Classifying Living Things

Science

Classifying Living Things Chapter Video

Classifying Living Things Chapter Video

bacteria

a domain of unicellular prokaryotes with cell walls

bacteria Simple Definition

cell

the basic unit of life

cell Simple Definition

fungi

the kingdom of organisms that absorb nutrients from dead matter, like mushrooms or molds

fungi Simple Definition

invertebrate

an animal without a backbone

invertebrate Simple Definition

microorganism

a very small organism that can only be seen with a microscope, like bacteria

microorganism Simple Definition

nucleus cell

the control center of a cell

nucleus cell Simple Definition

organ

a group of tissues that work together to perform a function, like the heart, liver or stomach

organ Simple Definition

organ system

a group of organs that work together to perform a specific function, like the digestive system

organ system Simple Definition

organism

any living thing

organism Simple Definition

photosynthesis

the process by which plants use sunlight, carbon dioxide, and water to make food

photosynthesis Simple Definition

species

a group of similar organisms that can breed and produce fertile offspring

species Simple Definition

tissue

a group of similar cells working together to perform the same function

tissue Simple Definition

vertebrate

an animal with a backbone

vertebrate Simple Definition

Related Chapters