unit 1
Terms
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- atom
- basic unit of matter (oxygen)
- science
- a way of knowing, a critical way of thinking
- manipulated(independent)variable
- deliberately manipulated by the experimentor
- responding(dependent)variable
- the variable that changes in response to the independent variable
- control group
- is used for comparison
- ecosystem
- a community and its nonliving surroundings (temperature, soil)
- Controlled experiment
- test only one variable at a time
- Biology
- the study of life
- molecule
- smallest unit of a compound
- biosphere
- part of the earth that holds life
- experimental group
- subjected to the independent variable
- biological organization
- subatomic particle, atom, molecule, organelle, cell, tissue, organ, organ system, organism, population, community, ecosystem, biosphere
- hypothesis
- educated guess
- controlled variable
- variables in an experiment that the experimentor keeps the same
- organism
- individual living thing (human)
- community
- all the populations that live together in a defined area
- tissue
- a group of cells that perform a similar function
- compound
- a substance formed by the chemical combination of 2 or more elements
- organelle
- specialized structure that performs a special function in a cell (nuclei)
- single blind experiment
- the subjects are not aware of who is the experimental group or who is the control group
- qualitative
- observations not easily measured or counted, more sensory
- double blind experiment
- the scientists ,applying the independent variable, AND the subjects do not know who is in the experimental group or control group
- subatomic particle
- nuetrons, protons, electrons (used to make atoms)
- organ system
- a group of organs that work together to perform functions (circulatory system)
- cell
- basic unit of all forms of life
- organ
- a group of tissue that work together to perform highly specialized functions (brain)
- Characteristics of Life
- order, homeostasis, ability to reproduce, universal genetic code, growth and development, uses energy, responds to the enviorment, evolutionary adaptations
- population
- a group of organisms of one type that live together
- quantitative
- involves numbers, usually measurement like counting, mass, volume
- Scientific Method
- Observation, identify the problem, formulate a hypothesis, make an experiment to prove hypothesis, Record Data, Analyze results, Formulate Conclusion, Publication