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32: Hormones Basic Structure and Function

Beschreibung

• Describe the function of the endocrine system in maintaining homeostasis and provide examples • Define the terms endocrine gland, hormone, receptor and target cell. • Describe the mechanism of hormone action for peptide hormones and catecholamines (water-soluble hormones). • Describe the mechanism of hormone action for steroid hormones and thyroid hormones (lipid-soluble hormones). •Be able to provide examples of hormonal feedback control.
Mer Scott
Quiz von Mer Scott, aktualisiert more than 1 year ago
Mer Scott
Erstellt von Mer Scott vor etwa 8 Jahre
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Zusammenfassung der Ressource

Frage 1

Frage
Which of these is not a function of the endocrine system?
Antworten
  • Regulation of the internal environment
  • Control of energy metabolism
  • Control of growth
  • Control of reproduction and development
  • Control of blood circulation

Frage 2

Frage
Hormones are [blank_start]chemical messengers[blank_end] carried in the [blank_start]blood[blank_end], secreted by [blank_start]endocrine gland cells[blank_end]. They travel to all parts of the body but only affect [blank_start]target cells[blank_end].
Antworten
  • chemical messengers
  • blood
  • endocrine gland cells
  • target cells

Frage 3

Frage
Peptides are chains of amino acids which are soluble in water.
Antworten
  • True
  • False

Frage 4

Frage
Choose the correct statements about water-soluble hormones.
Antworten
  • Peptides are the most common kind of water soluble hormones.
  • Catecholamines like noradrenaline and adrenaline are the less common type of water soluble hormones.
  • Water-soluble hormones are made and released immediately via exocytosis.
  • They travel in the blood dissolved.
  • Their receptors are intracellular.

Frage 5

Frage
Choose the incorrect statement about lipid-soluble hormones.
Antworten
  • They are insoluble in water.
  • Steroids and thyroid hormones are lipid-soluble hormones.
  • They are transported bound to a carrier protein in the blood.
  • Their receptors are intracellular.
  • Thyroid hormones are not stored, but steroids are stored.

Frage 6

Frage
Steroids are made from modifying the base steroid cholesterol.
Antworten
  • True
  • False

Frage 7

Frage
In the cellular response to receptor activation by water soluble hormones, the [blank_start]binding[blank_end] of the hormone to the membrane receptor activates an [blank_start]associated protein[blank_end]. There is typically an [blank_start]enzyme[blank_end] next in the transfer of information which then produces a [blank_start]secondary messenger[blank_end]. [blank_start]Secondary messengers[blank_end] can go on to activate more proteins and/or enzymes in a chain until the [blank_start]cell response[blank_end] is produced, which can take anywhere from [blank_start]milliseconds to minutes[blank_end].
Antworten
  • binding
  • associated protein
  • enzyme
  • secondary messenger
  • Secondary messengers
  • cell response
  • milliseconds to minutes
  • minutes to hours

Frage 8

Frage
Label the steps of cellular responses to lipid-soluble hormones from first (1) to last (7). [blank_start]3[blank_end]. Hormone binds to intracellular receptor. [blank_start]7[blank_end]. New protein mediates cell's specific response (hours - days) [blank_start]4[blank_end]. Hormone-receptor complex acts as a specific transcription factor. [blank_start]2[blank_end]. Hormone diffuses across membrane. [blank_start]5[blank_end]. New mRNA is generated. [blank_start]1[blank_end]. Lipid soluble hormone dissociates from carrier protein. [blank_start]6[blank_end]. New protein is generated by translation of mRNA
Antworten
  • 1
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  • 7
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