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36 Cards in this Set
- Front
- Back
Ribosomes |
site of protein synthesis in cytoplasm. |
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Nucleolus |
produces ribosomes inside the nucleus |
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ER |
site of ribosome attachment; can be smooth or rough |
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cell membrane |
projections that allow the cell to move or to move substances along the surface of the cell |
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Seven properties of all living things |
1. Order 2. Regulation 3. Energy processing 4. Growth and development 5. Reproduction 6. Response to environment 7. Evolutionary adaptation |
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tissue |
group of cells functioning together to carry out a physiologic process. Tissues get organized into organs. |
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Organs |
More than one tissue working together to carry out a physiologic process. Organs get organized into organ systems. |
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Organ Systems |
multiple organs working together. |
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Cellular Organization |
Atoms>>Molecules>>Macromolecules>>Organelles>>Cell |
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Organismal Organization |
Cell>>Tissue>>Organ>>Organ System>>Organism |
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Populational Organization |
Organism>>Population>>Species>>Community>>Ecosystem |
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Organism |
An individual living thing consisting of one or more things. Within this living thing you have larger levels of organizations. |
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A populations |
All the individuals of one species living in a specific geographic area. |
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Community |
All individuals of all the species living in a specific geographic area. |
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Ecosystem |
All the communities plus non-living components of a specific geographic area. Your intestinal system is an ecosystem. |
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Emergent properties |
All living things exhibit. Properties not present at simpler levels of organization. The whole is greater than the sum of its parts. |
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Reductionism |
The reduction of complex systems to simpler components that are more manageable to study |
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Systems Biology |
A system is a combination of components that function together. |
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Reductionism vs. Systems Biology |
Reductionism would say take drugs to combat problem. Systems biology would say, we must look at how the drug will affect other organs. |
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Why talk about evolution? |
~Makes sense of everything we know about biology ~Organisms are modified decedents of common ancestors. ~Explains patterns of unity and diversity among living organisms. ~Explains similar traits among organisms by decent from common ancestors. ~ differences among organisms are explained by the accumulation of heritable changes. |
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Taxonomy |
Branch of biology that names and classifies species into groups of increasing breadth. Organize/label Domains followed by kingdoms are the broadest units of classification. |
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The Three Domains |
Domain Bacteria, Domain Archaea, and Domain Eukarya. ~Bacteria (oldest lineage) and Archaea compose prokaryotes. ~Domain Eukarya includes all eukaryotic organisms. |
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Prokaryotes |
Most are single celled, microscopic, and have no nucleus. |
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Domain Eukarya |
Includes three multicellular organisms. 1. Plants which produce their own food through photosynthesis. 2. Fungi which absorb nutrients 3. Animals which ingest their own food |
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Unity Among Organisms |
DNA is the universal genetic language common to all organisms. Unity is evident in many features of a cell structure (cell membranes). |
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Theory of Natural Selection |
Darwin 1859~Published The Origin of Species by Means of Natural Selection. ~Species showed evidence of "decent with modification" ~Natural selection is the mechanism behind decent with modification Darwin's Theory explains the duality of unity and diversity. Alfred Russel Wallace |
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Darwins Observations |
1. Individuals in population vary in traits, many of which are heritable. 2. More offspring are produced than can survive, and competition is inevitable. 3. Species generally suit their environment |
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Darwins Inferences |
Individuals that are best suited to their environment are more likely to survive and reproduceOver time, more individuals in a population will have the advantageous traitsEvolution occurs as the unequal reproductive success of individualsIn other words, the environment “selects” for the propagation of beneficial traitsDarwin called this process natural selection |
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How does the use of antibiotics lead to the evolution of antibiotic resistance? |
Sick bacteria>>Antibiotics kill off all sensitive cells>>One bad cell survives and reproduces Antibiotics shed cell wall |
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Scientific Method 6 things |
Question>>Hypothesis>>Collect Data>>Interpret Results & Review Hypothesis>>Peer Review>>Publish Findings |
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Theory |
Hypothesis that has been repeatedly tested and supported by overwhelming evidence. |
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Systems Biology |
The exploration of the network of interactions that underlie the emergent properties of a system. |
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Gene |
A section of DNA that encodes the information necessary to build a molecule synthesized within the cell. |
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Energy usually enters an ecosystem as ________ and exits as _________. |
light, heat |
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deductive reasoning |
Reasoning from a general premise to a specific result we should expect if the premises are true. |
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In a controlled experiment, the factor being measured that is predicted to be affected by the factor manipulated by the researchers. |
Dependent variable |