Biochemistry MCQs

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During phagocytosis the metabolic process called respiratory burst involves activation of________?

A.Dehydrogenase

B.Peroxidase

C.Hydrolase

D.Oxidase

Submitted by: Academy of Pakistan

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In TCA cycle or tricarboxylic acid cycle, which is first formed________?

A.Isocitrate

B.Fumarate

C.Citrate

D.Succinate

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Which of the following is correct about breakdown of hemoglobin (Hb)________?

A.Hb→Heme→Bilverdin→Uro bilinogen

B.Heme→Hb→Biliverdin→Urobilinogen

C.Hb→Heme→bilirubin→Urobilinogen→Biliverdin

D.Hb→Heme→bilirubin→Urobilinogen

Submitted by: Academy of Pakistan

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All are true regarding glucose 6 phosphate deficiency except________?

A.Hyperglycemia

B.Hyperuricemia

C.Defective cori cycle

D.Increased mobilization of glycogen from liver

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False statement about haemoglobin structure________?

A.Iron is present in ferrous state

B.Hb structurally similar to myoglobin

C.Ferrous ions are in porphyrin rings

D.Hb has 2 polypeptide chains

Submitted by: Academy of Pakistan

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All are components of basement membrane except________?

A.Eutactin

B.Laminin

C.nidogen

D.Rhodopsin

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In Hartnup’s disease ________ is excreted in the urine?

A.Tryptophan

B.Ornithine

C.Phenylalanine

D.Glutamine

Submitted by: Academy of Pakistan

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

A.Phophoric calciuria

B.Xerophthalmia

C.Keratosis

D.Night blindness

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The most abundant protein present in body is________?

A.Globulin

B.Collagen

C.Hemoglobin

D.Albumin

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Glycogen synthesis is increased by________?

A.Cortisone

B.GH

C.Insulin

D.Epinephrine

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The amino acid from which niacin is synthesized is________?

A.Histidine

B.Theronine

C.Tyrosine

D.Tryptophan

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

A.Vitamin B

B.Vitamin C

C.Vitamin D

D.Vitamin A

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Which of the following is present in the plasma but absent in the serum?

A.Firbinogen

B.Globulin

C.Albumin

D.Lecithin

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Specific disease caused by vitamin B1 deficiency________

A.Pellagra

B.Angular cheilitis

C.Peripheral polyneuritis

D.Megaloblastic anemia

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The nitrogen of the body is supplied by________?

A.Proteins

B.Triacyl glycerol

C.Lipids

D.Glucose

Submitted by: Academy of Pakistan

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