The scientific study of life
1. all living things have cells 2. cells are basic building blocks of organisms 3. all cells come from other cells Note: Robert Hook discovered cork cells Leeuwenhook discovered blood and sperm cells Schleiden & Schwann - All living things have cell
A taxonomic category above the kingdom level. The 3 domains are Archaea, Bacteria, and Eukarya
One of two prokaryotic domains. The other being Eukarya
One of two prokaryotic domains. The other being Bacteria. -Most live in extreme environments -Halophiles : Salty Lakes -Thermophiles: Hot Springs
Domain that included all eukaryotic organisms
Eukaryotic cell. More complex than prokaryote. Has organelles. Plant and animal cells.
Descent with modification; the idea that living species are descendants of ancestral species that were different from the present-day ones. Also defined more narrowly as the change in the genetic composition of a population from generation to generation. -Core theme of Biology -Natural Selection -Based on adaptations
hierarchy of biological organization
Biological organization based on structural hierarchy of life, from molecules to ecosystems. -Ecosystem -Community -Population -Organism -Organ Systems -Organs -Tissues -Cells -Molecules Note: The atom is at the lowest level (chemical building block of all life)
The editing mechanism in evolution
Simpler than Eukaryote. No membrane bound nucleus. Loose DNA matter
Reducing something complex to study the simpler components. Note: The problem with reductionism is that you can't fully understand the function of something if all you see is it's parts.
A process of inquiry that includes repeatable observations and testable hypotheses. -Latin: to know
steps of the scientific method