TED-Ed: Activation energy: Kickstarting chemical reactions - Vance Kite

Chemical reactions in the body require activation energy to proceed. Enzymes, which are proteins, help by lowering this energy, making reactions faster and more efficient. The video introduces the concept of the MODS Squad, a team of enzymes that use different strategies to facilitate reactions: microenvironment, orientation, direct participation, and straining bonds. These strategies help substrates reach their transition state more easily, ensuring that reactions occur swiftly and with less energy input.

What is the term used to describe the energy required to start a chemical reaction?

• Transition energy

• Activation energy

• Reaction energy

• Catalytic energy

How do enzymes affect the activation energy of a reaction?

• They have no effect

• They lower it

• They eliminate it

• They increase it

Which enzyme strategy involves creating a special environment for the substrate?

• Microenvironment

• Direct participation

• Orientation

• Straining bonds

What does the 'O' in MODS Squad stand for?

• Operation

• Organization

• Optimization

• Orientation

Which enzyme strategy involves physically assisting the substrate to complete the reaction?

• Microenvironment

• Orientation

• Direct participation

• Straining bonds