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Pepsin is the enzyme that acts only in acidic medium, specifically in the stomach where the pH is around 1.5 to 2. It is a proteolytic enzyme that breaks down proteins into smaller peptides. Pepsin is activated from its inactive precursor, pepsinogen, in the presence of hydrochloric acid. This acidic environment is crucial for its enzymatic activity.
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An enzyme acts to?
An enzyme acts to speed up chemical reactions by lowering the activation energy required for the reaction to occur. It does this by binding to specific substrates and facilitating the conversion of reactants into products. Enzymes are specific in their function, often catalyzing only one type of reaction.
What is the name of an enzyme only acts on one substrate?
Most enzymes are substrate specific because they have a specific shapes active site in which only a specific substrate can fit.
What is a enzyme controlled reaction?
An enzyme-controlled reaction is a biochemical process in which an enzyme acts as a catalyst to accelerate the rate of a chemical reaction without being consumed in the process. Enzymes lower the activation energy required for the reaction to occur, allowing substrates to convert into products more efficiently. These reactions are highly specific, meaning that each enzyme typically catalyzes only one type of reaction or acts on a specific substrate. Enzyme activity can be influenced by factors such as temperature, pH, and the concentration of substrates or inhibitors.
Why was an acid added to the iron II ammonium solution before titration?
The acid is added to the iron II ammonium solution to prevent oxidation of iron II ions to iron III ions, which could lead to an inaccurate titration result. The acid helps maintain the iron II ions in their reduced state for the titration with the permanganate solution.
What kind of mechanism is the enzyme-subtrate complex often compared to?
The enzyme-substrate complex is often compared to a lock-and-key mechanism. In this analogy, the enzyme acts as the lock, and the substrate is the key that fits perfectly into the enzyme's active site. This specificity ensures that only particular substrates can bind to the enzyme, facilitating the biochemical reaction. Alternatively, the induced fit model also describes this interaction, suggesting that the enzyme can change shape to better accommodate the substrate upon binding.
Why acid is added in KMnO4 titration?
Acid is added in KMnO4 titration to provide an acidic medium, which helps to stabilize the oxidizing agent MnO4-. The acidic solution also helps to prevent the premature reduction of permanganate ions and ensures a clear endpoint in the titration by facilitating the reaction with the analyte.
What is a specific enzyme?
A specific enzyme is an enzyme that only changes the speed of ONE reaction. (It only acts on one particular substance that happens to be compatible with that enzyme) i.e. if enzyme A is specific to reaction A, it will change the speed of reaction A. However it will have no effect on any other reaction like reaction B or C.
Why pepsin required an acidic medium to break down protein?
because Pepsin is only active in an acid medium and is destroyed in an alkaline and neutral medium at room temperature and below
An enzyme acts to?
An enzyme acts to speed up chemical reactions by lowering the activation energy required for the reaction to occur. It does this by binding to specific substrates and facilitating the conversion of reactants into products. Enzymes are specific in their function, often catalyzing only one type of reaction.
What is the name of an enzyme only acts on one substrate?
Most enzymes are substrate specific because they have a specific shapes active site in which only a specific substrate can fit.
What is a enzyme controlled reaction?
An enzyme-controlled reaction is a biochemical process in which an enzyme acts as a catalyst to accelerate the rate of a chemical reaction without being consumed in the process. Enzymes lower the activation energy required for the reaction to occur, allowing substrates to convert into products more efficiently. These reactions are highly specific, meaning that each enzyme typically catalyzes only one type of reaction or acts on a specific substrate. Enzyme activity can be influenced by factors such as temperature, pH, and the concentration of substrates or inhibitors.
Why was an acid added to the iron II ammonium solution before titration?
The acid is added to the iron II ammonium solution to prevent oxidation of iron II ions to iron III ions, which could lead to an inaccurate titration result. The acid helps maintain the iron II ions in their reduced state for the titration with the permanganate solution.
What kind of mechanism is the enzyme-subtrate complex often compared to?
The enzyme-substrate complex is often compared to a lock-and-key mechanism. In this analogy, the enzyme acts as the lock, and the substrate is the key that fits perfectly into the enzyme's active site. This specificity ensures that only particular substrates can bind to the enzyme, facilitating the biochemical reaction. Alternatively, the induced fit model also describes this interaction, suggesting that the enzyme can change shape to better accommodate the substrate upon binding.
What is an adaptive enzyme?
An adaptive enzyme is an enzyme which is present in a cell only under conditions where it is clear of adaptive value.
what is a substrate in an enzyme?
A substrate is when the enzyme can only join onto certain substances
Enzyme found in gastric juices?
the enzyme found in gastric juice is Pepsinogenand it only works in an acidic environment (hydrochloric acid is in the stomach)then when that enzyme gets mixed with the hydrochloric acid it creates pepsin and pepsin breaks down proteins into amino acid chainsthere are also other enzymes like:HClReninPepsinogenGelatinaseGastric AmylaseGastric Lipase
What is the function of an enzyme?
Enzymes are biological catalysts that speed up chemical reactions in living organisms by lowering the activation energy required for the reaction to occur. They are highly specific and can catalyze a wide range of reactions within cells.
