Ch 1 Flashcards
an organism is a living thing made up of 1 or more cells; they all reproduce either asexually or sexually which leads to new organisms
Organism
most basic fundamental unit of life
cell
a type of unicellular organism that has only the outer membrane structure known as the plasma membrane and DOES NOT contain a nucleus nor specialized organelles
Prokaryote
any organism whose cells contain a nucleus and other organelles that are enclosed within membranes
Eukaryote
most fundamental unit of elements; basic unit of matter
atom
structures that are made up of atoms bonded together
Molecule
structures that consist of multiple related cells which have the same purpose
Tissue
different tissue types that are organized and interact with a particular purpose
organ
organs whose functions are interrelated
organ system
a group of organisms of the same species breeding and interacting with one another
Population
a group of organisms of a variety of species sharing the same location
Community
the community plus the abiotic components of the area which they survive
ecosystem
the interactions of all the ecosystems over the earth
Biosphere
a property of a complex system that is not exhibited by its individual component parts; the combination of the interactions of chemicals and complex functions leads to emergent properties which ultimately results in an organism being alive.
emergent Properties
refers to an organisms that is able to produce its own food to survive
producers
organisms that consume other organisms or organic matter to receive energy; are unable to produce their own food to survive.
Consumers
an organism that digests dead matter outside of its body and absorbs the digest materials.
Decomposers
organism that obtains its energy from dead bodies or waste products of their environments
Detritivore
process in which a living organism maintains its internal environment - temperature, pH, salinity, oxygen, etc.
Homeostasis
reproduction without sex; results in organisms with the same genetics as their parents; common in unicellular organisms.
Asexual Reproduction
reproduction involving the union of gametes; involves 2 parents mixing their DNA with one another; results in genetic variation
Sexual Reproduction
an inherited trait which enhances survival of the organism which leads to more reproduction
Adaptation
a change in the genetic material not caused by recombination
Mutation
the differential contribution of offspring to the next generation by various genetic types belonging to the same population; organisms traits change through time and these changes can lead to new species
Natural Selection