Sure, here are some essential biology definitions:Cell: The tiny building blocks that make up all living things.DNA: It's like a biological instruction manual that tells living things how to grow and function.Gene: A piece of information passed from parents to their children that determines traits like eye color or height.Organism: Any living thing, like animals, plants, or even tiny bacteria.Species: A group of similar organisms that can have babies together.Photosynthesis: Plants using sunlight to make their food, kind of like how we eat to get energy.Respiration: Breathing in oxygen and breathing out carbon dioxide to stay alive.Mitosis: When cells divide to make new cells, like when you get a cut and your skin heals.Evolution: How living things change over time to better survive in their environment.Ecology: Studying how living things interact with each other and their surroundings.