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22 Cards in this Set
- Front
- Back
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What is the purpose of the scientific method? |
it is used as a general guide to gather data and interpret results of an experiment |
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List the steps of the scientific method |
Observation Recognize problem Develop hypothesis Make a prediction that can be tested Make further observations Perform experiment Interpret results Draw conclusions to satisfy/falsify the hypothesis |
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Define hypothesis and give requirments of a good hyposthesis. |
testable statement about the nature of an observation or relationship good hypothesis has reasonably consistent with well established facts generates testable predictions test results she be repeatable by independents falsifiable |
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What is a theory? |
ideas or set of ideas intended to explain facts |
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Define biology |
the science of life |
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Explain the concept of cell theory |
all living cells have common origin which is provided by the similarities in there structures and molecules |
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State the cell theory |
the scientfic theory which states that the cell is the basic unit of life of which all living things are composed and that all cells are derived from preexisting cells |
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List the two cell types and give an example of each |
Prokaryotic (bacteria and archaea) Eukaryotic (all other organisms; humans) |
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What characteristics seperate the two cell types |
Prokaryotic do not have a nucleaus or other memabrane in the organelles |
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What does the biosphere include |
all systems in the earth with living oranisms; atmosphere, hydrosphere, and lithosphere |
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Define biological growth |
increase in the size of individual cells or the number of cells or both in an organism |
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What is the difference between asexual and sexual reproduction? |
Asexual reproduction has offspring which are typically identical with the parent, except in size sexual reproduction involves the fusion of sperm and egg, genes typically by two parents, and variation of offspring |
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What are some examples of homestasis |
an example of homestasis is the regulation of glucose levels in the blood of complex animals; your cells require a constant supply of glucose molecules which they break down to obtain energy |
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Why must living organisms be able to perform homestasis? |
if one does not have homestasis then the chemical reactions in the organisms would not be able to grow and repair and convert energy to usable forms |
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Define evolution and at what level does it operate? |
evolution is the process by which populations of organisms change over time; it operates at the gene level which involves passing genes for new traits from one generation to another creating a new population |
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State Darwin's theory of natural selection? |
Darwin's theory of Natural Selection is tendancy of organisms that have favorable adaptations to their environment to survive and become the parents of the next generation. Evolution occurs when natural selection results in changes in allele frequencies in population |
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The science of classifying and naming organisms |
Taxonomy |
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The broadest of the taxonomic groups is |
Domain |
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How is a principle different from a belief? |
a principle is a stament of a rule that explains how something works; it has withstood scientific testing a belief is an idea that has not been tested and proven true |
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List the 6 kingdoms and give an example of each |
Archaea (i.e. Methanosarcina mazei) Bacteria (i.e. Bacillus anthracis) Animalia (i.e. tiger) Fungi (mushroom) Plantae (white oak) Protists (tetrahynena) |
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Define speciation |
evolution of a new species |
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Describe the role of the reproductive isolating mechanisms |
to prevent interbreeding among species, as a result each species gene pool is isolated from those of other species |
