A+ SOLUTIONS
We are all biological systems
Organisms
Biology's core theme and explains unity and diversity of life
Evolution
Characteristics of living things:
-organized
-responds to stimuli
-metabolize
-reproduce
-are adapted
Biological systems are HIERARCHICAl (related to)
1. cells- basic unit of life
2. tissues
3. organs
4. organ system
5. organisms
Cell type: Prokaryote
Domain: Eubacteria and Archara
Cell Type: Eukaryote
Domain: Eucarya
Kingdoms: a. protista b. fungi c. plantae d. animalia
Two types of cells
1. Prokaryote
2. Eukaryotic
Prokaryote Define
-were the first to evolve
-are simpler (no nucleus)
-are usally smaller then Eukaryotic cells
Eukaryotic Define
-contain membrane-enclosed organelles; including a nucleus
-containing DNA
-are found in plants, animals, and fungi
Bacteria
(Prokayotes)
-Makes up most of the earths biomass
, -Originated 3.6 bilion years ago
-found in your intestines (E. coli)
-may cause diseases
Stimuli
signals of environmental change
Homeostasis
maintaining a constant intrnal state
Metabolism
chemical conversion of food into energy and building materials
Living things reproduce
-organisms have the potential to leave -offspring
-offspring have characteristics of parents
-DNA [ased from one generation to the next
Adaptations
traits that help organisms survive and reproduce in their environment
Spontaneous Generation
living organisms arise from non-living material
Biogenesis
life originates from pre-existing life
Natural selection
-editing mechanism
-evolution of new species adapted to particualar environments
Taxonomy
names species and classifies them into system of broader groups
Science
an organized way of using evidence to learn about the natural world
-see something happen
-want to make something happen
*answers WHY? HOW? WHAT?
(concludes and never proves)
Scientific claims
based on testing explanations against observations of the natural
world
Tentative
not certian or fixed
Discovery science
1. observing
2. Recording of data
3. analysis of data
4. inductive reasoning to arrive to a logical conclusion
Hypothesis-driven science
1. Encountering a specific problem
2. formulating a question based of pre-exsisting knowledge
3. proposing a hypothesis