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Updated Vitamins ( Biochemistry ) MCQs – Latest Medical MCQs

Updated Vitamins ( Biochemistry ) MCQs – Latest Medical MCQs

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Latest Medical MCQs

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Latest Vitamins ( Biochemistry ) Mcqs

The most occurred mcqs of Vitamins ( Biochemistry ) in past papers. Past papers of Vitamins ( Biochemistry ) Mcqs. Past papers of Vitamins ( Biochemistry ) Mcqs . Mcqs are the necessary part of any competitive / job related exams. The Mcqs having specific numbers in any written test. It is therefore everyone have to learn / remember the related Vitamins ( Biochemistry ) Mcqs. The Important series of Vitamins ( Biochemistry ) Mcqs are given below:

Vitamin C effects_________________?

A. Formation of osteoid matrix
B. Maturation of procollagen
C. Calcification of osteoid
D. Both A and B

Cereals are deficient in_____________?

A. Vitamin C
B. Iron
C. Vitamin B complex
D. Calcium

The vitamin K dependent proteins C and S are characterized by their ability to inactivate factor_____________?

A. VIII a and V a
B. V a
D. None of the above

Who is known for his work on scurvy ?

A. John snow
B. James lind
C. Fracastorius
D. Edward Jenner

Aniacinosis results in______________?

A. Beri beri
B. Perleche
C. Pellagra
D. Nyctalopia

Biotin is required for the activity of_______________?

A. Pyruvate carboxylase
B. Succinate thiokinase
C. Lactate dehydrogenase
D. Phosphohexose isomerase

All of the following are true about manifestations of vitamin E deficiency except_____________?

A. Posterior column abnormalities
B. Hemolytic anemia
C. Cerebellar ataxia
D. Autonomic dysfunctions

Both Vitamin K and C are involved in______________?

A. Antioxidant mechanisms
B. Post translational modifications
C. The synthesis of clotting factors
D. The microsomal hydroxylation reactions

Thiamine deficiency can be diagnosed by measuring________________?

A. Alkaline phosphatase levels in blood
B. Thiamine levels in blood
C. Transketolase activity in RBC
D. Plasma pyruvate and lactic acid levels

Vitamin B12 is_______________?

A. Extrinsic factor of castle
B. Cyano cobalamine
C. Intrinsic factor of castle
D. A fat soluble vitamin

Sources of the nucleotide portion of NAD include__________________?

A. Riboflavin
B. N-methyl nicotinamide
D. Tryptophan

Consumption of raw egg white in the diet may result in the deficiency of______________?

A. Thiamine
B. Biotin
C. Riboflavin
D. Pyridoxine

Peripheral neuropathy due to deficiency of vitamin is seen with_______________?

A. Pyridoxine
B. Vit A
C. Vit E
D. Pantothenic acid

Deficiency of vitamin C causes the following except_______________?

A. Soft swollen gums
B. Defective collagen synthesis
C. Pigeon chest
D. Subcutaneous & other hemorrhage

FIGLU excretion test is to estimate deficiency of_______________?

A. Vitamin B6
B. Vitamin K
C. Vitamin folic acid
D. Niacin

Avidin influences which of the following vitamins ?

A. Biotin
B. Thiamine
C. Niacin
D. Phylloquinone

Which of the following are the sources of Vit C_________________?

A. Apple
B. Citrus fruits
C. Fresh green vegetables
D. Both B and C

Niacin & riboflavin help in_____________?

A. Redox reactions
B. Methyl group transfer
C. Transamination reaction
D. Amine group transfer

Collagen formation is affected in deficiency of_____________?

A. Vit B2
B. Vit C
C. Vit A
D. Vit D

Angular cheilosis is frequently associated with deficiency of______________?

A. Niacin
B. Riboflavin
C. Thiamine
D. Folic acid

The amino acid from which niacin synthesized is_______________?

A. Threonine
B. Tryptophan
C. Tyrosine
D. Histidine

Lipid Metabolism MCQs

Coenzyme A contains which of the following vitamins_______________?

A. Pyridoxine
B. Biotin
C. Pantothenic acid
D. Niacin

Which of the following is the poorest source of vitamin C ?

A. Milk
B. Guava
C. Cabbage
D. Radish

Pernicious anaemia occurs in___________?

A. Vit C deficiency
B. Vit B12 deficiency
C. Vit B1 deficiency
D. Vit D deficiency

Vitamin associated with one carbon transfer is__________?

