Lesson Worksheet: Sensitivity to the Environment Science

In this worksheet, we will practice describing structures the human body has that respond to external stimuli and explaining how information is transmitted to the brain and processed.


Which of the following is not a sense organ?

  • AEar
  • BTongue
  • CSkin
  • DNose
  • ELung


What specialized cell passes electrical impulses from sense organs to the brain?

  • ACiliated cell
  • BMuscle
  • CNeuron
  • DRed blood cell


Which of the following is not an example of how the brain processes and responds to sensory information?

  • ASleeping
  • BSpeaking
  • CMaking memories
  • DMoving


In which sense organ do you find photoreceptor cells?

  • AThe eye
  • BThe tongue
  • CThe ear
  • DThe skin
  • EThe nose


What would happen if the receptor cells that detect mechanical vibrations are damaged?

  • AYou would be unable to detect temperature changes.
  • BYou would be unable to hear.
  • CYou would be unable to see.
  • DYou would be unable to taste.
  • EYou would be unable to smell.


Electrical impulses from sensory pain receptors in the skin travel at 0.5 m/s. They take 1.5 s to travel from the skin to the brain. What is the distance from the receptor cell in the skin to the brain, in meters?Give your answer to two decimal places.


The diagram shows a taste bud on part of the tongue.

Which cell (A, B, C, or D) is a receptor cell?

  • ACell B
  • BCell A
  • CCell C
  • DCell D

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