BIOCHEM L3C | Water Soluble Vitamins
36 Questions
2 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

Which of the following is true about water-soluble vitamins?

  • Water-soluble vitamins are stored in the liver
  • Excess water-soluble vitamins are stored in the fat cells
  • The body has no storage capacity for most water-soluble vitamins, except for vitamin B9 & B12 (correct)
  • The body stores all water-soluble vitamins for later use
  • What is the role of vitamin B1 in the body?

  • It is primarily involved in iron metabolism
  • It is responsible for calcium absorption in the intestines
  • It acts as an antioxidant in the body
  • It serves as a coenzyme in carbohydrate, fat, and protein metabolism reactions (correct)
  • What is the active form of vitamin B1?

  • Niacinamide
  • Cobalamin
  • Thiamine pyrophosphate (TPP) (correct)
  • Riboflavin
  • What are the symptoms of vitamin B1 deficiency?

    <p>Loss of appetite, constipation, and nausea</p> Signup and view all the answers

    How quickly can thiamine depletion, leading to vitamin B1 deficiency, occur?

    <p>Approximately 14 days</p> Signup and view all the answers

    What happens to any excess water-soluble vitamins in the body?

    <p>They are excreted in the urine</p> Signup and view all the answers

    Which vitamin functions as a cofactor for dehydrogenase enzyme reactions including pyruvate dehydrogenase and α-ketoglutarate dehydrogenase?

    <p>Vitamin B1</p> Signup and view all the answers

    What is the primary deficiency symptom associated with impaired glucose breakdown and ATP depletion?

    <p>Dilated cardiomyopathy</p> Signup and view all the answers

    Which vitamin deficiency leads to glossitis and symptoms of pellagra such as diarrhea, dementia, and dermatitis?

    <p>Vitamin B3</p> Signup and view all the answers

    Which vitamin acts as a cofactor for the synthesis of cystathionine, heme, niacin, histamine, and neurotransmitters such as serotonin and dopamine?

    <p>Vitamin B6</p> Signup and view all the answers

    Which vitamin deficiency can cause convulsions, hyperirritability, and peripheral neuropathy?

    <p>Vitamin B12</p> Signup and view all the answers

    What is the main function of Vitamin B9 (Folate)?

    <p>Coenzyme for 1-carbon transfer/methylation reactions</p> Signup and view all the answers

    Which vitamin is responsible for the conversion of dopamine into norepinephrine?

    <p>Vitamin B6</p> Signup and view all the answers

    Which vitamin deficiency can lead to scurvy and collagen synthesis defects?

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

    Which vitamin is derived from tryptophan and acts as a component of NAD+ and NADP+ used in redox reactions?

    <p>Vitamin B3</p> Signup and view all the answers

    What is the primary symptom associated with Vitamin B5 (Pantothenic acid) deficiency?

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

    What is the primary symptom associated with Vitamin B6 (Pyridoxine) deficiency?

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

    Which combination of symptoms is known as Wernicke-Korsakoff psychosis?

    <p>Mental confusion, ataxia, and loss of eye coordination</p> Signup and view all the answers

    Which vitamin deficiency results in angular stomatitis, glossitis, and scaly dermatitis?

    <p>Vitamin B2</p> Signup and view all the answers

    Which vitamin is required for synthesis of NAD+ and NADP+ related to energy expenditure?

    <p>Vitamin B3</p> Signup and view all the answers

    Which vitamin participates in carbohydrate and lipid metabolism and is particularly important for amino acid metabolism?

    <p>Vitamin B6</p> Signup and view all the answers

    What serves as a coenzyme in multienzyme complexes involved in carboxylation reactions in lipogenesis and gluconeogenesis?

    <p>Vitamin B7</p> Signup and view all the answers

    Which vitamin deficiency can cause depression, hallucinations, muscle pain, hair loss, and dermatitis?

    <p>Vitamin B7</p> Signup and view all the answers

    Which vitamin is required for the synthesis of the neurotransmitters like serotonin and noradrenaline?

    <p>Vitamin B6</p> Signup and view all the answers

    Which vitamin is necessary for the synthesis of purines and pyrimidine thymine?

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

    What is the vitamin deficiency characterized by megaloblastic anemia, fatigue, constipation, and neurologic symptoms?

    <p>Vitamin B12 deficiency</p> Signup and view all the answers

    In which form is Vitamin B12 absent from all plants but concentrated in animal livers, fish, and dairy products?

    <p>All of the above</p> Signup and view all the answers

    What vitamin deficiency can lead to capillary fragility, muscle weakness, soft, swollen, bleeding gums, and anemia?

