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GA EOCT BIO VOCAB
GA EOCT BIOLOGY VOCAB
| Term | Definition |
|---|---|
| homeostasis | an organisms regulation of its internal environment to maintain stable conditions |
| invertebrate | animal that doesn't have a backbone |
| vertebrate | animal with a backbone |
| active transport | A process that uses energy by cells to transport materials from a low to high concentration |
| cell wall | an organelle located outside the cell that provides support and protection |
| chloroplast | an organelle that contains chlorophyll in green plants and captures light energy from the sun and makes chemical energy |
| diffusion | random movement of particles from an area of high concentration to low concentration |
| endoplasmic reticulum | organelle in eukaryotic cells that is highly folded and can be either smooth or rough |
| mitochondrion | organelle that transforms energy in food molecules into ATP |
| nucleus | central organelle in eukaryotes that manages cellular functions and contains DNA |
| organelle | membrane bound structure within eukaryotic cells |
| osmosis | movement of water across a membrane depending on the concentration of solutes on each side of the membrane |
| ribosome | organelle in the cytoplasm where proteins are made |
| vacuole | organelle that is a fluid filled sac in plant cells for the storage of materials |
| binomial | two word system to name a species, the first word identifies the genus, the second describes the characteristic |
| class | taxonomic grouping of similar orders |
| eukaryote | unicellular or multicellular organism that contains a nucleus and membrane-bound organelles |
| Genus | First word of a two-part scientific name used to identify a group of similar species |
| kingdom | Taxonomic group of similar phylums |
| order | taxonomic grouping of similar families |
| phylum | taxonomic grouping of similar classes |
| prokaryote | unicellular organisms, such as bacteria, without a nucleus or membrane bound organelles |
| species | group of organisms that can breed and produce fertile offspring |
| allele | alternative form of a gene for each variation of a trait |
| chromosome | cell structure that carries genetic material and is copied and passed from generation to generation |
| crossing over | exchange of genetic info between nonsister chromatids |
| diploid | cell with 2 of each kind of chromosome |
| DNA replication | process in which DNA is copied before mitosis or meiosis |
| Dominant | an observed trait that masks the recessive |
| Gamete | male or female sex cells, sperm or eggs |
| Gene | a segment of DNA that controls the protein |
| Genotype | Letter representation of a DNA code |
| Haploid | a cell with one of each kind of chromosome |
| Heterozygous | different alleles for a trait |
| Homozygous | same alleles for a trait |
| Hybrid | an offspring formed by parents having diffent forms of a trait |
| Meiosis | type of cell division where a cell produces 4 gametes, each containing half the # of chromosomes as a parents cell (haploid) |
| Mitosis | type of cell division during which 2 identical daughter cells are formed with the same # of chromosomes |
| Mutation | a random error in a DNA sequence |
| Phenotype | how an organism looks |
| Recessive | a trait of an organism that is masked by a dominant trait |
| Trait | an inherited characteristic |
| nondisjunction | failure of homologous chromosomes to separate properly during meiosis, result is too many or too few chromosomes |
| Abiotic Factors | non-living parts of an environment, ex. temperature, light, soil |
| Adaptation | evolution of a structure, behavior, or process that enables an organism to survive better in its environment |
| autotroph | an organism that makes its own food through photosynthesis |
| biome | a group of ecosystems with the same climate, plant, and animal communities |
| biotic factors | living parts of an environment |
| decomposer | organism that breaks down dead organisms |
| ecosystem | interactions among populations in a community and their abiotic factors |
| food chain | simple model that shows how energy flows through an ecosystem |
| food web | a model that shows all possible feeding relationships in a community |
| habitat | where an organism lives |
| heterotroph | organism that eats other organisms for energy |
| parasitism | symbiotic relationship where one organism is harmed and the other is helped |
| population | a group of organisms of one species that can produce fertile offspring |