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Ch 1 Biology

Characteristics of Life Stable internal environment, respond to changes to environment, made of cells/similar molecules (Carbon, Oxygen, Nitrogen, Hydrogen, reproduction, DNA, metabolize, develop (grow), digest food, and excrete waste, energy
Homeostasis maintaining constant internal conditions
Scientific Method process of examination and discovery
Hypothesis proposed explanation for a phenomenon, rejected if not supported by data
Controlled Testing design experiments with a result in mind
Control group group of subjects who are treated identically to the experimental group but are not exposed to the treatment
Independent Variable can be measured and value changes as required
Theory explanatory hypothesis for natural phenom that is supported with empirical data. viewed as a fact.
Biology study of living things
Species organisms that look alike and can produce fertile offspring
Metabolism energy comes from food,
Reproduction process by which organisms make more of their own kind
Experiment planned procedure to test an hypothesis
Science intellectuial activity, encompassing observation, description, experimentation, & explaination of natural phenomena; latin verb "to know"
scientific literacy general, fact based understanding of the basics of biology and other sciences
biology literacy ability to use process of scientific inquiry, communicate thoughts to others, integrate ideas
superstition irrational belief that actions that are not logically related to a course of events can influence its outcome
empirical knowledge based on experience and observations that are rational, testable, and repeatable
steps in scientific method make observations, formulate hypothesis, devise a testible prediction, conduct a critical experiment, draw conclusions, repeat, make revisions, publish
null hypothesis lack of relationship btwn 2 factors; easier to disapprove
critical experiment after formulating a hypothesis that generates a testable prediction
placebo pill that looks identical to the echinacea tablet but contained no echinacea
treatment experimental condition applied to the research subjects
experimental groups group of subjects exposed to particular treatment
variables characteristis of an experimental system that are subject to change
placebo effect responding to any treatment, need an appropriate control group
blind experimental design subjects do not know which treatments if any, they are receiving
double-blind experimental design neither subjects nor experimenter know which treatment a subject is receiving
randomized randomly assigned into experimental and control groups
independent variable created by the process observed and values cannot be controlled
statistics analytical and mathematical tools to help researchers gain understanding from the data they gather
positive correlation one variable increases, so does the other variable
pseudoscience scientific sounding claims not supported by trustwrothy scientific studies (dentist/sugarless gum example)
anecdotal observations concluding after one or few observations (autism example)
hierarchical organization atoms (molecules), cells, tissues, organs, organisms, populations, communities, ecosystems, biosphere
evolution change in genetic characteristics w/ population over time
biology scientific study of life
population group of like organism (same species) in a given area
community all the populations of all species living in a given area
ecosystem community plus the physical and chemical environment (soil, water, air)
biosphere region of earth and atmosphere that supports life from ocean bottom to atmosphere
ecology branch of biology that investigates interactions and relationships btwn organism and environment
two processes of any ecosystem depend on cycling nutrients and flow of energy
interdependencies of organisms energy of sun, photosynthesizers, organisms
producers plants produce food for themselves and other organisms
consumers organisms that eat plants and other organisms
prokaryotic before nucleus, no nucleus, bacteria
eukaryotic new or good nucleus, contains organelles, everything except bacteria
language of DNA contains 4 letters AGCT (adenine, guanine, cytosine, thymine
3 domains of life bacteria, archaea (ancient bacteria), eukarya
prokaryotes bacteria and archaea
eukarya - four kingdoms protista, plantae, fungi, animalia
taxonomy - kingdom to species kingdom, phylum, class, order, family, genus, species (KPCOFGS - King Phillip came over for green stamps)
natural selection unequal reproductive success, mechanism of evolution
adaptation product of natural selection
discovery science collecting data based on observations and measurements to better understand structures
hypothesis-based science scientific method
Created by: evroman
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