Biology: The Study of Life

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Questions and Answers

What unifying theme ties together the field of biology?

  • Evolution
  • Energy processing
  • Regulation of internal environments
  • All of the above (correct)

Which major theme explains the unity and diversity of life?

  • Evolution (correct)
  • Cell structure
  • Energy processing
  • Internal environment regulation

At what levels of organization can biologists study life?

  • From molecular biology to population evolution (correct)
  • Only at the cellular level
  • From internal regulation to external adaptation
  • Only at the molecular level

What is the primary tool that biologists use to make observations and form conclusions?

<p>The scientific method (B)</p> Signup and view all the answers

When did life on Earth emerge?

<p>3.7 billion years ago (D)</p> Signup and view all the answers

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