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28 Cards in this Set
- Front
- Back
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Subsets of Molecules
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Nucleic Acids, Proteins, Carbohydrates, Lipids
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DNA (deoxyribonucleic acid)
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Signature molecule of life, molecule of inheritance, directs assembly of amino acids
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Inheritance
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Acquisition of traits by way of transmission of DNA from parent to offspring
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Reproduction
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Mechanism by which an orgnism produces offspring, follows instructions of DNA
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Energy
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Capacity to do work
*nothing lives without energy |
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Metabolism
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Reactions by which cells acquire and use energy to grow, survive, and reproduce
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Sensing & Responding
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Organisms sense changes in environment and respond to them, allows maintenance of homeostasis
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Stimuli
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Receptors that detect specific forms of energy
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Levels of Organization
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Subatomic particles, atoms, molecules... Cell... Multicelled organisms... Population... Community... Ecosystem... Biosphere
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Producers
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Things that make their own food (plants, for ex.)
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Consumers
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Depend on energy stored in tissues of producers
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Decomposers
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Break down reains and wastes
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Energy Flow
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Starts with sun, transfers from one organism to another, and eventually all energy flows back to the environment
*Flows in one direction* |
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ALL ORGANISMS...
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-composed of one or more cells
-composed of the same substances -engage in metabolism -maintain homeostasis -sense and respond to environment -have capacity to reproduce based on DNA instructions |
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Classification of Organisms
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an attempt to organize diversity
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Scientific Naming
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-Developed by Linnaeus
-GENUS.. first name -Species.. second name (species within a genus) |
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Six Kingdoms
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Archaebacteria, Eubacteria, Protista, Fungi, Plantae, Animalia
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Archaebacteria
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-Anaerobic cells
-Prokaryotic |
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Eubacteria
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-Bacteria
-Prokaryotic |
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Protista
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-Single and Multicelled
-Eukaryotic |
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Fungi
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-Multicelled
-Decomposers -Eukaryotic |
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Plantae
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-Photosynthetic
-Eukaryotic |
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Animalia
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-Consumers
-Eukaryotic |
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Prokaryotes
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-single celled
-no nucleus or organelles -smaller, less complex |
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Mutation
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Molecular change in DNA, may be harmful, harmless, or beneficial
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Adaptive Trait
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Trait that gives the individual an advantage in survival or reproduction
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Evolution
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Genetically based change in a line of descent over time
-populations evolve, not individuals |
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Natural Selection
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..(:
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