Levels Of Organization In Living Things Flashcards
Cell
Basic unit of structure and function in living things
Tissue
A group of cells working together to perform a specific function
Organ
A body structure that is made of different kinds of tissues working together
Organ System
A group of organs that work together to perform a major function
Organism
A living thing
Unicellular
Organisms consisting of only a single cell are called unicellular
Multicellular
Contain hundreds, thousands, even trillions of cells or more
Autotrophic
Make its own food
Heterotrophic
Get food from other organism
Prokaryote
A cell with no nucleus
Eukaryote
Cell with a nucleus
Sexual Reproduction
Producing offspring by two parents
Sperm+Egg
Asexual Reproduction
Producing offspring by one parent
Stimuli
Responding to environmental signals
Homeostasis
Maintaining a stable internal environment