Mcq Subject: Biochemistry

Amino acid absorption is by:

A. Facilitated transport

B. Passive transport

C. Active transport

D. Pinocytosis

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An eight-month-old female infant presented with recurrent episodes of hypoglycemia, especially if time interval of feeding is increased. Dicarboxylic acid is present in the urine. Urine ketone bodies is negative. The child responded well to IV Glucose, less fat and more carbohydrate diet, frequent feeding. The child was diagnosed to be MCAD deficiency. What is the reason for hypoglycemia?

A. Increased dicarboxylic acid inhibit glycogenolysis

B. Lack of ATP to support gluconeogenesis

C. Lack of acetyl-CoA to favour glycogenolysis

D. Glycogen stores are inadequate in infants

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Initial amino acid in prokaryotic protein synthesis ?

A. Arginine

B. Methionine

C. Formyl-methionine

D. Alanine

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Non-coding RNAs are

A. siRNA

B. miRNA

C. tRNA

D. mRNA

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The transmembrane adhesive molecules present in hemi desmosomes which specifically binds to basal lamina glycoprotein laminin are

A. integrin α6-β4

B. the catenins desmoplakin

C. cadherins desmoglein

D. α and β catenin

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In PCR, DNA polymerase is used in

A. DNA replication

B. DNA Elongation

C. DNA Mulitiplication

D. All

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Hay’s sulpher test is used to detect which of the following ?

A. Bile salts in urine

B. Reducing sugar in urine

C. Ketone bodies in urine

D. Urobilinogen in urine

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Which of the following cellular body is NOT found in nucleus?

A. P-bodies

B. Nucleolus

C. Cajal bodies

D. Interchromatin granule clusters

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Albinism is a genetic disease that results in incomplete metabolism of:

A. Histidine

B. Cystine

C. Tyrosine

D. Alanine

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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. Pantothenic acid

B. Nicotinic acid

C. Ascorbic acid

D. Folic acid

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