This unit covers how cells get the energy they need to grow and function. Key ideas from this unit are:

• Photosynthesis transfers energy from the Sun for life on Earth.
• Cellular respiration releases energy from glucose for cells to do work
• Enzymes decrease the amount of energy needed for reactions to occur in living systems
• ATP is the "energy carrier" molecule (analogous to a rechargeable battery)

The image shows the process of photosynthesis and is from https://www.bio.miami.edu/~cmallery/150/phts/c8.10x21.overview.jpg.