Integration, Control & Coordination

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1. What is an exogenous biological rhythm?

  • Generated by the internal environment, requires a pacemaker
  • Generated by the external environment
  • Generated by the external environment, requires a pacemaker
  • Generated by the internal environment
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Other questions in this quiz

2. How do clock genes switch off transcription?

  • Accumulate in suprachiasmatic nucleus neurones.
  • Stop in light
  • Trigger negative feedback response
  • Cause the release of an inhibitor

3. Hormone response is proportional to the number of ... it binds to.

  • receptors
  • proteins
  • amines
  • peptides

4. Light activates photoreceptors in which part of the body to activate clock genes?

  • Hair
  • Mouth
  • Retina
  • Skin

5. What is a trophic hormone?

  • Regulates secretion/production of another hormone in a gland
  • Has an indirect effect on a target organ
  • Has a direct effect on a target organ
  • Regulates secretion/production of itself


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