Chapter 1: A view of life Flashcards
Biology
the study of living things
Living Environment
interaction between the living things in the environment and the non-living things in the environment
Atom
smallest unit of an element composed of electrons, protons, and neutrons
Molecule
union of two or more atoms of the same or different elements
Organelles
“little organs” structures found in cells that carry out the basic functions for the cell to live
Cell
the structural and functional unit of all living things
Unicellular organism
a cell that lives independently
Multicellular organism
similar cells combine to form an organism
Simple multicellular organism
volvox
Complex multicellular organism
human
Tissue
a group of cells with a common structure and function
Organ
composed of tissues functioning together for a specific task
Organ system
composed of several organs working together
Organism
an individual living thing
Population
organisms of the same species in a particular area
Community
interacting populations in a particular area
(only living things)
Ecosystem
a community plus the physical environment
Biosphere
regions of the Earth’s crust, waters and atmosphere inhabited by living things
Living things are______________and contain many complex chemical substances
highly organized
Living things are made up of_____________(unicellular, mulitcellular)
one or more cells
Living things use___________ (cellular respiration, photosynthesis)
energy