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Questions and Answers

What has made the definition of viruses particularly difficult?

  • They replicate only in host cells (correct)
  • They exist in harsh environments
  • They have souls and embody both form and matter
  • They are composed of four eternal elements

What distinguishes matter with biological processes from matter that does not?

  • Existence in harsh environments
  • Ability to replicate in host cells
  • Capacity for homeostasis, organisation, metabolism, growth, adaptation, response to stimuli, and reproduction (correct)
  • Presence of water and air

Where does life exist all over the Earth?

  • In philosophical definitions
  • In ancient times
  • Only in extremophiles
  • Air, water, and soil (correct)

When did life originate?

<p>At least 3.5 billion years ago (D)</p> Signup and view all the answers

What did Empedocles's materialism theory assert about life?

<p>It was composed of four eternal elements (D)</p> Signup and view all the answers

What is the speed of light in vacuum?

<p>299792458 m/s (B)</p> Signup and view all the answers

What is the range of wavelengths for visible light?

<p>400–700 nanometres (nm) (B)</p> Signup and view all the answers

What are the primary properties of light?

<p>Intensity, propagation direction, frequency or wavelength spectrum, and polarization (D)</p> Signup and view all the answers

What represents the quanta of electromagnetic field?

<p>Photons (C)</p> Signup and view all the answers

In physics, how is the term 'light' defined?

<p>Electromagnetic radiation of any wavelength, whether visible or not (C)</p> Signup and view all the answers
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