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Chapter 1 Glencoe Life Science
Test study
37
Science
6th Grade
12/01/2011

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Term
Scientific Method
Definition
procedures used to solve problems and answer questions.
Term
Steps to the Scientific Method
Definition
Stating the problem
gathering information
forming a hypothesis
testing they hypothesis with an experiment
analyzing data
drawing conclusions
Term
variable
Definition
Something in an experiment that can change.
Term
stimulus
Definition
anything that causes some change in an organism is a stimulus.
Term
Carolus Linnaeus
Definition
Developed the present day system of clasification.
Term
Carolus Linnaeus birth name
Definition
Carl Von Linne
Term
What did Carolus Linnaeus develop?
Definition
pylogeny -
genus/group
species/kind
Term
When did Linnaeus classify plants and animals? (year)
Definition
1753 - plants
1758 - animals
Term
homeostasis
Definition
ability of an organism to keep proper internal condition no matter what external stimuli are occuring.
Term
Stanley Miller & Harold Urey
Definition
Sent electrical currents through a mixture of gases like those thought to be in Earth's early atmosphere. When the gases cooled they condensed to form an oceanlike liquid that contained materials such a amino acids, found in present day cells.
Term
What year did Miller & Urey conduct their famous experiment?
Definition
1953
Term
cell
Definition
smallest unit of an organism that can carry on life functions
Term
cell
Definition
smallest unit of an organism that can carry on life functions
Term
law
Definition
statement about how things work in nature that seems to be true consistently
Term
photosynthesis
Definition
process by which plants and many other producers use light energy from the sun to make sugars, which can be used as food
Term
binomial nomenclature
Definition
two-word naming system that gives all organisms their scientific name
Term
control
Definition
standard to which the outcome of a test is compared
Term
classification
Definition
Act or arranging into groups
Term
Louis Pasteur
Definition
Disproved Spontaneous Generation by boiling broth in s-necked flasks that were open to the air. The broth became cloudy only when a flask was tilted and the broth was exposed to dust in the s-neck.
Term
What year did Pasteur disprove Spontaneous Generation?
Definition
1859
Term
theory
Definition
Explanation of things or events based on scientific knowledge resulting from may observations and experiments.
Term
hypothesis
Definition
prediction that can be tested
Term
Alexander I. Oparin
Definition
Hypothesized that energy from the sun, lightning, and Earth's heat triggered chemical reactions early in Earth's history. The newly formed molecules washed into Earth's ancient oceans and became a part of what is often called primordial soup.
Term
What year did Oparin make his hypothesis?
Definition
1924
Term
Lazzaro Spallanzani
Definition
Boiled broth in sealed flasks - hotter than Needham and longer. Only the ones he opened became cloudy with contamination. This disproved Spontaneous Generation..
Term
What year did Spallanzani do his experiment?
Definition
1768
Term
John Needham
Definition
Heated broth in sealed flasks. Mistakenly concluded that microorganisms developed spontaneously from broth.
Term
What year did Needham conduct his experiment?
Definition
1745
Term
Francesco Redi
Definition
put decaying meat in jars. Covered half. Concluded fly eggs (maggots) did not come from meat. Disproved Spontaneous Generation.
Term
What year did Redi conduct his experiment?
Definition
1668
Term
Kingdom
Definition
First and Largest category used to classify organisms
Term
adaptation
Definition
any variation that makes an organism better suited to its environment
Term
phylogeny
Definition
evolutionary history of an organism; used today to group organisms into six kingdoms.
Term
organisms
Definition
any living things that are made of cells, use energy, reproduce, respond, and grow and develop.
Term
Spontaneous Generation
Definition
idea that living things come from non living things
Term
genus
Definition
first word of the tow word scientific name used to identify a group of similar species
Term
biogenesis
Definition
theory that living things come only from other living things
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