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20 Cards in this Set
- Front
- Back
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equilibrium
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a state in which opposing forces in a system are equally balenced or stable.
ex: a even see saw |
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Homeostasis
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When the bodys internal enviroment is kept stable in spite of external changes.
Ex: things staying the same when the wheather changes |
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Negative feedback
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A process in which a system is turned off by the condition it produces.
Ex: regulation of temperature |
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Hormone
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chemical released by one or more cells that affects cells in other parts of the organism.
Ex: in the description |
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Turgor preasure
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The force of water against the cell wall of a plant cell.
Ex: water pushing against a cell wall |
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Osmosis
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diffusion of molecules through a semipermeable membrane from a place of higher concentration to a place of lower concentration until the concentration on both sides is equal
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Diffusion
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Process by which molecules move from a highly concentrated area to a lower area.
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Punnett Square
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A tool used to help predict the results of genetic crosses.
Ex: used if your trying to figure out how genes work |
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Trait
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A characteristic that an organism can pass on through offspring
Ex: kids getting parents traits |
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Heredity
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The passing of traits from parents to offspring
Ex: kids getting same eye color as parents |
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Genetics
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the branch of biology that studies heredity and variation in organisms
Ex: punnatt square |
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Purebread
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An organism that always produces offspring with the same form of a trait as itself
Ex: eye color |
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Genes
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A segment of DNA on a chromosome that codes for a specific trait
Ex: the swirly thing DNA |
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Dominant allel
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An allel whose traits always shows up in an organism present
Ex: A organism that has a present allel |
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Resesive allel
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An allel whose traits always dont show up in an organism
Ex: an organism with no allel |
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Hybrid
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An organism that has two different allels as a trait
Ex: not the same allel |
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Phenotype
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An organisms visable appearance, or traits
Ex: eyes |
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Genotype
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An organisms genetic make up, or allel combinations
Ex: traits |
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Heterozygous
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Having two different allels for a trait
Ex: seperate allels |
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Homozygous
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Having two identical allels for a trait
Ex: same alllels |
