Bio chapter 1
Biology- The study of life
Science- the approach to understanding the natural world that is based on inquiry
Discovery science- describing nature
Hypothesis driven science- explaining nature
Discovery science- describes life at many levels from ecosystems down to cells and molecules
Hypothesis- a non-definite explanation for something that’s observable, or an educated guess for a possible cause for something
Scientific theory- a tested explanation for a set of proven hypotheses
Scientific method:
- Observation
- Question
- Create hypothesis
- Test hypothesis
- Results
- Draw conclusions
- Communicate results
Properties of life:
- Order- organisms are highly organized coordinated structures that have one or more cells
- Homeostasis- organisms have multiple regulatory mechanisms to maintain internal condition, internal functions, and cope with environmental stress for survival
- Growth and development- growth results in the addition of mass to an organism, and the formation of new cells and structures
- Energy processing- All organisms use a source of energy for their metabolic activities
- Response to environment- movement towards a stimulus is a positive response, movement away from a stimulus is a negative response
- Reproduction- organisms can reproduce
- Evolution- process where different kinds of living organisms are develop and diversify from their predecessors
Biosphere- highest level of life
Cell- lowest level of life
Biotic organisms- living things
abiotic organisms- nonliving things
ecology- study of ecosystems
dynamics of an ecosystem- recycling of chemical nutrients and unidirectional flow of energy
food chain- how every living thing gets food and how nutrients and energy are passed from creature to creature
prokaryotic cells- simple and smaller, has no nucleus, in bacteria
eukaryotic cells- larger and more complex, has a nucleus, in plants and animals
3 domains of life: bacteria, archaea, eukarya
bacteria and archaea have- prokaryotic cells
eukarya have- eukaryotic cells
eukarya include- plants and animals
- kingdom plantae(plants): uses photosynthesis
- kingdom fungi (fungi): are decomposers
- kingdom animalia (animals): eat to get energy
- protists (multiple kingdoms, single celled
  evolution- change in animals overtime
  charles darwin theory of evolution- animals evolved from their predecessors
  natural selection- animals who adapt the best survive
  artificial selection- selective breeding by humans
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