Worksheet: Principles of Homeostasis

In this worksheet, we will practice describing the human body's methods of maintaining constant internal environments.

Q1:

What key term describes a detectable change in an organism’s internal or external environment?

  • AHomeostasis
  • BResponse
  • CVariable
  • DReceptor
  • EStimulus

Q2:

If internal conditions are not correctly regulated by homeostasis, this can result in negative effects.

Complete the sentence: A failure to regulate water content can lead to cells and the organism becoming .

  • Acontracting, dehydrated
  • Bmultiplying, thirsty
  • Cshrinking, dehydrated
  • Ddrying, tired

Q3:

Complete the following sentence:

A failure to regulate blood glucose concentration could result in reduced cellular and, therefore, a reduction in needed for key processes.

  • Arespiration, energy
  • Bdigestion, water
  • Cdigestion, energy
  • Drespiration, water

Q4:

If homeostasis does not control body functions properly, it can denature the enzymes required for key biological reactions. Which of the following conditions is most likely to have not been kept constant for this to occur?

  • AWater content
  • BBlood glucose concentration
  • CMineral ion concentration
  • DCore body temperature

Q5:

Which of the following conditions in the body is not directly regulated by homeostasis?

  • ABlood glucose concentration
  • BSkin color
  • CWater content
  • DCore body temperature

Q6:

What is homeostasis?

  • AHomeostasis is the maintenance of physical characteristics.
  • BHomeostasis is the maintenance of constant genetic characteristics.
  • CHomeostasis is the difference between the internal and the external environments of an organism.
  • DHomeostasis is the maintenance of a constant internal environment.

Q7:

Which of the following statements about homeostasis is correct?

  • AHomeostasis is an automatic process that does not require conscious control.
  • BHomeostasis requires complete and regular conscious control.
  • CHomeostasis is a semiautomatic process that requires some conscious control.

Q8:

What is the role of coordination centers in a homeostatic control mechanism?

  • ATo receive and process information about a change from the optimum conditions
  • BTo detect changes in the internal or external environment
  • CTo transmit impulses across central nervous systems
  • DTo bring about responses to a detected change

Q9:

The diagram shows the basic process of how homeostasis works to counteract changes in the human body.

What key structure is represented by label 1?

  • AEffectors
  • BReceptors
  • CStimulus
  • DCoordination center

What key structure is represented by label 2?

  • AEffectors
  • BReceptors
  • CCoordination center
  • DStimulus

Q10:

What is the role of receptors in a homeostatic control mechanism?

  • ATo detect changes in the internal or external environment
  • BTo bring about responses to a detected change
  • CTo signal to an effector to respond to a stimulus
  • DTo transmit impulses across the central nervous system

Q11:

What is the role of effectors in a homeostatic control mechanism?

  • ATo detect changes in the internal or external environment
  • BTo bring about responses to a detected change
  • CTo receive and process information about a change from the optimum conditions
  • DTo transmit impulses across the central nervous system

Nagwa uses cookies to ensure you get the best experience on our website. Learn more about our Privacy Policy.