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Questions and Answers
Which of the following is true about water-soluble vitamins?
What is the role of vitamin B1 in the body?
What is the active form of vitamin B1?
What are the symptoms of vitamin B1 deficiency?
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How quickly can thiamine depletion, leading to vitamin B1 deficiency, occur?
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What happens to any excess water-soluble vitamins in the body?
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Which vitamin functions as a cofactor for dehydrogenase enzyme reactions including pyruvate dehydrogenase and α-ketoglutarate dehydrogenase?
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What is the primary deficiency symptom associated with impaired glucose breakdown and ATP depletion?
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Which vitamin deficiency leads to glossitis and symptoms of pellagra such as diarrhea, dementia, and dermatitis?
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Which vitamin acts as a cofactor for the synthesis of cystathionine, heme, niacin, histamine, and neurotransmitters such as serotonin and dopamine?
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Which vitamin deficiency can cause convulsions, hyperirritability, and peripheral neuropathy?
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What is the main function of Vitamin B9 (Folate)?
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Which vitamin is responsible for the conversion of dopamine into norepinephrine?
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Which vitamin deficiency can lead to scurvy and collagen synthesis defects?
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Which vitamin is derived from tryptophan and acts as a component of NAD+ and NADP+ used in redox reactions?
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What is the primary symptom associated with Vitamin B5 (Pantothenic acid) deficiency?
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What is the primary symptom associated with Vitamin B6 (Pyridoxine) deficiency?
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Which combination of symptoms is known as Wernicke-Korsakoff psychosis?
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Which vitamin deficiency results in angular stomatitis, glossitis, and scaly dermatitis?
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Which vitamin is required for synthesis of NAD+ and NADP+ related to energy expenditure?
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Which vitamin participates in carbohydrate and lipid metabolism and is particularly important for amino acid metabolism?
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What serves as a coenzyme in multienzyme complexes involved in carboxylation reactions in lipogenesis and gluconeogenesis?
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Which vitamin deficiency can cause depression, hallucinations, muscle pain, hair loss, and dermatitis?
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Which vitamin is required for the synthesis of the neurotransmitters like serotonin and noradrenaline?
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Which vitamin is necessary for the synthesis of purines and pyrimidine thymine?
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What is the vitamin deficiency characterized by megaloblastic anemia, fatigue, constipation, and neurologic symptoms?
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In which form is Vitamin B12 absent from all plants but concentrated in animal livers, fish, and dairy products?
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What vitamin deficiency can lead to capillary fragility, muscle weakness, soft, swollen, bleeding gums, and anemia?
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Which vitamin is responsible for improving the absorption of nonheme iron and participating in bone mineral metabolism?
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What is the primary function of Vitamin C?
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What vitamin is synthesized solely by bacteria and is absent from all plants?
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Which vitamin participates in nucleic acid synthesis and the production of erythrocytes?
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In which deficiency can individuals experience reduced immunocompetence and poor wound healing?
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What is the complex ring structure of Vitamin B12 similar to?
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What is the essential function of Vitamin C in collagen synthesis?
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What are the sources of Folic acid (Vitamin B9)?
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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.
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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.
