Lesson 1a
single celled organisms
unicellular
composed of many cells
multicellular
organisms that make their own food
autotroph
system used to give organisms their scientific names
means "two names"
binomial nomenclature
directs the cell's activivties
nucleus
all organisms are made up of small building blocks called...
cells
a change in an organism's surroundings
stimulus
organisms that cannot make their own food
heterotroph
the process of grouping things based on their similarities
classification
organisms that have a nucleus in their cells
eukaryotes
involves two parents and combines their genetic material to produce a new organism that differs from both parents
sexual reporduction
the process of change that occurs during an organism's life
development
mistaken idea that living things came from nonliving things
spontaneous generation
the scientific study of how organisms are classified
taxonomy
unicellular organisms whose cell lacks a nucleus
prokaryote
chemical reactions through which an organism builds up and breaks down materials
metabolism
involves only one parent and the offspring is identical to the parent
asexual reproduction
a scientist carries out a series of tests that are identical except for ONE factor
controlled experiment
a group of similar organisms that can mate with each other and produce fertile offspring
species
shows probable evolutionary relationships among organisms
branching tree diagram
an action or a change in behavior
response
a living thing
organism
maintenance of stable internal conditions
homeostasis
a classification grouping that contains similar, closely related organisms
genus
the process by which unrelated organisms evolve characteristics that are similar
convergent evolution