Physiology and Biochemistry Quiz
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Questions and Answers

Which hormone is responsible for converting inactive Vitamin D to Vitamin D3 and is important in calcium metabolism?

  • Epinephrine
  • Thyroxine
  • Calcitonin
  • Parathyroid hormone (correct)

What is the normal value of fasting blood sugar?

  • 70-99 mg/dl (correct)
  • 100-120 mg/dl
  • 140-160 mg/dl
  • 120-140 mg/dl

What is the purpose of an ampholyte in isoelectric focusing?

  • Maintain pH of buffer
  • Keep proteins in charged state
  • Establish pH gradient (correct)
  • Establish current flow

Which of the following does not affect serum BUN levels?

<p>Muscle mass (D)</p> Signup and view all the answers

What is the enzyme that catalyzes the hydrolysis of urea to ammonium ion and bicarbonate?

<p>Urease (B)</p> Signup and view all the answers

How much sodium chloride must be dissolved to prepare 500ml of 5 molar solution, given MW = 58.44 g?

<p>584.4 g (B)</p> Signup and view all the answers

Which of the following hormones is regulated by the renin-angiotensin-aldosterone system?

<p>Aldosterone (C)</p> Signup and view all the answers

What is the primary function of aldosterone in the body?

<p>Regulating electrolyte balance and blood pressure (B)</p> Signup and view all the answers

Which of the following is a stimulus for aldosterone secretion?

<p>Increased serum potassium (D)</p> Signup and view all the answers

What is the main reason why blood samples require ice for storage?

<p>To prevent oxygen consumption leading to acid formation (A)</p> Signup and view all the answers

Which of the following is NOT a parathyroid hormone?

<p>Prolactin (D)</p> Signup and view all the answers

What is the name of the hormone produced by the pituitary gland that regulates thyroid function?

<p>TSH (C)</p> Signup and view all the answers

What is the formula to calculate the electrolyte balance?

<p>2Na + (glucose/18) + (BUN/2.8) + 9 (D)</p> Signup and view all the answers

What is the characteristic of primary hypothyroidism?

<p>Low T4/T3, normal TSH (C)</p> Signup and view all the answers

What is the name of the protein that increases the risk of Alzheimer's disease?

<p>Apolipoprotein (A)</p> Signup and view all the answers

Which of the following is an example of a glycoprotein?

<p>FSH (B)</p> Signup and view all the answers

Which gland is responsible for producing active vitamin D3?

<p>Kidney (A)</p> Signup and view all the answers

Which of the following is a product of tyrosine?

<p>Epinephrine (A)</p> Signup and view all the answers

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