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25 Cards in this Set
- Front
- Back
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Define Abiotic
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Non-biological, often in reference to physcial factors in the enviroment.
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Define Autotroph
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an organism that produces is own
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Define Biotic
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Biological often to living components of the enviroment
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Cell Cycle
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The sequence of events during which a cell expeiriences growth followed by nuclear division and cytokinesis
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Endosymbiont Hypothesis
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the proposal that the membranous organelles of eukaryotic cells may have originated from symbiotic relationships between two prokaryotic cells
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Endosymbiosis
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a symbiotic assocaition in which one symbiont or partner lives inside the other
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Energy
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The capacity to do work
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Genome
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the entire collection of DNA sequence for a given organism
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Host
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A species that is fed upon by a parasite
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Macromolecule
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A very large molecule assembled by the covalent linkage of smaller subunit molecules
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Monomer
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Identical or nearly identical subunits that link together to form polymers during polymerization
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Morphology
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The form or shape of an organism or of part of an organism
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Nucleiod
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the central region of a prokaryotic cell with no boundary membrane separating if from the cytoplasm, where DNA replication and RNA transcription occur
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Oxidation
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the removal of electrons from a substance
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Protobiont
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the term given to a group of abiotically produced organic molecules that are surrounded by membrane or membrane like structure
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Purine
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a type of nitrogenous base with two carbon-nitrogen rings
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pyrimidine
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A type of nitrogenous base with one corbon-nitrogen ring
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Radiometric Dating |
A dating method that uses measurements of certain radioactive isotopes to calculate the absolute ages in years of rocks and minerals
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Reduction
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the addition of electrons to a substance
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Ribozyme
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An RNA based catalyst that is part of the biochemical machinery of all cells
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Selectively Permeable
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Membranes that selectively all, impede, or block the passage of atoms and molecules
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Stability
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The ability of a community to maintain its species composition and relative abundances when enviromental disturbances eliminate some species from the community
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Stomatolite
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Fossilized remains of ancient cyanobacterial mats that carried out photosynthesis by the water splitting reaction
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Symbiosis
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An interspacific interaction in which ecological relations of two or more species are intimatly tied together
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tRNA
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the RNA that brings Amino acids to the ribosomes for addition to the polypetide chain |
