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28 Cards in this Set

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