In section 7.4, the textbook states that in virtually all cases, reaction rates increase with increasing...

In section 7.4, the textbook states that in virtually all cases, reaction rates increase with increasing temperature. The rule of thumb is that for every 10°C increase in temperature, the reaction rate doubles. Consider if this is true in an enzyme-catalyzed reaction. In an enzyme-catalyzed reaction, if the temperature is increased by 10°C, what would you expect to happen?

The reaction rate slows because the enzyme partially or completely denatures at the increased temperature.

The reaction rate doubles, in accordance to the rule set forth about the relationship between reaction rate and temperature.

The reaction rate quadruples because the reaction rate for both the enzyme and substrate are affected by temperature.

Solutions

Expert Solution

The enzyme catalyzed reaction works in a narrow range of temperature which is optimum for a particular reaction.

The activity of enzyme as such does not vary with temperature as other inorganic catalysts.

It's activity is however very sensitive towards temperature.

On variation of temperature towards both sides of optimum temperature i.e. Increase or decrease the activity of the enzyme decreases.

While on higher temperature the enzyme structure is denatured and the enzyme is inactive. Lower temperature preserves the enzyme in a temporarily inactive state.

examples- carbonic anhydrase, lactate dehydrogenase

Some enzymes are even active at very low temperature like antifreeze enzymes in arctic fishes.

Some are even stable at very high temperature like Taq polymerase accquired from Thermus aquaticus used in DNA amplification .

queen_honey_blossom answered 2 years ago

Next > < Previous

Related Solutions

On page 512 of your textbook, it states that “…a 10 o C increase in temperature...

On page 512 of your textbook, it states that “…a 10 o C increase in temperature increases the rate of a typical reaction by two or three times.” Is this the case for the decolorization of CV + ? Show your work using 2 of the average temperatures (from the data table) that differ by about 10 o C. The temps I have are 18.1'C and 28.1'C

The demand for skilled workers in the United States has been increasing. To increase the supply...

The demand for skilled workers in the United States has been increasing. To increase the supply of skilled workers, many argue that immigration reform to allow more skilled labor into the United States is needed. Explain whether you agree or disagree. Be thorough please.

1. Why does increasing the temperature increase the rate of a chemical reaction? a.The molecules are...

1. Why does increasing the temperature increase the rate of a chemical reaction? a.The molecules are colliding with the walls of the container more often. b.The products of the reaction act as a catalyst, increasing the rate of reaction. c.There are more collisions between molecules, and the collisions have more energy. d.The products are formed more rapidly, increasing the reactivity of the system. 2. Using the data in the following table, calculate the average rate of the reaction 2NO2(g) →...

Revise the substitutionEncrypt function from section 3.5 (p. 102) of the textbook to (1) remove all...

Revise the substitutionEncrypt function from section 3.5 (p. 102) of the textbook to (1) remove all spaces from the plaintext message before it is encrypted and (2) generate the substitution cipher key from a password. (substitutionEncrypt will call genKeyFromPass to do this.) The password should be a parameter, psw, which will replace key as a parameter in the function header. Write function substitutionDecrypt, which will have two parameters, cipherText, a string, a message encrypted by substitutionEncrypt, and psw, the password...

write the reaction that is happening in the hydrogen generator in symbols, including all states and...

write the reaction that is happening in the hydrogen generator in symbols, including all states and balance (used zinc, HCl, and H20) Write the reaction that is happening in the oxygen generator in symbols, including all states and balance. (used magnesium, hydrogen peroxide and water) Thank you!

If interest rates increase in South Africa, what will follow? Circle all of the correct responses...

If interest rates increase in South Africa, what will follow? Circle all of the correct responses based on the below option: South Africa’s currency (the Rand) will depreciate in value South Africa will import more than it exports South Africa’s balance of trade position will lead to more of a surplus position Countries that export products to South Africa will be pleased Countries that import products from South Africa will be pleased Australia suddenly experiences more of a balance of...

(a) Select all of the correct statements about reaction rates from the choices below. The lower...

(a) Select all of the correct statements about reaction rates from the choices below. The lower the rate of a reaction the longer it takes to reach completion. Reaction rate constants increase with increasing temperature. Solid catalysts increase reaction rates as their surface areas increase. The rate of a reaction is the same as the rate constant of the reaction. The slowest step in a reaction is called the rate-determining step. Reaction rates increase with increasing temperature. The rate of...

Select all of the correct statements about reaction rates from the choices below. A. The lower...

Select all of the correct statements about reaction rates from the choices below. A. The lower the rate of a reaction the longer it takes to reach completion. B. A balanced chemical reaction is necessary to relate the rate of disappearance of a reactant to the rate of appearance of a product. C. The fastest step in a reaction is called the rate-determining step. D. The rate of a slow step has more effect on the overall reaction rate than...

Subjects