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General Biology Quiz 1 Study Flashcards

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  • How does evolution impact the lives of all humans?

    Evolution is the process of change that has transformed life on Earth from its earliest forms to the vast diversity of organisms today.
  • Why do all humans belong to the domain Eukarya?
    Humans belong to Eukarya because their cells have a nucleus and membrane-bound organelles.
  • What determines an organism's structures and functions?
    An organism's structures and functions are determined by its genes, which provide the instructions for building proteins.
  • Describe the relationship between structure and function in biology.
    Structure is the shape, form, or arrangement of a biological part, and function is what the part performs. Structures are often adapted to perform their functions efficiently.
  • What is the role of proteins in organisms?
    Proteins are molecules that perform many functions in organisms, including catalyzing reactions and providing structural support.
  • How do dynamics of molecules and energy relate to living organisms?
    Living organisms use molecules and energy to carry out life processes, including growth, reproduction, and maintaining homeostasis.
  • What is the flow of energy in ecosystems?
    Energy flows in one direction in ecosystems, from sunlight to producers to consumers and decomposers.
  • What is natural selection?
    Natural selection is the process by which individuals with traits that help them survive and reproduce are more likely to pass those traits to offspring.
  • What is a controlled experiment?
    A controlled experiment tests the effect of one variable by keeping all other variables constant and comparing an experimental group to a control group.
  • What is a hypothesis and how is it tested?
    A hypothesis is a testable explanation that can be tested by observation and experimentation.
  • What are emergent properties?
    Emergent properties are new traits that arise from the interaction of components in a system, not predictable from the components alone.
  • Describe the levels of biological organization from molecules to biosphere.
    Levels include molecules, organelles, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystems, and the biosphere.
  • What is the difference between a hypothesis and a theory?
    A hypothesis is a testable explanation; a theory is a well-supported broad explanation for observations.
  • What is the role of DNA in biological systems?
    DNA contains the instructions for building proteins and is passed from parents to offspring.
  • How do organisms maintain homeostasis?
    Organisms regulate their internal environment to maintain stable conditions necessary for life.
  • What is the importance of reproduction in living organisms?
    Reproduction allows organisms to produce offspring, ensuring the continuation of their species.
  • How do scientists use observations and experiments?
    Scientists use observations and experiments to test hypotheses and gather evidence.
  • What is the significance of adaptation in evolution?
    Adaptations are traits that improve an organism's ability to survive and reproduce in its environment.
  • What is the role of decomposers in ecosystems?
    Decomposers break down dead organisms and recycle nutrients back into the ecosystem.
  • How do populations and communities differ?
    A population is a group of individuals of the same species; a community includes all populations living together in an area.