A. Thiamine
B. Niacin
C. Ascorbic acid
D. Folic acid

Average daily dose of vitamin C is____________?

A. 60 – 100 mg
B. 50 – 60 mg
C. 30 – 40 mg
D. 100 – 150 mg

Xerophthalmia is caused by_______________?

A. Vitamin A deficiency
B. Vitamin C deficiency
C. Vitamin D deficiency
D. Vitamin K deficiency

Which of the following factors delay wound healing____________?

A. Vitamin B12 deficiency
B. Infection
C. Ascorbic acid deficiency
D. B & C option

Ascorbic acid_____________?

A. Is a reducing agent
B. Is harmless in high doses
C. Decrease iron absorption
D. Is requirement for lysyl oxidase

Tocopherol is associated with____________?

A. Vitamin K
B. Vitamin E
C. Vitamin A
D. Vitamin D

The action of vitamin K in formation of clotting factor is through__________________?

A. Golgi complex
B. Post translation
C. Post transcription
D. Endoplasmic reticulum

Which of the following is not true of Vit D_______________?

A. Its deficiency results in rickets
B. Increase calcium absorption from the intestines
C. Its active form is calcitriol
D. Its decrease cause phosphate reabsorption from the kidneys

Most of vitamin B12 in the body is stored as_____________?

A. Methyl B12
B. Cyano cobalamine
C. Hydroxy B12
D. None of the above

The following vitamin is important in non-oxidative decarboxylation, transamination and transsulfuration reactions_____________?

A. Thiamine
B. Riboflavin
C. Pyridoxine
D. Pantothenic acid

Vitamin C is present in largest amount in the body in____________?

A. Kidneys
B. Eye
C. Testes
D. Adrenal cortex

Tryptophan load test helps in the evaluation of deficiency of the vitamin______________?

A. Niacinamide
B. Folic acid
C. Pyridoxine
D. Cyano cobolamine

Which vitamin is related to a co-factor in glycine metabolism is______________?

A. Thiamine
B. Folic acid
C. Vit E
D. Cobalamine

Vitamins MCQs

Two Vitamin whose derivatives are involved in transformation of serine to glycine are_____________?

A. B12 and nicotinamine
B. B6 ad B12
C. Folic acid and B6
D. Folic acid and B12

The mineral having sparing action on Vitamin E_______________?

A. Iron
B. Chromium
C. Iodine
D. Selenium

1st clinical sign of vitamin A deficiency is_____________?

A. bitot’s spots
B. night blindness
C. xerostomia
D. conjunctival xeroses

Vitamin D_____________?

A. Deficiency on adults leads to rickets
B. Synthesis is regulated at the reaction catalyzed by 15-hydroxylase
C. Absorption requires bile pigments
D. Along with PTH, increases calcium resorption from bone

Thiamine deficiency causes decreased energy production because____________?

A. It is co-factor in oxidative reduction
B. It is required for the process of transmination
C. It is co-enzyme for transketolase in pentose phosphate pathway
D. It is co-enzyme for pyruvate dehydrogenase

One molecule of B-carotene gives rise to______________?

A. 3 unit of Vitamin A
B. 2 unit of Vitamin A
C. 1 unit of Vitamin A
D. 4 unit of Vitamin A

The maximum content of vitamin E is found in____________?

A. Fish liver oil
B. Cold liver oil
C. Wheat germ oil
D. Liver

Vitamin A_____________?

A. Maintains normal plasma calcium levels
B. Deficiency causes impaired vision
C. Is water soluble
D. Is required for formation of clotting factors

Vitamin B12 acts as a coenzyme to which one of the following enzyme ?

A. Glycogen synthase
B. Homocyteine methyl transferase
C. Isocitrate dehydrogenase
D. G-6-P dehydrogenase

Deficiency of vitamin C causes the following except____________?

A. Abnormal Collagen
B. Painful swollen gums
C. Anaemia
D. Diarrhoea

Vit B12 is absorbed in the_____________?

A. Lower jejunum
B. Terminal ileum
C. Stomach
D. Proximal ileum

Coenzyme forms are correctly matched except_____________?

A. Niacin – NAD+NADP
B. Vitamin B – ATP
C. Biotin – carboxylated biotin
D. Vitamin B2 – FMN+FAC

Vitamin K dependent clotting factors are______________?

D. X
E. All of the above

The reaction inhibited in thiamine deficiency is_______________?

