Biology - Overview

Question 0

6 main kingdoms

Answer 0

Bacteria
Archaebacteria 
Protista
Fungi
Viridiplantae 
Animalia

Question 1

Linnaean hierarchy

Answer 1

Domain
Kingdom
Phylum
Class
Order
Family
Genus
Species

Question 2

Origins of life

Answer 2

Earth formed 4.5 BYA
Chemically rich oceans formed as molten earth cooled
Life emerged 3.8-2.5 BYA
Early atmosphere: CO2, N2, H2O
Methane converted to other carbon compounds

Question 3

Species

Answer 3

Biological: population can interbreed and create offspring
Phylogenic: populations with unique genetic history
Species can be define 60+ ways

Question 4

Analogous vs homogenous

Answer 4

Analogous: similar due to convergent evolution
Homologous: similar due to shared ancestry

Question 5

Bacteria

Answer 5

Recycles carbon and sulfur
Extracts nitrogen from air
Photosynthesis
Highly diverse
Most abundant life on earth
Some human pathogens

Question 6

Archaeabacteria

Answer 6

Methagens: use h2 to reduce co2 to ch4
Extremophiles
Non extreme Archea: live similar to bacteria

Question 7

Eukaryotes

Answer 7

Rules earth until 1BYA
Complex cell organization slows evolution
Membrane system divides cells into functional compartments
Subdivision of labor
Mitochondria
Chloroplasts

Question 8

Eukaryotes

Answer 8

Compartmentalization/sub cellular specialization
Multicellularity
Sexual reproduction / variability of species

Question 9

Protists:

Answer 9

Paraphyletic
Both aerobic and anaerobic cells
Catch all for all eukaryotes that arent fungi plants or animals

Question 10

Viruses:

Answer 10

Not living
Parasitic chemicals
Only divide within living cells