0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
Is the enzymes affected temporarily or permanents?
That depends on the physical conditions. High temperatures, some substances or changes in pH cause enzymes to be permanently denatured. Very low temperatures and the presence of some inhibitors cause enzymes to be temporarily unable to catalyse reactions.
Why do most enzymatic reactions slow down at extremely high temperatures?
From what I've learned in chemistry, molecules react faster in hotter conditions. Enzymes are the same. When it is a high temperature, it performs faster and therefore "better". However, at lower temperatures, the enzyme is "cold" and reacts and moves slower, therefore performing poorly.
Enzymes have optimal temperatures.most human enzymes have an optimal temperature of about?
The optimal temperature of enzymes in humans is about 37c, the same as the human body's temperature. However, some enzymes work at higher temperatures than 37 but not very high because higher temperatures denatures (destroy) the enzymes.
Why are some bacteria metabolically active in hot springs?
Their enzymes have high optimal temperatures.
Why boiling affect the rate of photosynthesis?
Photosynthesis requires many enzymes to function. An example of one of these enzymes is rubisco, which is involved in carbon fixation to RuBP. All enzymes have a specific range of variables in which they perform optimally, like pH ranges or in this case temperature. At a boiling point temperature, it is likely photosynthesis will be nonexistent or at minimal levels. This is because at such a high temperature the enzymes can become denatured, and fail to perform. This of course is not true for all types of photosynthesis, as there are some bacteria that are able to perform photosynthesis at extreme temperatures.
Some bacteria are metabolically active in hot springs because?
their enzymes have high optimal temperatures.
Do enzymes lower or increase the need for energy in chemical reaction?
In some cases.
What is the optimum temperature for enzymes in most locations of the human body?
Some enzyme function only in specific conditions, they are activated only in suitable environment. some work only in neutral environment. all ptyalin in saliva works only in the mouth which has a pH of 6-8 but when food is in the stomach wherein it's acidic, ptyalin action stops. enzymes don't function below with freezing point destroyed by too much heat. each organs has a specific temp called optimum temperature. in the human beings, enzymes can't function unless certain vitamins are present/ the right amount of vitamins will give maximum use of vitamins as well as enzymes.
What is organic catalysts which lower the activation threshold?
Enzymes (mostly) and some RNA molecules.
What are some solutions to lower sea surface temperatures?
Ocean stratification is one of the solutions to lower the sea surface temperature.
Why do enzyme molecules change shape at high temperatures?
The rate of enzyme reactions is affected by temperature. All enzymes have an optimum temperature range in which they work most efficiently. An enzyme is most active at its optimum temperature. A temperature rise beyond this point reduces enzyme activity till it completely stops. This happens because the enzymes structure has changed, (often a loss of the correct folding of the molecule) and it's irreversiable. The change of the structe makes the enzyme become useless because it can't bind to subrates to make chemical reactions.
What determines an enzymes function and how many functions does on enzymes have?
The arrangement of it's active site. Some enzymes just provide a place where two reactants can be in a protected environment for the reaction, some enzymes stress bonds of reactant to lower the reaction activation energy and some enzymes have catalytic properties due to the arrangement of the various amino acid R groups in their active site. One enzyme, one substrate(s) and one function. So, many different classes of enzymes. Very much so
