High School Biology explores the fundamental concepts of life sciences, including cellular biology, genetics, evolution, and ecology.
All living things need energy to survive. Plants get their energy from sunlight through a process called photosynthesis, while animals (and plants) use cellular respiration to release energy from food.
Plants use sunlight, carbon dioxide, and water to make glucose (a sugar) and oxygen.
\[ 6CO_2 + 6H_2O + \text{light energy} \rightarrow C_6H_{12}O_6 + 6O_2 \]
Cells break down glucose in the presence of oxygen to release energy, water, and carbon dioxide.
\[ C_6H_{12}O_6 + 6O_2 \rightarrow 6CO_2 + 6H_2O + \text{energy (ATP)} \]
These processes are essential for life, powering everything from growing leaves to running marathons!
\[C_6H_{12}O_6 + 6O_2 \rightarrow 6CO_2 + 6H_2O + \text{energy}\]
Plants capture sunlight to make food through photosynthesis.
Humans and animals use respiration to release energy from food.
Photosynthesis and respiration are how cells transform energy.