Monday, October 22, 2012

Solution to One Word Answer Type Questions- Vitamins-set -1(Choose the correct answer)

1)Methyl Malonic aciduria is associated with vitamin B6/ B12 deficiency.


2) Glycogen synthesis/ degradation requires Vitamin B6.  


3) Carboxylation/ Decarboxylation reactions require Biotin.


4) In Vitamin B12 deficiency Folate is trapped in the demethylated/methylated form.                                                    


5) The coenzyme form of pyridoxine is Pyridoxal phosphate/Pyridoxol phosphate.      

(Pyridoxal phosphate)                              

6) Hydroxylation/ Dehydrogenation reactions require riboflavin.


7) Pellagra is associated with deficiency of B1/ B3.


8) The Dehydro/ Hydroxylated form is the active form of ascorbic acid.


9) Methotrexate competitively inhibits synthesis of reduced form of Niacin/ Folic acid.                                                                

(Folic acid)                                                                                            

10) Xanthurenic acid test is for the assessment of B6/ Folic acid deficiency

(B6 deficiency)

11)  Intrinsic factor is required for the absorption of vitamin B6/B12


12) Menadione / Menaquinone is a synthetic form of vitamin K


13) Carboxylation/ Decarboxylation reactions require B6.


14) The absorbable form of Thiamine is Free Thiamine/TPP

(Free Thiamine)  

15) Hydroxylation/ Dehydrogenation reactions require Ascorbic acid.


16) Pellagra is precipitated by the deficiency of B1/B6.


17) The Dehydro/ Reduced form is the active form of Folic acid.


18) Alcohol inhibits the absorption of Thiamine/vitamin A.


19) Histidine loading test is for the assessment of B6/ Folic acid deficiency


20) Achlorhydria can cause vitamin B6/ B12 deficiency    


 21) Heme synthesis/ degradation requires VitaminB6  


 22) Carboxylation of Glutamic acid residues requires vitamin K/Biotin during the process of coagulation.                                      

(Vitamin K)

23) Reduction / Dehydrogenation reactions require NADPH


24) Lactic acidosis is associated with deficiency of B1/ B3.  


25) “Burning feet syndrome” is a feature of niacin/Pantothenic acid deficiency.

(Pantothenic acid)

26) Sulphonamides competitively inhibit synthesis of Niacin/Folic acid.

(Folic acid)

27) Retinol/ retinoic acid is required for the regulation of gene expression and tissue differentiation.

(Retinoic acid)

28) 11-cisRetinal/11-cis Retinol is required for vision.    

(11-cis Retinal)      

Q.B- Name the coenzyme for each of the following reactions-



2)Pyruvate——————————–> Oxaloacetate.



  (Pyridoxal phosphate-B6P)                                        



5) Lysine————————————->HydroxyLysine.


6) Glutamicacid————————->.Gamma Carboxy Glutamic acid

   (Vitamin K)

7)Malate Oxaloacetate.  

8)Glutamate——————————–>Alpha keto glutarate.

 (NAD+ or NADP+)                      

9) Succinate——————————->Fumarate.  



   (Pyridoxal phosphate-B6 P)

11)Homocysteine————————> Methionine.

  (Vitamin B12 and Folic acid)                                  

12) L- Methyl Malonyl coA————> Succinyl co A.  

 (Vitamin B12)            

------------------------------------------ Best Wishes: Dr.Ehab Aboueladab, Tel:01007834123, ------------------------------------------
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