Podcast
Questions and Answers
What is the role of enzymes in biological reactions?
What is the role of enzymes in biological reactions?
- They participate in the reaction
- They increase the activation energy
- They act as substrates
- They decrease the activation energy (correct)
Which part of the enzyme is responsible for binding to the substrate?
Which part of the enzyme is responsible for binding to the substrate?
- Active site (correct)
- Cofactor
- Apoenzyme
- Holoenzyme
What is a holoenzyme?
What is a holoenzyme?
- An active enzyme without its apoenzyme
- A complete, functional enzyme with its cofactors (correct)
- An enzyme with a non-specific active site
- An inactive enzyme lacking its cofactors
What happens when a substrate binds to an enzyme’s active site?
What happens when a substrate binds to an enzyme’s active site?
What do enzymes do to the energy barrier required for a reaction to occur?
What do enzymes do to the energy barrier required for a reaction to occur?
How do enzymes achieve faster reaction rates in biological reactions?
How do enzymes achieve faster reaction rates in biological reactions?
What are the two groups into which cofactors can be subdivided?
What are the two groups into which cofactors can be subdivided?
Which type of enzymatic action involves joining two or more substrate molecules together?
Which type of enzymatic action involves joining two or more substrate molecules together?
What are the most common cofactors called if they are also metal ions?
What are the most common cofactors called if they are also metal ions?
Which family of enzymes is responsible for assisting in the breakdown of carbohydrates?
Which family of enzymes is responsible for assisting in the breakdown of carbohydrates?
What type of specificity involves the enzyme acting on a particular steric or optical isomer?
What type of specificity involves the enzyme acting on a particular steric or optical isomer?
In the lock-and-key model of enzyme binding, how does the active site change during substrate binding?
In the lock-and-key model of enzyme binding, how does the active site change during substrate binding?
Which model of enzyme binding proposes that the enzyme changes its shape for substrate binding, forming a shape complementary to the substrate only after it has been bound?
Which model of enzyme binding proposes that the enzyme changes its shape for substrate binding, forming a shape complementary to the substrate only after it has been bound?
What is the term for cofactors that are tightly bound to enzymes?
What is the term for cofactors that are tightly bound to enzymes?
Which group specificity involves the enzyme acting only on molecules with specific functional groups such as amino, phosphate, and methyl groups?
Which group specificity involves the enzyme acting only on molecules with specific functional groups such as amino, phosphate, and methyl groups?
