The Definition of Life in Biology

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Questions and Answers

What is a common characteristic shared by all living organisms according to the text?

  • Ability to change physical appearance
  • Ability to create artificial environments
  • Ability to produce and use energy (correct)
  • Ability to communicate with other organisms

Which characteristic distinguishes living from nonliving organisms as mentioned in the text?

  • Ability to withstand extreme temperatures
  • Ability to conduct photosynthesis
  • Ability to reproduce and develop (correct)
  • Ability to produce artificial light

What characteristic allows organisms to adapt to changes in their environment according to the text?

  • Ability to predict natural disasters
  • Ability to resist all diseases
  • Ability to control the weather
  • Ability to learn from experience (correct)

What is a key characteristic that helps living organisms respond to their environment based on the text?

<p>Ability to sense and react to stimuli (C)</p> Signup and view all the answers

What is the smallest unit of life in multicellular organisms?

<p>Cell (B)</p> Signup and view all the answers

Which group of cells performs a specific function?

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

What is composed of millions of nerve cells that transmit signals to all parts of the body?

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

Which organ receives signals from nerves?

<p>Brain (D)</p> Signup and view all the answers

In which system does the brain send messages to the spinal cord?

<p>Nervous system (B)</p> Signup and view all the answers

What term is used to describe an individual that is a collection of multiple organ systems?

<p>Organism (A)</p> Signup and view all the answers

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Study Notes

Characteristics of Living Organisms

  • All living organisms share the characteristic of being able to respond to their environment.
  • The ability to respond to stimuli distinguishes living from nonliving organisms.
  • Organisms adapt to changes in their environment through their ability to respond to stimuli.

Cellular Structure

  • The smallest unit of life in multicellular organisms is the cell.
  • A group of cells that perform a specific function is called a tissue.

Nervous System

  • The nervous system is composed of millions of nerve cells that transmit signals to all parts of the body.
  • The brain receives signals from nerves and sends messages to the spinal cord through the central nervous system.
  • The brain sends messages to the spinal cord through the spinal cord system.

Organism Composition

  • An individual that is a collection of multiple organ systems is called an organism.

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