The Levels ofBiological

Organization:

*MOLECULAR LEVEL =>•from atoms & molecules tocomplex molecules like DNA

*CELLULAR LEVEL =>•The CELL is the smallest unit oflife capable of carrying out all thefunctions of living things.

(all living things are made of cells)

*TISSUE LEVEL =>•A group of similar cells thatperform a specific function is aTISSUE.

*ORGAN LEVEL =>•Several different types of tissuesthat function together to do acertain job is an ORGAN.

HEART = ?muscle tissuenerve tissue

connective tissuefat

etc...

*ORGAN SYSTEM LEVEL =>•Several different organs workingtogether for a specific function isan ORGAN SYSTEM.

ORGAN SYSTEMS ?digestive

respiratorycirculatorynervous

reproductiveetc...

*POPULATION LEVEL =>•the actions of individualorganisms and their interactionstogether

*A group of organisms of thesame species in any given

area is a POPULATION.

*COMMUNITY LEVEL =>•A COMMUNITY includes allpopulations of different organismsliving in a given area.

*ECOSYSTEM LEVEL =>•An ECOSYSTEM includes thecommunity of organisms in an areaas well as the non-living factors(ABIOTIC)

All ecosystems combine toform the BIOSPHERE.

•A scientist studying theeffects of cholesterol on thearteries of the heart is workingat the _______ level oforganization.

•A scientist comparing numbersof roundworms in polluted vs.unpolluted soil samples isworking on the ______ level...

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