Exploring Enzyme Function in 5 Minutes

What is the primary function of enzymes in biological systems?

• To transport molecules across membranes

• To store genetic information

• To act as biological catalysts

• To provide energy for reactions

What is the activation energy in a chemical reaction?

• The energy required to start the reaction

• The energy released during the reaction

• The energy stored in the products

• The energy lost as heat

How do enzymes lower the activation energy of a reaction?

• By increasing the concentration of reactants

• By increasing the temperature

• By changing the pH

• By providing an alternative reaction pathway

What happens at the active site of an enzyme?

• The enzyme is denatured

• The enzyme is broken down

• The substrate binds and is converted to a product

• The enzyme is synthesized

What is the difference between intracellular and extracellular enzymes?

• Intracellular enzymes are found in animals, while extracellular enzymes are found in plants

• Intracellular enzymes are proteins, while extracellular enzymes are lipids

• Intracellular enzymes function inside cells, while extracellular enzymes function outside cells

• Intracellular enzymes are active at high pH, while extracellular enzymes are active at low pH

What suffix is commonly found at the end of enzyme names?

• ate

• ine

• ose

• ase

Which enzyme breaks down lipids?

• Lipase

• Protease

• Lactase

• Amylase

At what temperature do most human enzymes function optimally?

• 0 degrees Celsius

• 20 degrees Celsius

• 40 degrees Celsius

• 100 degrees Celsius

What happens to an enzyme when it is denatured?

• It speeds up the reaction

• It becomes more active

• Its active site changes shape and it loses function

• It binds more substrates

What is the typical optimal pH range for most enzymes?

• 9-10

• 1-2

• 3-4

• 7-8