The SAT Subject Test in Biology assesses students' understanding of biological concepts and principles.
Living things need energy to survive. Plants capture energy from sunlight through photosynthesis, while both plants and animals release energy from food via cellular respiration.
Takes place in chloroplasts of plant cells: \[ 6CO_2 + 6H_2O + \text{light} \rightarrow C_6H_{12}O_6 + 6O_2 \] Plants use sunlight, carbon dioxide, and water to make glucose and oxygen.
Occurs in mitochondria: \[ C_6H_{12}O_6 + 6O_2 \rightarrow 6CO_2 + 6H_2O + \text{energy (ATP)} \] Cells break down glucose to release energy stored in ATP.
These processes fuel all living things and help balance gases in our atmosphere!
Plants turn sunlight into sugar during photosynthesis.
Humans use oxygen to release energy from food during cellular respiration.
Photosynthesis and respiration are how living things make and use energy.