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30 Cards in this Set
- Front
- Back
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cohesion
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attraction between same molecules, causes molecules to be drawn inward
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adhesion
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attraction between different molecules, also known as capillary action
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mixtures
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substances in which 2 or more atoms or compounds are physically mixed together
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solution
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a mixture in which substances are uniformly distributed to one another
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solute
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substance that is being dissolved
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solvent
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substance doing the dissolving
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isomer
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2 molecules having the same chemical formula but have different shapes
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disaccharide
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2 monomers together to form double sugars
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polysaccharide
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complex molecule comprised of three or more monomers
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lipids
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large, non-polar organic molecules that do not dissolve in water
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What is science?
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An organized way of using evidence to learn about the natural world.
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What is a hypothesis?
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A proposed scientific explanation for a set of observations.
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Dependent Variable
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factor in an experiment that a scientist wants to observe which may change in response to the independent variable
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Independent Variable
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factor in an experiment that a scientist purposefully changes
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When a variable is kept unchanged in an experiment it is said to be...
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controlled
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What is a controlled experiment?
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A test of the effect of a single variable by changing it while keeping all other variables the same.
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What are variables in an experiment?
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Factors that can change.
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What are the characteristics of life?
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Respond, Adapt, Reproduce, Energy, Homeostasis, Organization, Growth and Development
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React/Respond
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respond to stimuli from enviorment
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Adapt/Evolve
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Change over time.
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Adaptation
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is any structure, behavior, or chemical an organism has or does that allow it to survive better
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Sexual Reproduction
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production of genetically different offspring
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Asexual Reproduction
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offspring that are generally identical to each other and the parent
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metabolism
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sum of all chemical reactions in an organism/cell
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food chain
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primary produces (plants), primary consumers (mice), secondary consumers (owls), decomposers (bacteria)
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homeostasis
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maintaining an internal balance
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what is the basic unit of structure and function of living things?
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cells
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organization
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atoms, molecules, organelles, cells, tissues, organs, organ systems, organism, populations, communities, ecosystems, biosphere
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Growth
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addition of mass
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development
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changes that take place in an organism during its lifetime
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