Unit 1 Vocab Flashcards
mutation
random change
immigration
move into a population
emigration
move out of a population
autotrophic
no organism that can produce it’s own food using light, water, carbon-dioxide or other chemicals
photosynthesis
the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar
adaptation
changes in a population over time
relative age
age of fossil as determined by layers found according to geological scale
absolute age
using radiometric age
embryology
study of how organisms develop
homologous structures
occur in different species that originated from same ancestor species = closely related
biogenesis
living things come from other living things
half-life
amount of time it takes for half of a sample to decay to stable form
isotope
elements that differ in number of neutrons
microscope
spherical, composed of many protein molecules that are organized as a membrane
coacervates
collection of droplets that are composed of lipids, amino acids, and sugars
RNA
a nucleic acid present in all living cells that has structural similarities to DNA.
anaerobic
without oxygen
heterotrophic
different to eat
prokaryotes
cells that have no nucleus and no nucleus membrane
aerobic
free oxygen
eukaryote
organisms whose cells have a nucleus enclosed within a nuclear envelope
speciation
how a new kind of plant or animals species is created
chemosynthesis
occurs in bacteria and other organisms and involves the use of energy released by inorganic chemical reactions to produce foods
analogous structures
closely related functions but derived from different ancestral species = not closely related
