Exam 1 Flashcards
What is biology?
the scientific study of life
What are the levels of biological organization?
Molecules Organelles Cells Tissues Organs and Organ Systems Organisms Populations Communities Ecosystems Biosphere
What are the three domains of life?
Bacteria
Archaea
Eukarya
Domain Bacteria
includes the most diverse and widespread prokaryotes which are in a rod-shaped structure such as bacteria. classified into multiple kingdoms.
Domain Archaea
Some prokaryotes which live in the most extreme environments. classified into multiple kingdoms.
Domain Eukarya
for the purpose of this class, there are 4 kingdoms within this domain: Plantae, Protists, Animalia, Fungi.
Kingdom Animalia
consists of multicellular eukaryotes that ingest other organisms
Kingdom Plantae
consists of terrestrial multicellular eukaryotes that carry out photosynthesis (conversion of light energy to chemical energy in food)
Kingdom Fungi
defined by nutritional mode of its members, which absorb nutrients from outside their bodies
Kingdom Protists
unicellular eukaryotes and some simple multicellular relatives.
On the Origins of Species by Means of Natural Selection
Published by Charles Robert Darwin in Nov 1859
Two main points of On the Origin of Species
1) Species have arisen from