Characteristics of LifeBiology is the study of life.
All living organisms share 7 properties that separate them from nonliving things
Organization and cellular structure
Response to stimuliHomeostasisMetabolismGrowth and developmentReproductionChange through time
Cellular organizationEvery living thing is composed of 1 or more cells
The cell is the smallest unit that can be alive
Unicellular-composed of 1 cellMulticellular-composed of more than 1 cell
MetabolismThe sum of all of the chemical reactions that take in and transform energy and material from the environment
Growth and DevelopmentGrowth through cell enlargement and division
Development-process through which an individual becomes an adult-cell differentiation and specialization
ReproductionProduction of new organism like the originalContinues the speciesDNA-contains hereditary info-single trait is a
gene2 methods to reproduceAsexual-1 organism reproduces itself-no
genetic recombination, offspring identical to parent
Sexual-combination of 2 organism’s traits-offspring NOT identical to either parent
Themes in Biology1. Diversity and Unity of Life
All life has some things in common-DNA, cells etc. but also quite diverse-common ancestor
2. Interdependence of Organisms-organisms interact with each otherecology-study of these interactions among organisms and the environmentecosystems-communities of organisms and their environments