lesson 1&2 Flashcards
Science
Organisms
a living thing
Cell
small building blocks
Unicellular
the single cell carries out all functions needed to stay alive
multicellular
different cells are tasked with various jobs.
metabolism
the combination through which an orginism build up or breaks down materials
stimulus
a change in an organisms surrounding
response
a action or change in behavior
development
the process of change in an organism’s life.
asexual reproduction
can reproduce on its own; chicken
sexual reproduction
can’t reproduce on its own needs male and female; human
reproduction
the ability to produce offspring
spontaneous generation
the idea living things can come from nonliving things
controlled experiment
a scientist carries out a sires of test all the tests are the same except for one factor
autotrophs
use the food they make to carry out their own life functions
heterotrophs
obtain energy by feeding off other organisms
homeostasis
keeps internal organs just right for cell functions
classification
process of grouping things based on their similarities
taxonomy
the study of how organisms are classified
binomial nomenclature
the system that names organisms
genus
a classification group that contains closely related organisms; comes first in the scientific name.
species
a group of similar organisms; comes second on the scientific name
Characteristics of living things
Have cells, chemicals of life, use energy, respond to surroundings l, grow and develop, reproduce
Levels of classification
Domain, kingdom, phylum, class, order, family, genus, species
Taxonomic keys
Are useful tools that help determine the identity of organisms
