Lecture 1 Flashcards
biosphere: all the …
ecosystems on earth
ecosystem: all … and … factors in a certain area
biotic; abiotic
community: all … in a certain … that …
living organisms; ecosystem; interact
population: all organisms of one particular … in a …
species; community
organism: one …, one … of the population
individual; body
organ system: the … which allow an organism and its related parts to …
processes; function properly
organs: a group of assorted … which makes up the organ system and performs …
tissues; bodily functions
tissues: materials which … are made of
organs
cells: living thing that has a … to keep it apart from others; makes up …
membrane; tissues
molecule: group of … held together by …; make up cells
atoms; covalent bonds
atom: smallest unit of … that maintains the properties of an …
matter; element
order of biological levels (e.g. ecosystem):
biosphere ecosystem community population organism organ system organs tissues cells molecule atom
binomial nomenclature and classification has the following order (from most to least general)
domain kingdom phylum class order family genus species
there are about …-… million described species, and at least … that many undescribed
1.5; 1.8; 2 times
in most ecosystems, the abundance of organisms …. as their individual size decreases
increases
