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If several enzymes fit the same substrate they would be considered what?
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∙ 15y ago
competitors
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∙ 15y ago
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What is better more substrates or more enzymes?
Depends on how much substrate the enzyme can process. Most enzymes can process more than one molecule of substrate without denaturing or becoming unusable. However, in the terms of your question. More substrate is better. Too many enzymes would mean the reaction would be cut short, because they would all react the substrate at once. So for a prolonged, efficient reaction more substrate would be proper.
What are the molecules that enzymes act on called?
The molecule upon which an enzyme acts is called the substrate.
How does the enzyme subsrate help the enzyme work?
Substrates don't help enzymes to work. Without a substrate, an enzyme would have nothing to work on. A substrate is the substance acted on by an enzyme.
Does a substrate molecule need and enzyme molecule?
No substrate molecules can react on their own, however without enzymes this occurs at such a slow rate that, chemical reactions required to sustain life would not occur fast enough and the organism would die.
What happens if the enzyme concentration is low?
An enzyme can overcome the presence of a competitive inhibitor by increasing the substrate concentration The reaction rate falls direct propartional to the concentration fall (which is the result of that same reaction). This is called 'first order reaction rate'.
What is better more substrates or more enzymes?
Depends on how much substrate the enzyme can process. Most enzymes can process more than one molecule of substrate without denaturing or becoming unusable. However, in the terms of your question. More substrate is better. Too many enzymes would mean the reaction would be cut short, because they would all react the substrate at once. So for a prolonged, efficient reaction more substrate would be proper.
What are the molecules that enzymes act on called?
The molecule upon which an enzyme acts is called the substrate.
What substrate does bromelain work on?
Mostly just proteins. For example, collagen.
How does the enzyme subsrate help the enzyme work?
Substrates don't help enzymes to work. Without a substrate, an enzyme would have nothing to work on. A substrate is the substance acted on by an enzyme.
Would you expect a fat and a sugar molecule to be acted upon by the same enzyme?
No. enzymes are very specific to their substrate.
How are substrates like keys and enzymes like locks?
Enzymes have an active site that is specific for a substrate - therefore enzymes only work when the right substrate is present. The surfaces of the enzyme and the substrate fit together - like a lock and key - allowing the enzyme to fulfil its function. The theory of "induced fit" is more widely accepted - it is similar, but the enzyme shape changes to accommodate the substrate.
Would catalase act on chemicals other than hydrogen peroxide?
Catalase is an enzyme and enzymes work best with a specific substrate. The enzyme can work with any substrate just not as efficient .
What is The function of enzymes in plants?
Enzymes are proteins that speed up chemical reactions. If living things did not have enzymes, they would need to rely on random collision, or heat. Collision is not preferable because the substrates must collide perfectly (could take awhile). Raising the heat energy in our body would cause all the reactions to go off at once, which is also not preferable. Enzymes are catalysts. They all have a specific shape, which determines function. The substrate fits perfectly into the enzyme.
Does a substrate molecule need and enzyme molecule?
No substrate molecules can react on their own, however without enzymes this occurs at such a slow rate that, chemical reactions required to sustain life would not occur fast enough and the organism would die.
What happens when you halved the amount of enzymes in a reaction?
It would take a longer amount of time for the substrate to be fully broken down into its final products.
What happens if the enzyme concentration is low?
An enzyme can overcome the presence of a competitive inhibitor by increasing the substrate concentration The reaction rate falls direct propartional to the concentration fall (which is the result of that same reaction). This is called 'first order reaction rate'.
Describe the chemical compositions and configuration of enzymes and discuss the factors that modify enzymes structure and function?
Enzymes are composed of amino acids, and have different bonds such as a hydrogen bond which maintains the enzyme's shape. Factors such as temperature and pH have an effect upon the enzymes structure. Enzymes have slower rates of reaction when the temperature is below the enzymes optimum temperature. This is due to the fact that hydrogen bonds are stronger at lower temperatures meaning that the enzyme is less flexible and so, using the induced fit theory, this means that the substrate is less able to fit into the enzymes active site meaning less substrate is broken down therefore the rate of reaction is much less than it would be at the enzymes optimum temperature. When the temperature also exceeds the enzymes optimum temperature the rate of reaction is again slower that it would be at the optimum temperature, this is due to the high temperature causing the hydrogen bonds to be broken, meaning the enzyme can be denatured, and there is a point where the enzymes are unable to "renature" (when temp is returned to optimum) because too many hydrogen bonds would have been broken. pH is a factor which also affects the enzymes structure, by changing the pH from the enzymes optimum pH you are then causing there to be a change in the enzymes structure and molecular shape. pH can in turn strengthen or weaken the intermolecular forces like the hydrogen bonds. Competitive inhibitors can also alter the enzymes function. Competitive inhibitors have a molecular shape which is similar to the shape of the substrate; This means that they can occupy the enzymes active site meaning that they compete with the substrate for an available active site. The difference between the concentration of the competitive inhibitor and the substrate determines the effect upon the enzyme activity, if the competitive inhibitors concentration is highest the effect of the substrate is lessened. The inhibitor is not permenantly bound to the enzymes active site, so when it leaves another molecule may take its place, either another inhibitor or substrate. Sooner or later all of the substrate will occupy active sites of enzymes, but if the inhibitor concentration is higher this may take some time. Non-competitive inhibitors can also effect the enzyme activity by attaching themselves to the enzyme, but not at the active site. This attachment means the enzyme's active site may under-go a shape change meaning that the substrate may not fit into it, causing the effect of the enzyme to be lowered as less substrate can be broken down. Non-competitive inhibitors may be permanent. Hope this helps you, even if it is very slightly.
