- How does pH affect rate of reaction?
- Are enzymes responsible for the Colour changes?
- How does an enzyme speed up a reaction?
- Are enzymes changed by reactions?
- Why is it important for enzymes to remain unchanged after the product is made?
- What 3 letters do enzymes typically end in?
- What 4 things can affect the way enzymes work?
- At what pH and temp The enzymes are highly efficient?
- What happens to a reaction of an enzyme is added?
- Why is it important that enzymes are not changed by the reactions?
- What are the two main types of chemical reactions that are catalyzed by enzymes?
- Why is it important that enzymes are specific?
- Can enzymes make chemical reactions reversible?
- Do enzymes undergo chemical change?
- What would happen if enzymes were not specific?
- Why are enzymes sensitive to temperature changes?
- What effects do end products have on enzymes?
How does pH affect rate of reaction?
Factors affecting enzyme activity Temperature: Raising temperature generally speeds up a reaction, and lowering temperature slows down a reaction.
pH: Each enzyme has an optimum pH range.
Changing the pH outside of this range will slow enzyme activity.
Extreme pH values can cause enzymes to denature..
Are enzymes responsible for the Colour changes?
This redox reaction (reduction followed by oxidation) is responsible for the colour change of the protein heme-group in the enzyme complex which is why the word cytochrome (colourful) is used to describe the enzymes.
How does an enzyme speed up a reaction?
Enzymes are biological catalysts. Catalysts lower the activation energy for reactions. The lower the activation energy for a reaction, the faster the rate. Thus enzymes speed up reactions by lowering activation energy.
Are enzymes changed by reactions?
Enzymes allow many chemical reactions to occur within the homeostasis constraints of a living system. Enzymes function as organic catalysts. A catalyst is a chemical involved in, but not changed by, a chemical reaction. Many enzymes function by lowering the activation energy of reactions.
Why is it important for enzymes to remain unchanged after the product is made?
Enzyme-Substrate Complex This can contort the substrate molecules and facilitate bond-breaking. … One of the important properties of enzymes is that they remain ultimately unchanged by the reactions they catalyze. After an enzyme is done catalyzing a reaction, it releases its products (substrates).
What 3 letters do enzymes typically end in?
The suffix -ase is used in biochemistry to form names of enzymes. The most common way to name enzymes is to add this suffix onto the end of the substrate, e.g. an enzyme that breaks down peroxides may be called peroxidase; the enzyme that produces telomeres is called telomerase.
What 4 things can affect the way enzymes work?
Several factors affect the rate at which enzymatic reactions proceed – temperature, pH, enzyme concentration, substrate concentration, and the presence of any inhibitors or activators.
At what pH and temp The enzymes are highly efficient?
Acids have a pH of less than 7, bases (alkalis) have a pH greater than 7. Enzymes in the stomach, such as pepsin ( which digests protein ), work best in very acid conditions ( pH 1 – 2 ), but most enzymes in the body work best close to pH 7.
What happens to a reaction of an enzyme is added?
As the concentration of the enzyme is increased, the enzyme activity also increases. This means that more substrate will be broken down if more enzyme is added. Again, this increase in enzyme activity does not occur forever. … The substrate concentration is the limiting factor slowing the reaction.
Why is it important that enzymes are not changed by the reactions?
Enzymes lower the activation energy of the reaction but do not change the free energy of the reaction. … It is important to remember that enzymes do not change whether a reaction is exergonic (spontaneous) or endergonic. This is because they do not change the free energy of the reactants or products.
What are the two main types of chemical reactions that are catalyzed by enzymes?
Although a huge number of reactions occur in living systems, these reactions fall into only half a dozen types. The reactions are: Oxidation and reduction. Enzymes that carry out these reactions are called oxidoreductases.
Why is it important that enzymes are specific?
Since the substrate must fit into the active site of the enzyme before catalysis can occur, only properly designed molecules can serve as substrates for a specific enzyme; in many cases, an enzyme will react with only one naturally occurring molecule.
Can enzymes make chemical reactions reversible?
Because most enzyme reactions are reversible, an enzyme can synthesize and decompose molecules. Enzymes reaction rate is dependable on several factors: pH, temperature, and concentration of both the enzyme and substrate.
Do enzymes undergo chemical change?
Enzymes are proteins that have the ability to bind substrate in their active site and then chemically modify the bound substrate, converting it to a different molecule — the product of the reaction. … However, when substrates bind to enzymes, they undergo an enzyme-induced chemical change, and are converted to products.
What would happen if enzymes were not specific?
Enzymes are highly specific and incredibly efficient biological catalysts. For a matter a fact the human body would not exist without enzymes because the chemical reactions required to maintain the body would not occur fast enough. The key to this is the catalytic power of enzymes which drives reactions.
Why are enzymes sensitive to temperature changes?
The reason why enzymes are so sensitive to changes in pH and temperature is that such change can affect the interactions that hold the parts of the protein chain in place. … We say that the enzyme has become denatured.
What effects do end products have on enzymes?
what effects do end products have on enzymes? lock and key. each enzyme fits with a specific substrate at the active site and breaks it down.