Enzyme 2024

What are enzymes?

• Lipids

• Carbohydrates

• Globular proteins

• Nucleic acids

What is the function of enzymes inside cells?

• Catalyze metabolic reactions

• Regulate body temperature

• Store genetic information

• Provide structural support

What is the mode of action of enzymes in terms of an active site?

• Enzyme saturation

• Enzyme denaturation

• Enzyme inhibition

• Enzyme/substrate complex

What happens to enzymes when exposed to excessive heat?

• They become more active

• They denature and get destroyed

• They increase in specificity

• They become irreversible

What is the lock and key hypothesis related to enzymes?

• Enzymes can fit into any substrate

• Enzymes have multiple active sites

• The substrate fits exactly into the active site

• The active site changes shape constantly

What is the induced fit hypothesis regarding enzymes?

• The active site and substrate are always complementary

• The active site changes after the substrate is bound

• Enzymes have fixed shapes

• The substrate never influences enzyme conformation

What is the effect of temperature on enzyme activity?

• It has no effect

• It increases enzyme specificity

• It denatures enzymes at high temperatures

• It decreases enzyme-substrate interactions

How does pH affect enzyme function?

• It increases enzyme activity

• It changes the shape of enzymes

• It has no effect

• It decreases enzyme concentration

What happens when the substrate concentration increases?

• Enzyme activity decreases

• Enzyme saturation occurs

• Enzyme specificity decreases

• Enzyme denaturation happens

What are inhibitors in relation to enzymes?

• They reduce enzyme activity

• They speed up reactions

• They have no effect on enzymes

• They increase enzyme specificity