Lecture 2 Scientific Method Flashcards
Taxonomy
The branch of biology that identifies, names, and classifies organisms
Systematics
The study of evolutionary relationships between organisms.
What are the classification categories and how are they arranged?
Arranged from least inclusive category (species) to most inclusive category (domain)
Species, genus, family, order, class, phylum, kingdom, and domain
Domain Archaea
Contains unicellular prokaryotes that live in extreme environments
Domain Bacteria
Contains unicellular prokaryotes that live in all environments
Domain Eukarya
Contains unicellular and multicellular eukaryotes
Eukaryotes
Contain a membrane-bound nucleus
Domain Eukarya Kingdoms
Protists (composed of several kingdoms)
Kingdom Fungi
Kingdom Plantae
Kingdom Animalia
Natural Selection
Evolutionary mechanism proposed by Charles Darwin
Some aspect of the environment selects which traits are more apt to be passed on to the next
Favorable traits produce the greater number of offspring that survive and reproduce
Mutations fuel natural selection
The Human Population
Humans depend upon healthy ecosystems for:
- Food
- Medicines
- Raw materials
Biodiversity
The total number and relative abundance of species, the variability of their genes, and the ecosystems in which they live
Scientific Method
4 Steps
- Observation
- Hypothesis
- Experiments and Data Collection
- Conclusion
