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Science Final

QuestionAnswer
What causes evolution? Random mutations of genes
What shows the relative age of fossils? stratigraphic dating
What shows exact age of fossils? carbon dating
----- cycles and ----- flows. matter. energy
----- flows and ----- cycles energy, matter
Mutualism both organisms benefit from the relationship
Commensalism one organism benefits the other is not affected
Parasitism one organism gets a benefit the other is harmed but typically not killed
Pred/prey one organism kills and eats the other
Competition both organisms compete for the same resource
What is a independent variable the one that you are changing on purpose
What is the dependent variable the one that you are measuring
What is the constant variable one that you are keeping the same to make the experiment fair
Chloroplasts the structure that used energy to turn carbon dioxide and water into glucose(food/sugar) - found only in plants
Mitochondria the structure that converts food into energy
Photosynthesis needs Carbon dioxide, water and energy
Cellular respiration needs Oxygen and glucose (food and sugar)
Circulatory system Moves things throughout the body
Respiratory system Gas exchange
Digestive system intake of nutrients
Blood carries O2, CO2 and nutrients
A cell is enclosed by a Membrane
What is the smallest structural unit of life? Cells
What is the Germ Theory of Disease Proposes that infectious disease is caused by microscopic organisms that invade the body
Cell Membrane surrounds and protects the cells allows materials to pass into and out of the cell
Nucleus directs all cell activities and contains the cell's genetic material for making new cells
Levels of the ecosystem in order from least to greatest. Organism, Population, Community, Ecosystem
What is mechanical digestion Breaks food into smaller pieces so it can be chemically digested more quickly
What is chemical digestion Breaks food pieces into basic molecules that can pass into the bloodstream
How do fossils show evolutionary relationships? can show the pattern of evolution over time allowing scientist to reconstruct the evolutionary relationships over time
How do living orgs show evolutionary relationships? similar structures in different organisms can provide evidence of common ancestry.
How do Embryos show evolutionary relationships? as some embryos develop they show traits that are not present in the adult. By studying those patterns scientist can develop cause-and-effect relationships about evolutionary relationships
Created by: user-1980407
 

 



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