Chapter 1 Flashcards
What are the characteristics of living things?
- consist of one or more cells
- take in and use energy and materials
- sense and respond to changes in the environment
- maintain homeostasis
- reproduce and grow based on information in DNA
state of chemical and physical stability
homeostasis
change
evolution
list the level of organization
atom, molecule, cells, tissues, organs, organ systems, organism
most inclusive level of organization. Earth’s waters, crust, and atmosphere
biosphere
self-feeding organisms
producers
this type of energy flows into the biosphere from the sun, it is also the energy used by plants
solar energy
organisms that feed on producers, animals, feed on plant materials or other animals
consumers
feed on waste of producers and consumers, bacteria and fungi
decomposers
actions in one part of this affect the whole, may eventually impact the entire biosphere
Web of Life
Scientific Method
- Observe some natural phenomenon
- identify a question or problem to explore
- develop a testable hypothesis
- make a specific prediction
- test the prediction
- make sure procedure is working
- analyze data
- communicate results
should be identical to the experimental one, used to compare results against the tested group
control group
eliminate unwanted _________, critical in obtaining reliable results
variables
Occurs when results from a tested subset of a group is not representative of group as a whole
sampling error
must be consistent with experimental findings
experimental conclusions
