Download APn 01 View of Life, Part 1.isf

APn 01 View of Life, Part I
Define Life
Organization:
1. Emergent Properties: each level is more complex that the level
preceding it and has properties beyond those of the former level
2. Levels:
Acquire Materials and Energy
1. Energy defined: capacity
2. Source:
Biosphere Organization
The biosphere is the zone of air, land, and water
at the surface of the Earth, where organisms
exist.
Complexity
1. Beyond the individual to populations,
communities
and ecosystems.
2. In ecosystems there is: chemical cycling and
energy
flow which originates with autotrophs.
3. With each transfer of energy, some is
3. Metabolism:
2. Rain forests and coral reefs
are
Respond
1. Interact with the environment, often involves
3. We need healthy ecosystems
for
2. Behavior: collective responses: search and compete for
Biodiversity
Reproduce and Develop
1. Binary fission:
2. Most organisms:
3. Instruction is genes (DNA)=
Adapt
Taxonomy
The discipline of identifying and
classifying organisms according to
certain rules, involves evolutionary
relationships, changes as more is
learned
Categories
Most inclusive to least:
Humans
1. Modify ecosystems for
4. Needed to maintain homeostasis
Classification
1. Defined: total number of
species, variability of genes
and the different
ecosystems in which they
live.
2. Extinction: death of a
species or larger
classification category.
Losing as many as
Domains
1. Bacteria: unicellular procaryotes,
widely distributed
2. Archaea: unicellular procaryotes,
survive in extreme environments
3. Eucarya: eucaryotes,
Kingdoms
1. SuperKingdom Monera: Domains
Bacteria and Archaea
2. Protista: Unicellular --> multicellular,
contains autotrophs and heterotrophs,
ex. Paramecium
3. Fungi: mostly multicellular, absorptive
heterotrophs, ex.
mushroom
4. Plantae: multicellular autotrophs,
specialized tissues, ex. apple tree
5. Animalia: multicellular ingestive
heterotrophs, specialized tissues, ex.
YOU!
1. Adaptations are modifications that make organisms better
2. Natural Selection = [species] modification over time
2. Evolution: descent with modification over time. Life has a common ancestor, each species is adapted to
their environmental conditions, gives
Scientific Names
Use binomial nomenclature: two-part
name, genus and then species
(specific epithet), Latin