Biochemistry
Nutrition: Vitamins And Minerals
Compiled By Simon Mwangi
Edition: 2024/25
, Science | Biochemistry I of IX pages
1. What are the two water soluble vitamins?
b and c
2. Water soluble vitamins are excreted once concentration surpasses the ____ ____
renal threshold
3. Metabolic stores labile, depletion occurs in weeks or months. Deficiencies show up quickly on inadequate
true
4. B-complex and vitamin c are not stored in the body and must be replaced everyday. True or false?
true
5. Thiamin (B1) is is rapidly converted to ____ ____ and ____ ____
thiamine pyrophosphate; thymine triphosphate
6. A symptom of thiamine deficiency is loss of appetite, constipation, nausea, mental depression, fatigue - this
Wernicke-Korsakoff
7. Severe thiamin deficiency leads to beriberi disease. What type of population is this seen with?
population that rely on polished rice and alcoholics
8. Dry beriberi can cause ____ ____ and it is considered wet beriberi when coupled with _____
muscular dystrophy; edema
9. Both forms of beriberi lead to ___ failure
heart
note: coffee and tea destroy thiamin
10. Riboflavin (B2) is a recourse of ____ and ____ - both are coenzymes
FAD; FMN
11. Riboflavin is required for ___ mobilization so deficiency contributes to anemia
iron
12. Symptoms of Riboflavin deficiency include?
scaly dermatitits, glossitis
note: chronic alcoholism can lead to deficiency
13. _____ slows conversion of riboflavin to FMN and FAD
hypothyroidism
14. Niacin (B3) is not a vitamin in strict sense - it can be synthesized from ____
Trp
60 mg Trp -> 1 mg Niacin.. not very efficient
15. What does Trp require to synthesize Niacin?
pyridoxine, riboflavin, and iron
Biochemistry 2024/25 Edition
Nutrition: Vitamins And Minerals
Compiled By Simon Mwangi
Edition: 2024/25
, Science | Biochemistry I of IX pages
1. What are the two water soluble vitamins?
b and c
2. Water soluble vitamins are excreted once concentration surpasses the ____ ____
renal threshold
3. Metabolic stores labile, depletion occurs in weeks or months. Deficiencies show up quickly on inadequate
true
4. B-complex and vitamin c are not stored in the body and must be replaced everyday. True or false?
true
5. Thiamin (B1) is is rapidly converted to ____ ____ and ____ ____
thiamine pyrophosphate; thymine triphosphate
6. A symptom of thiamine deficiency is loss of appetite, constipation, nausea, mental depression, fatigue - this
Wernicke-Korsakoff
7. Severe thiamin deficiency leads to beriberi disease. What type of population is this seen with?
population that rely on polished rice and alcoholics
8. Dry beriberi can cause ____ ____ and it is considered wet beriberi when coupled with _____
muscular dystrophy; edema
9. Both forms of beriberi lead to ___ failure
heart
note: coffee and tea destroy thiamin
10. Riboflavin (B2) is a recourse of ____ and ____ - both are coenzymes
FAD; FMN
11. Riboflavin is required for ___ mobilization so deficiency contributes to anemia
iron
12. Symptoms of Riboflavin deficiency include?
scaly dermatitits, glossitis
note: chronic alcoholism can lead to deficiency
13. _____ slows conversion of riboflavin to FMN and FAD
hypothyroidism
14. Niacin (B3) is not a vitamin in strict sense - it can be synthesized from ____
Trp
60 mg Trp -> 1 mg Niacin.. not very efficient
15. What does Trp require to synthesize Niacin?
pyridoxine, riboflavin, and iron
Biochemistry 2024/25 Edition
