HORMONES General Structure and Properties
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Questions and Answers

What is the primary function of thyroxine-binding globulin (TBG)?

  • To synthesize thyroid hormones from iodine and tyrosine
  • To regulate the activity of the sodium-potassium ATPase pump
  • To couple diiodotyrosine (DIT) molecules to form T4
  • To transport thyroid hormones T3 and T4 in the bloodstream (correct)

Which of the following statements about thyroglobulin is true?

  • It couples diiodotyrosine (DIT) molecules to form T3
  • It is the inactive precursor to T3 and T4
  • It transports iodide into the thyroid gland
  • It is iodinated and glycosylated during T3 and T4 synthesis (correct)

What is the primary role of the sodium-potassium ATPase transporter in thyroid hormone synthesis?

  • To couple diiodotyrosine (DIT) molecules to form T4
  • To transport iodide into the thyroid gland (correct)
  • To synthesize T3 from monoiodotyrosine (MIT) and diiodotyrosine (DIT)
  • To glycosylate thyroglobulin during T3 and T4 synthesis

Which of the following statements about the synthesis of T3 and T4 is correct?

<p>The coupling of an MIT and a DIT molecule forms T3 (D)</p> Signup and view all the answers

What is the significance of the T:S ratio in thyroid hormone synthesis?

<p>It is the ratio of iodide in the thyroid to iodide in the serum (D)</p> Signup and view all the answers

Qual es le effecto electrogenico del transportator Na+-K+-ATPase?

<p>Crea un disparentia de carga inter le interior e le exterior del cellula. (B)</p> Signup and view all the answers

Qual es le effecto de ouabain e digitalis sur le Na+-K+-ATPase?

<p>Inhibi illo. (C)</p> Signup and view all the answers

Como le gradient de Na+ influentia le transporto de glucose in le intestino parve?

<p>Plus grande gradient de Na+ -&gt; plus grande entrata de glucose. (B)</p> Signup and view all the answers

A qual altere transportatores pote esser associate le Na+-K+-ATPase?

<p>Transportatores de glucose. (C)</p> Signup and view all the answers

Como funciona un symport Na+-glucose?

<p>Illo permite movimento sinergic de Na+ e glucose. (C)</p> Signup and view all the answers

Quid produce le interaction inter glucose e Na+ in un symporter?

<p>Un entrata major de glucose. (A)</p> Signup and view all the answers

Qual es le effecto de un gradient major de Na+ sur le transporto celular de glucose?

<p>Incrementa le transporto celular de glucose. (B)</p> Signup and view all the answers

Qual es un characteristic clave del effecto electrogenico create per le Na+-K+-ATPase?

<p>Illo crea un disparentia intra-cellular negative. (B)</p> Signup and view all the answers

Como inhibi ouabaina e digitalis le function del Na+-K+-ATPase?

<p>Per inhibir le function normal del ATPase. (D)</p> Signup and view all the answers

Qual es le consequentia del interaction inter glucose e Na+ in un symporter?

<p>Un entrata major de glucosa. (A)</p> Signup and view all the answers

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