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which of the following statements about enzymes is not true.?
A. enzymes are consumed during chemical reactions
B. Enzymes decreases the free energy of activation of specific reactons
C. Enzymes increase chemical reaction rates
D. Enzymes have unique pH and temperature optima

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18 Jul 2018
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Related questions

answer all of them

All of the following are true of enzymes except

A-Enzymes increase the rate of a chemical reaction.

B-Enzymes are not part of the products of a chemical reaction.

C-Enzymes create a chemical reaction.

D-Enzymes are not consumed in a chemical reaction

2-Reverse transcriptase is used to make ______ from an RNA template

3-

Environmental factors that influence microbial growth are (SELECT ALL THE APPELTY )

temperature

gases

pH

osmotic

pressure

radiation

hydrostatic

pressure

4- What is the definition of Generation Time

28. Which of the following statements about enzymes is false?

An enzyme changes shape when it binds to a substrate.

Enzymes lower the activation energy.

Enzymes are highly specific.

An enzyme may orient substrates, induce strain, or temporarily add chemical groups.

Most enzymes are much smaller than their substrates.

29. What is a transition state?

The place where a substrate molecule binds to an enzyme

A reactant with high potential energy

The combination of a substrate and an enzyme

The state at which the bonds of reactants are unstable

The active site where reactants are oriented

39. Which of the following statements about enzymes is true?

Enzymes are proteins.

Enzymes have a specific amino acid sequence.

enzymes are highly specific.

Enzymes lower the energy barrier.

All of the above

All True orFalse

17.___ Enzymes are structurescomposed of protein and possibly both an inorganic cofactor such asFe+ and an organic cofactor such as coenzyme FAD.

18.___ Enzyme optima are said to berelative because the same enzyme (in terms of function) in twodifferent organisms may have very different pH or temperatureoptima when compared to each other.

19.___ Enzymes have the ability toreduce the energy needed for a chemical reaction to take place byreducing both the initial energy of the reactants and the finalenergy of the products.

20.___ Enzymes may commonly changechemically during a chemical reaction they are facilitating but arenot modified at the completion of that chemical reaction.

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