CHE 006: Biochemistry Lecture - Minerals in the Body
32 Questions
1 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What are minerals in the context of the text?

  • Elements, usually metallic elements, essential for the normal growth and maintenance of the body (correct)
  • Refers to metallic taste in food
  • Stones and gems found in nature
  • Synthetic substances used in manufacturing
  • What is the daily requirement for calcium in adults according to the text?

  • 300mg/day
  • 500mg/day (correct)
  • 1500mg/day
  • 1000mg/day
  • Where is 99% of the calcium in the body found?

  • Extracellular fluid
  • Bones and teeth (correct)
  • Blood
  • Muscles
  • Why do pregnant/lactating women require more calcium according to the text?

    <p>Their bones and teeth need extra support during pregnancy and lactation</p> Signup and view all the answers

    What are the major sources of calcium mentioned in the text?

    <p>Milk &amp; cereal in India</p> Signup and view all the answers

    Why are minerals and vitamins emphasized as essential in the text?

    <p>To maintain homeostatic balance and mediate metabolic reactions in the body</p> Signup and view all the answers

    What hormone favors calcium absorption during reproductive age?

    <p>Estrogen</p> Signup and view all the answers

    In which part of the small intestine does calcium absorption take place?

    <p>Duodenum</p> Signup and view all the answers

    Which factor is responsible for increase in calcium absorption?

    <p>Parathyroid hormone</p> Signup and view all the answers

    What substance decreases calcium absorption?

    <p>Phytic acid</p> Signup and view all the answers

    Why does phosphate decrease calcium absorption?

    <p>Because they are inversely related</p> Signup and view all the answers

    What is the function of calcium in muscle fibers?

    <p>To increase neuromuscular irritability</p> Signup and view all the answers

    What does calcium act as in the system involving protein and inositol triphosphate?

    <p>Activator</p> Signup and view all the answers

    How does calcium affect the passage of serum through capillaries?

    <p>It decreases the passage</p> Signup and view all the answers

    Which factor is necessary for normal coagulation and is a clotting factor?

    <p>Calcium</p> Signup and view all the answers

    What does calcium prolong in the heart?

    <p>Systole</p> Signup and view all the answers

    Why are minerals referred to as indispensable in the text?

    <p>Because they are essential for the normal growth and maintenance of the body</p> Signup and view all the answers

    What is the daily requirement for calcium in pregnant/lactating women according to the text?

    <p>1500mg/day</p> Signup and view all the answers

    In which part of the body is 99% of the calcium found?

    <p>Bones &amp; teeth</p> Signup and view all the answers

    Why do pregnant/lactating women require more calcium according to the text?

    <p>To support the development and growth of the fetus</p> Signup and view all the answers

    What is the major source of calcium mentioned in the text?

    <p>Malunggay/Moringa</p> Signup and view all the answers

    What is the daily requirement for calcium in children according to the text?

    <p>1200mg/day</p> Signup and view all the answers

    What is the function of calbindin in relation to calcium absorption?

    <p>It binds to DNA and increases calcium absorption</p> Signup and view all the answers

    How does high calcium levels affect neuromuscular irritability?

    <p>It increases neuromuscular irritability</p> Signup and view all the answers

    Which substances are responsible for decreasing calcium absorption?

    <p>Phytic acid and oxalate</p> Signup and view all the answers

    What is the role of calcium in coagulation factors?

    <p>It is a clotting factor and aids in normal coagulation</p> Signup and view all the answers

    Which factor regulates blood calcium levels by binding to DNA and causing the transcription of genetic code for calbindin?

    <p>Vitamin D</p> Signup and view all the answers

    What does calcium's activity as a second messenger in systems involving protein and inositol triphosphate act as?

    <p>A regulator</p> Signup and view all the answers

    Why do anticoagulants like EDTA, Heparin, and Oxalates target calcium?

    <p>Because calcium is easily removed compared to other clotting factors</p> Signup and view all the answers

    How does calcium affect the passage of serum through capillaries?

    <p>It decreases the passage of serum through capillaries</p> Signup and view all the answers

    What leads to osteoporosis in females aged 45-51?

    <p>Stoppage of estrogen production</p> Signup and view all the answers

    What is the function of Calsequestrin in relation to calcium?

    <p>It releases calcium from sarcoplasmic reticulum</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Browser