A. Pyruvate to acetyl CoA
B. Succinyl CoA to fumarate
C. Citrate to alpha ketoglutarate
D. None of the above

Vit-K deficiency is indicated by___________?

A. Decreased prothrombin time
B. Increased prothrombin time
C. Low platelet count
D. None of the above

Mineral present in Vit B12 is_____________?

A. Iron
B. Cobalt
C. Selenium
D. Calcium

Absorption of vitamin K requires normal absorption of_________________?

A. Fat
B. Calcium
C. Amino acids
D. Glucose

The 3 – D’s dermatitis, diarrhoea and dementia are seen in deficiency of____________?

A. Riboflavin
B. Thiamin
C. Niacin
D. Pyridoxine

The function of vitamin A is/are related to which of the following ?

A. Retinal
B. Retinol
C. Retinoic acid
D. All of the above

Daily Vitamin A intake___________?

A. 2000 I.U
B. 1000 I.U
C. 3000 I.U
D. 4000 I.U

Carbohydrate MCQs

Scurvy is the result of deficiency of____________?

A. Vitamin B
B. Vitamin C
C. Vitamin A
D. Vitamin D

Deficiency of nicotinic acid results in____________?

A. Night blindness
B. Pellagra
C. Beri-beri
D. Pernicious anemia

In humans and other primates as well as in guinea pigs, this vitamin cannot be synthesized because of the absence of the enzyme L-gulonolactone oxidase: the vitamin is_____________?

A. Nicotinic acid
B. Pantothenic acid
C. Ascorbic acid
D. Folic acid

Deficiency of which vitamin causes glossitis dementia roughed keratotic areas on skin and gastrointestinal symptoms ?

A. Pyridoxine
B. Riboflavin
C. Niacin
D. Pantothenic acid

Rhodopsin deficiency is chiefly associated with________________?

A. Rickets
B. Vitamin D deficiency
C. Vitamin A deficiency
D. Scurvy

Vitamin K____________?

A. Helps in formation of prothrombin
B. Prevention of capillary fragility
C. Inhibition of antithrombin
D. Stimulation of hematopoiesis in red bone marrow

Vitamin K antagonizes_____________?

A. Thrombin formation
B. Corticosteroids
C. Bishydroxy coumarin
D. Production of clotting factors by liver

In vitamin A deficiency, patient complains of all of the following except___________?

A. Xerophthalmia
B. Night blindness
C. Keratosis
D. Phophoric calciuria

The vitamin that facilitates iron absorption____________?

A. Biotin
B. Ascorbic acid
C. Folic acid
D. Para amino benzoic acid

Active form of vitamin D in kidney is_____________?

A. 25 hydroxy cholecalciferol
B. 1 dihydroxy cholecalciferol
C. 1,25 dihydroxy cholecalciferol
D. 7 dihydroxy calciferol

Deficiency of vitamin A causes the following except_____________?

A. Corneal dryness
B. Night blindness
C. Bitot’s spots
D. Myopia

Fast soluble vitamins are_____________?

A. A, B, E, K
B. A, D. E, K
C. A, B , D, K
D. A, C, E, K

Specific disease caused by vitamin B1 deficiency_______________

A. Angular cheilitis
B. Pellagra
C. Megaloblastic anemia
D. Peripheral polyneuritis

A patient with chronic renal failure and bone pains will have deficiency of which vitamin_____________?

A. Vitamin B
B. Vitamin A
C. Vitamin C
D. Vitamin D

Beri-beri is caused due to the deficiency of______________?

A. Thiamine
B. Ascorbic acid
C. Pyridoxine
D. Riboflavin

Which vitamin is the most indispensable during mitosis______________?

A. Folic acid
B. Ascorbic acid
C. Pantothenic acid
D. Aspartic acid

Malonyl aciduria is seen in deficiency of_____________?

A. Folic acid
B. B12
C. Pyridoxine
D. Riboflavin

Biological activity of tocopherols has been attributed, in part to their actions as_____________?

A. Anticoagulants
B. Antioxidant
C. Provitamin
D. Antidotes for selenium poisoning

Which vitamin is synthesized by intestinal bacteria ?

A. Vit A
B. Vit B
C. Vit D
D. Vit K

Of prime importance in the structure of flavoproteins is____________?

A. Vit B1
B. Vit B2
C. Vit B6
D. Vit A

Vitamin also acting as hormones________________?

A. Vitamin D
B. Vitamin B1
C. Vitamin A
D. Vitamin C

Updated Vitamins ( Biochemistry ) MCQs – Latest Medical MCQs