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Biology Department: Enzymes and Their Functions

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Biology Department: Enzymes and Their Functions

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Questions and Answers

How do enzymes lower the activation energy of a reaction?

By breaking the substrate bonds

By increasing the temperature of the reaction

By decreasing the concentration of the substrate

By stretching the substrate bonds (correct)

Which enzyme class is responsible for transferring functional groups between donor and acceptor molecules?

Hydrolases

Ligases

Transferases (correct)

Oxidoreductases

What is the function of Isomerases in biochemical reactions?

Add water across a bond

Transfer functional groups

Carry out various kinds of isomerization reactions (correct)

Catalyze ligations with energy from ATP

In terms of enzyme function, what is the role of Ligases?

Join chemical groups using energy from ATP Signup and view all the answers

How does temperature affect enzyme function according to the text?

Optimizes enzyme function initially, then may denature the enzyme at high temperatures Signup and view all the answers

What is the primary reason behind stretching the bonds of the substrate in enzyme reactions?

To decrease activation energy Signup and view all the answers

Which class of enzymes is responsible for adding water across a bond to hydrolyze it?

Hydrolases Signup and view all the answers

In enzyme classification, which class is specialized in transferring phosphate groups?

Transferases Signup and view all the answers

What is the function of Ligases in biochemical reactions?

Join two chemical groups with the use of energy from ATP Signup and view all the answers

Which factor plays a vital role in determining the optimal functioning of enzymes?

Temperature changes Signup and view all the answers

What kind of reactions do Isomerases catalyze?

Isomerization reactions Signup and view all the answers

Which enzyme class is involved in adding or removing hydrogen atoms from chemical groupings?

Oxidoreductases Signup and view all the answers

What is the significance of ATP in enzyme reactions catalyzed by Ligases?

Supplies energy for joining chemical groups Signup and view all the answers