BIOLOGY EOC REFERENCE SHEET - Part 2
Develop an understanding of the evolution and diversity of life.
• Classification of Organisms according to Evolutionary Relationships, Historical Development and Changing Nature
of Classification Systems, Eukaryotic vs. Prokaryotic Organics, Eukaryotic Kingdoms, Dichotomous Keys
• Processes by which Organisms or Representative Groups accomplish Essential Life Functions
• Adaptations affecting Survival and Reproduction, Structural Adaptations in Plants and Animals, Disease-Causing
Viruses and Microorganisms, Co-Evolution
• Interactive Role of Internal / External Factors in Health and Disease, Genetics, Immune Response, Nutrition,
Parasites, Toxins
• Patterns of Animal Behavior as Adaptations to the Environment, Innate / Learned Behavior
CLASSIFICATION:
- process in understanding how organisms are related and how they are different
- taxonomy – branch of biology that studies grouping and naming of organisms
- history of classification systems
- 4
Century B.C., Aristotle proposed two groups (plants and animals) and used common names for identification, based on “blood” and
th
“bloodless”
- early 1700s, Carolus Linnaeus developed a system based on physical characteristics
- two kingdoms (plants and animals)
- developed “genus” and “species”
- designed system of naming called binomial nomenclature (“two names”), which gave each organism two names, a genus, and
a species, Genus always capitalized, both should be underlined or italicized
- Six kingdoms: Archaebacteria, Eubacteria, Protista, Fungi, Plantae, and Animalia
- A dichotomous key is a tool used to identify organisms by using pairs of contrasting characteristics
- basis of current classification: phylogeny, DNA / biochemical analysis, embryology, morphology, Phylogenetic trees
LEVELS OF CLASSIFICATION:
CLASSIFICATION OF HUMANS:
- Kingdom
Kingdom Animalia (multicellular organisms that eat food)
- Phylum
Phylum Chordata (dorsal hollow nerve cord, notochord, pharyngeal slits)
- Class
Class Mammalia (hair, mammary glands, endothermy, four-chambered heart)
- Order
Order Primates (nails, clavicle, orbits encircled with bone, enlarged cerebrum, opposable digits)
- Family
Family Homidae (bipedal – walk erect on two feet, advanced tool use)
- Genus
Genus Homo (“human” like)
- Species
Species Homo sapiens
COMPARISON OF EUKARYOTE TO PROKARYOTE:
Prokaryote – has nuclear material in the center of the cell, but is not enclosed by a nuclear membrane; no membrane bound organelles;
examples: bacteria and blue-green algae
Eukaryote – contain a clearly defined nucleus enclosed by a nuclear membrane and membrane bound organelles; examples: plants, animals,
fungi, and protists
COMPARISON OF KINGDOM CHARACTERISTICS
Domain: BACTERIA
Domain: ARCHAEA
Domain: EUKARYA
EUBACTERIA
ARCHAEA
PROTISTA
FUNGI
PLANTAE
ANIMALIA
Bacteria
Ancient bacteria
Protists
Eukaryote
Eukaryote
Eukaryote
Prokaryote
Unicellular
Eukaryote
Multicelluar
Multicellular
Multicellular
Unicellular, colonial
Prokaryote
Unicellular
Aerobic
Aerobic
Aerobic
Aerobic / anaerobic
Less widespread
Multicellular
Decomposer
Producer
Consumer
Decomposer
Protective cell wall
Aerobic
Lack chlorophyll
Photosynthesis
Cellular respiration
Heterotrophic
Methanogens - use
Pathogenic /
Pathogenic
Cell wall (cellulose)
Invertebrates
Photosynthetic (some)
H2 and CO2 to
parasitic
Saprophytic / parasitic
Vascular system, seeds
Vertebrates
Chemosynthetic (some)
produce methane
Animal-like
Medicinal, food source
Poisonous
Symmetry
Pathogenic
Medicinal
(CH4) & energy
(protozoa)
Heterotrophic
Medicinal, food source
Classified by shape
Extreme Environments
Plant-like (algae)
Sexual / asexual
Alternation of generations
Ex: Homo sapiens
Binary fission
-
Thermophiles - heat
Medicinal, food
Alternation of generations
Roots, stems, leaves
Vaccines, antibiotics
- Halophiles - salt
source
Often symbiotic with algae
Pollination(fertilization)
Ex: streptococcus
Ex. methanococcus
Mobile
Ex: mushroom
Germination
Ex: amoeba
Ex: oak
Note: Current classification systems reveal six kingdoms, where Monerans are divided into Archaebacteria (ancient bacteria, anaerobic nature) and
Eubacteria (true bacteria, aerobic nature).