    <p>Vitamin C deficiency</p> Signup and view all the answers

    Which vitamin is responsible for improving the absorption of nonheme iron and participating in bone mineral metabolism?

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

    What is the primary function of Vitamin C?

    <p>Maintaining metal cofactors in lower valence states</p> Signup and view all the answers

    What vitamin is synthesized solely by bacteria and is absent from all plants?

    <p>Vitamin B12</p> Signup and view all the answers

    Which vitamin participates in nucleic acid synthesis and the production of erythrocytes?

    <p>(Cobalamin) Vitamin B12</p> Signup and view all the answers

    In which deficiency can individuals experience reduced immunocompetence and poor wound healing?

    <p>(Ascorbic acid) Vitamin C deficiency</p> Signup and view all the answers

    What is the complex ring structure of Vitamin B12 similar to?

    <p>Porphyrin of heme</p> Signup and view all the answers

    What is the essential function of Vitamin C in collagen synthesis?

    <p>Hydroxylation of proline &amp; lysine</p> Signup and view all the answers

    What are the sources of Folic acid (Vitamin B9)?

    <p>Liver, yeast, green leafy vegetables (spinach), citrus fruits</p> Signup and view all the answers

    Study Notes

    Water-Soluble Vitamins

    • Water-soluble vitamins are not stored in the body, and excess amounts are excreted in the urine.
    • Vitamin B1 (Thiamine) plays a crucial role in the body as a cofactor for dehydrogenase enzyme reactions, including pyruvate dehydrogenase and α-ketoglutarate dehydrogenase.
    • The active form of Vitamin B1 is Thiamine pyrophosphate (TPP).

    Vitamin B1 Deficiency

    • Symptoms of Vitamin B1 deficiency include impaired glucose breakdown, ATP depletion, and symptoms of Beri-Beri, such as muscle weakness, fatigue, and nerve damage.
    • Thiamine depletion can occur rapidly, leading to Vitamin B1 deficiency.

    Vitamin B3 (Niacin)

    • Vitamin B3 deficiency leads to Pellagra, characterized by symptoms such as diarrhea, dementia, and dermatitis.
    • Vitamin B3 is synthesized from tryptophan and acts as a component of NAD+ and NADP+ used in redox reactions.

    Vitamin B5 (Pantothenic acid)

    • The primary symptom associated with Vitamin B5 deficiency is fatigue.

    Vitamin B6 (Pyridoxine)

    • The primary symptom associated with Vitamin B6 deficiency is neuropathy.

    Vitamin B9 (Folate)

    • The main function of Vitamin B9 is to participate in nucleic acid synthesis and the production of erythrocytes.
    • Sources of Folic acid include leafy green vegetables, legumes, and fortified cereals.

    Vitamin B12

    • Vitamin B12 is required for the synthesis of the neurotransmitters like serotonin and noradrenaline.
    • Vitamin B12 deficiency is characterized by megaloblastic anemia, fatigue, constipation, and neurologic symptoms.
    • Vitamin B12 is absent from all plants but concentrated in animal livers, fish, and dairy products.

    Vitamin C

    • The primary function of Vitamin C is to improve the absorption of nonheme iron and participate in bone mineral metabolism.
    • Vitamin C deficiency can lead to scurvy, capillary fragility, muscle weakness, soft, swollen, bleeding gums, and anemia.
    • Vitamin C is essential for collagen synthesis, and its deficiency can lead to poor wound healing.

    Other Vitamins

    • Vitamin B2 (Riboflavin) is required for the synthesis of cystathionine, heme, and neurotransmitters such as serotonin and dopamine.
    • Vitamin B6 (Pyridoxine) is responsible for the conversion of dopamine into norepinephrine.
    • Biotin serves as a coenzyme in multienzyme complexes involved in carboxylation reactions in lipogenesis and gluconeogenesis.

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Description

    Test your knowledge on the sources and functions of vitamin B9 (folic acid) with this quiz. Explore the importance of folic acid in the synthesis of nucleic acids and its presence in various foods.

    More Like This

    Vitamin B9
    60 questions

    Vitamin B9

    ForemostSugilite avatar
    ForemostSugilite
    Vitamin B Complex Chapter 11 Flashcards
    35 questions
    Anemias and Iron Deficiency Overview
    72 questions
    Vitamin K (Phytonadione) Flashcards
    8 questions

    Vitamin K (Phytonadione) Flashcards

    ImprovingSocialRealism4496 avatar
    ImprovingSocialRealism4496
    Use Quizgecko on...
    Browser
    Browser