Answer:
The correct answers are: B) Catalase works best at human body temperature, C) Normal human body temperature is 98.6°F, which equals 37°C.
Explanation:
Catalase is an enzyme found in our bodies that has the important task of breaking down hydrogen peroxide, a molecule that is very toxic. For catalase to work at its optimus speed, it need the body to have a temperature of 37° celsius -98.6°F-, which is what we normally call human body temperature. If the temperature rises or falls below body temperature, catalase will still work but at a much slower rate, until it stops working completely.
Not all enzymes work best at human body temperature, some enzymes reach their optimus state at higher or lower temperatures; but it is important to remember that enzymes are proteins, and proteins denaturalize when the temperature becomes to high, making them lose their shape and function.
Catalase is an important enzyme for organisms because it breaks down hydrogen peroxide. The human body temperature (37ºC =98.6°F) is optimum for the enzyme activity. The correct options are b) and c).
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ENZYMES
Enzymes are intracellular catalytic polypeptidic molecules that accelerate different natural chemical reactions.
They need to get an accurate tridimensional structure to accomplish their function.
There is a limited temperature and pH level at which they lose that structure and denaturalize.
The increase in temperature accelerates chemical reactions. As temperature increases, the reaction velocity duplicates.
The optimum temperature refers to the point at which the enzymatic activity is the highest. After this point, the enzymatic activity sharply decreases.
Over the optimum point, there is a loss of the catalytic activity, denaturalizing the enzyme.
CATALASE
In organisms, the catalase enzyme turns to be very important because it breaks down hydrogen peroxide, a toxic molecule.
The optimum temperature for catalase is 37ºC.
The enzyme breaks this toxic molecule down into many subproducts, cleaving the hydrogen bonds and producing water and oxygen.
As temperature increases, it turns easier for the enzyme to act on hydrogen peroxide.
However, when temperature exceeds 37ºC, the enzyme denaturalizes, having no effect on hydrogen peroxide.
Under normal conditions, the human body temperature is between 36.5 and 37ºC, which makes it ideal for good enzyme activity.
So, like many other organisms, humans use this enzyme to protect themselves from the toxic compound.
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