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What happens to the activity of an enzyme on either side of its temperature optimum?
Wiki User
∙ 13y ago
Lower temperature: The energy input increases the flexibility of bonds in proteins.
Higher temperature: Too much energy makes the bonds between the proteins brake and the protein unfolds 'denatures'
Wiki User
∙ 13y ago
Wiki User
∙ 11y agoIt will decrease.
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Explain what happens to catechol oxidase when the pH is on either side of the optimum?
When the pH is not at its optimum, then the differing pHs will disrupt the bonding between the R groups of the amino acid. This will change its shape, altering the shape of the activation site. Within an acceptable pH range, the enzyme will continue to function but since the shape of the activation site has been slightly altered, the reactions won't be able to proceed as quickly as they could at the optimum pH. The further away from the optimum pH, the more the shape of the activation site will change. Eventually, the substrate won't fit into the activation site and the reaction will stop.
What connection can be made between enzyme activity and temperature?
Temperature can directly affect enzyme activity. Increases in temperature can cause the enzymes to operate at a quicker pace and cause the enzymatic reaction to move along faster, while decreases in temperatures can cause the enzymes to become sluggish and the reaction to slow down. If temperatures are too high, then the enzymes can fall apart, or denature due to the extreme heat, and if temperatures are too low, then the enzymes can slow down to a complete halt in some cases. Either way, the enzymatic reaction will stop. Most enzymes have an optimal temperature under which they can work the most efficiently and effectively.
What is effect of temperature on an enzyme?
Many of the enzymes in our bodies work best at body temperature. At significantly lower temperatures the substrate molecules do not have enough kinetic energy for the reaction to take place even in the presence of the enzyme. At body temperatures significantly higher than normal, the enzyme will not work well because the kinetic energy from the molecules in the solution containing the enzyme is so high, that the enzyme's shape is pulled apart to the point that the enzyme is not able to properly function.Indeed the enzyme's structure may be so disrupted or denatured that the enzyme molecule cannot return to its original shape. Indeed the danger of high fevers stems in large part from the potential damage to enzymes and other proteins from the high temperature. The optimum performance of most human enzymes is at about 37o celcius, or the temperature of the human body. Exposing enzymes to elevated temperatures can cause them to denature, which basically means they will no longer be functional. Enzymes are more active at a specific temperature. At higher temperatures they get denatured, so their structure breaks down. Same effect as pH. At lower temperatures they become inactive, in this case when they reach their optimum temperatures, they will become active again.temperature directly affects the rate of enzyme activity.On every 10 degree Centigrade rise in temperature,rate of enzyme activity doubles.but temperature affects up to its optimum range.For example:optimum temperature range of human is 37 degree centigrade.beyond this level of temperature,it can destroy the enzyme's structure and enzyme can be denatured due to fast vibration among its molecules which can lead to the bonds to break
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.
What factors can limit photosynthesis by being either too high or too low?
Photosynthesis can be limited by light intensity, carbon dioxide concentration, and temperature. Temperature must be at an optimum level in order to achieve the best results, while increasing light and carbon dioxide levels both increase the rate of photosynthesis until reaching a plateau. At very high levels, light will damage chlorophyll and reduce the rate of photosynthesis.
What happens to peroxidase when the pH is on either side of the optimum?
it changes
What condition is best for enzyme activity?
enzymes work best at body temperature, that is if the enzmes are human.
How does temperature effect enzyme action?
The enzyme activity increases as the temperature rises due to the substrates colliding with the enzymes' active sites more frequently at higher temperatures. However, each enzyme has an optimum temperature as high temperatures denature enzymes.
What happens to temperature when energy is added as heat?
Either the temperature will increase, or it will remain the same. In the latter case, there is a phase change, as when ice melts.
Eplain how bacteria reproduces and grows?
Bacteria are grown in the test tubes by providing then optimum temperature and nutrient broth. Bacteria can reproduce either asexually or sexually. Bacteria do not have well developed cell organelles.
What happens to an object temperature when it gets more thermal energy?
Either the object's temperature will increase - or, the object will undergo a phase change (for example, from solid to liquid), in which case the temperature will stay the same.
Do you need a router for optimum wifi?
No, the optimum wifi itself runs from a router. If you'd like to use optimum wifi you'll need either a wireless card (for laptops) or a Wireless LAN like Linksys (for PC).
What happens if the body temperature gets to high?
you either die or get hyperthermia or you just get a bad fever that leads to other things
What happens to the rate of photosynthesis when the weather becomes cold?
Photosynthesis occurs within an ideal band of temperature. As the temperature changes in either direction from the center of the band, the photosynthesis rate decreases.
What happens when there is a temperature difference between two object?
Temperature is a measure of the heat energy of objects, and heat is the energy transferred from a high temperature location to a low temperature location.When two objects are in contact, heat always flows from the warmer object to the cooler object by conduction, until thermal equilibrium is established and the heat transfer stops (becomes the same in either direction). The transfer of heat continues as long as there is a difference in temperature between the two points.
What happens to liquids and solids with temperature?
Depending on the temperature, different things could either be a gas, solid, or liquid. For example, water is a solid at 32 degrees Fahrenheit and when it is warmer than that it is a liquid.
What happens to water vapors when the vapors meet cool air?
It either freezes or turns to water if the temperature doesn't drop quickly enough
