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General Biology: Evolution and Themes of Biology

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이 집합의 용어 (20)

  • What are the five unifying themes of biology?
    Organization, Energy and Matter, Interactions, Evolution, and Information.
  • What are emergent properties in biology?
    New properties that arise from the arrangement and interactions of parts as complexity increases, such as water's properties emerging from hydrogen and oxygen atoms.
  • What is the basic unit of life that can perform all activities required for life?
    The cell.
  • How do prokaryotic and eukaryotic cells differ?
    Prokaryotic cells lack a nucleus and membrane-enclosed organelles, while eukaryotic cells have a nucleus and membrane-bound organelles.
  • What is contained within chromosomes in cells?
    Chromosomes contain genetic material in the form of DNA, which consists of thousands of genes.
  • What is gene expression according to the central dogma of biology?
    The process where DNA is transcribed into mRNA, which is then translated into proteins.
  • What roles do producers and consumers play in energy transfer?
    Producers convert sunlight into chemical energy; consumers use this chemical energy to do work.
  • Why are interactions important in biological systems?
    Interactions occur at all levels, from molecules within cells to organisms within ecosystems, affecting function and survival.
  • What is feedback regulation in biological systems?
    A process where the output or product of a system regulates its own production, maintaining homeostasis.
  • What is the core theme of biology that explains unity and diversity of life?
    Evolution, the concept that living organisms are modified descendants of common ancestors.
  • What did Charles Darwin propose about species adaptation?
    Species accumulate differences over time through descent with modification, adapting to different environments.
  • What is natural selection?
    The mechanism where individuals with advantageous traits survive and reproduce more, leading to evolutionary change.
  • What evidence supports the unity of life?
    Common DNA, similar cell structures, and shared anatomical features among diverse organisms.
  • How does energy flow through an ecosystem?
    Energy flows from sunlight to producers, then to consumers, with heat lost at each step; chemicals cycle through the ecosystem.
  • What is negative feedback in biological regulation?
    A process where a change triggers a response that counteracts the initial change to maintain balance, like insulin regulating blood glucose.
  • What levels of biological organization are shown from molecules to the biosphere?
    Molecules, organelles, cells, tissues, organs, organisms, populations, communities, ecosystems, and the biosphere.
  • What domains of life exist?
    Domain Bacteria, Domain Archaea, and Domain Eukarya.
  • What kingdoms are included in Domain Eukarya?
    Kingdoms Animalia, Plantae, Fungi, and Protists.
  • What is the role of DNA in cells?
    DNA stores genetic information used to make proteins through transcription and translation.
  • How do scientists use patterns to do science?
    By observing, hypothesizing, testing, and refining explanations based on patterns and evidence.