Bio Ch1

The flashcards below were created by user dannystanny01 on FreezingBlue Flashcards.

  1. Define Biology
    The science of life (the study of living things)
  2. What seven characteristics do all living systems share?
    • 1. Cellular Organization
    • 2. Ordered Complexity
    • 3. Sensitivity
    • 4. Growth, Development, and reproduction
    • 5. Energy Utilization
    • 6. Homeostasis
    • 7. Evolutionary Adaptation
  3. The fundamental elements of matter
  4. When atoms are clustered together
  5. Complex biological molecules assembled into tiny structures
  6. The membrane-bounded units that contains organelles and are the basic unit of life
  7. The three levels of organization exhibited in cells of complex multicellular organisms
    • Tissues - Group of similar cells that act as a functional unit
    • Organs - Body structures composed of several different tissues that act as a structural and functional unit.
    • Organ Systems - Such as the nervous system. Organs grouped together
  8. The 5 categories of hierarchical organization of living things
    • 1. The cellular level
    • 2.The organismal level
    • 3. The population level
    • 4. The ecosystem level
    • 5.The Biosphere
  9. A body of interconnected concepts supported by scientific reasoning and experimental evidence, that explains the facts in some area of study.
    What is a Theory
  10. Evolution
    Changes in allele frequencies in a population over time
  11. 5 mechanisms of Evolution
    • 1. Mutation
    • 2. Genetic Drift
    • 3. Gene Flow
    • 4. Meiotic drive
    • 5. Natural Selection
  12. Natural Selection
    A differential in the fitness of individuals and lineages within an environment.
  13. 1. Fitness - Ability to survive and reproduce (results in organisms having adaptations)
    2. Adaptation - A trait with a functional role that evolves and is maintained in a population
    2 aspects of Natural Selection
  14. 3 most famous scientists for the theory of Evolution
    1. Malthus - Wrote An essay on the principles of population and came up with "demographics", the idea that populations don't increase exponentially over time.

    2. Sir Charles Lyell - Wrote Principles of Geology. Famous for uniformatarianism - the earth was shaped by slow moving forces that are still in operation today

    3. Darwin - Came up with the 4 principles of Natural Selection
  15. What are Darwins 4 principles of natural selection
    • 1. Overproduction of offspring - More offspring are produced than what the environment can sustain.
    • 2. Variation of Traits
    • 3. At least some variation is heritable
    • 4. Organisms with variations or adaptations that increase fitness will pass genes into the next generation
Card Set
Bio Ch1
Bio Ch1
Show Answers