oxygen.Aluminum will burn in oxygen if it is powdered; however, the strong oxide layer on the aluminum tends to inhibit the reaction.If you dust aluminum powder into a Bunsen flame, you get white sparkles which leads to the formation of White aluminum oxide.The chemical reaction is: 4Al + 3O2 -----> 2Al2O3Aluminium oxide is a chemical compound of aluminum and oxygen with the chemical formula Al2O3. It is the most commonly occurring of several aluminum oxides, and specifically identified as aluminum(III) oxide. It is commonly called alumina, and may also be called aloxide oraloxite,
When the level of increases in the blood chemical receptors will the medulla oblongata?
when the level of oxygen increases in the blood , chemical receptors will inhibit the medulla oblongata
Why does an enzyme speed up the reaction of a substrate?
Within an aqueous solution, the concentration of a reactant is the number of molecules within a given amount of the solution. The speed of a chemical reaction depends upon how many successful collisions take place within a set amount of time. For a reaction to take place, the molecules of the reactants have to collide with enough force and in the correct way for them to react. If you increase the concentration of the reactants, there are more molecules and subsequently a higher chance of there being a successful collision. Increasing the temperature also increases the number of successful collisions during a set amount of time (often referred to as collisions per second). It gives the molecules more energy so that when they collide they are traveling faster and, thus, are more likely to react together.
Why doesnt the oxygen that diffuse into the thioglycolate broth inhibit the growth of anaerobic organisms?
Oxygen diffusing into the thioglycolate broth gets consumed by the chemical reaction between the thioglycolate and the oxygen. This reaction forms a gradient of oxygen concentration within the medium, creating an oxygen-free environment at the bottom of the tube where anaerobic organisms can grow.
Does physical weathering inhibit chemical weathering?
Physical weathering can enhance chemical weathering by increasing the surface area available for chemical reactions to occur. This is because physical weathering breaks down rocks into smaller pieces, exposing more surface area to chemical processes like oxidation and hydrolysis. So, physical weathering does not inhibit chemical weathering; instead, it can actually facilitate it.
What may inhibit enzymatic reactions EXCEPT?
Enzymatic reactions can be inhibited by factors such as temperature, pH, and the presence of inhibitors that bind to the enzyme or substrate. Additionally, substrate concentration can also affect reaction rates; if substrates are in low supply, it may limit the reaction. However, an increase in enzyme concentration typically does not inhibit enzymatic reactions; instead, it usually enhances the reaction rate, assuming sufficient substrate is available.
Why does a reaction slow down with time?
The reactant concentrations decrease
