Multiple-choice questions (MCQs) are a great way to test how well a student understands a concept. The experts at Guru MCQs have created these biochemistry MCQs based on current trends and practices. These MCQs, along with answers, cover all aspects of biochemistry. They are also helpful for competitive exams like PPSC, FPSC, SPSC, KPPSC, BPSC, and others. The biochemistry Questions and Answers include topics such as Biomolecules, Carbohydrates, Aminocides, Proteins, Protein function, Nucleic acids, Weak Interactions in Aqueous Systems, Ionization of Water, Weak acids & Weak Bases, Water as a Reactant, Proteoglycans, Glycoproteins and Glycolipids,  Proteoglycans, Glycoproteins and Glycolipids – and much more. If you’re interested, you can also find Medical MCQs on the platform.

81. Denaturation of double stranded DNA involves_______________?

A. It gets broken down to nucleotides
B. It becomes single stranded reversibly
C. It becomes single stranded irreversibly
D. It becomes double stranded irreversibly

82. Which of the following is used in recombinant DNA technology ?

A. Restriction endonucleases
B. PCR
C. Reverse transcriptase FISH
D. None of these

83. Transcription is the synthesis of____________?

A. Single stranded complimentary copy of DNA
B. Double stranded complimentary copy of DNA
C. Complimentary copy of RNA
D. COmplimentary copy of rRNA

84. Serum creatine kinase-3 (CK-3) is elevated in_______________?

A. Muscular dystrophy
B. Myocardial infarction
C. Alcoholic cirrhosis
D. Brain tumours

85. Ammonia produced by brain is trapped as_____________?

A. Urea
B. Uric Acid
C. Creatinine
D. Glutamine

86. The patient suffered from hypogondism, failure to thrive, lose of taste and unable to maintain stability. This shows the deficiency of_____________?

A. Zinc
B. Chromium
C. Copper
D. Potassium

87. The sigma subunit of prokaryotic RNA polymerase_______________?

A. Binds the antibiotic Rifampicin
B. Is inhibited by a-amanitin
C. Specifically recognizes the promoter site
D. Is part of the core enzyme

88. Iron absorption is decreased in presence of all except____________?

A. Phytates
B. Ascorbic acid
C. Tannins
D. Phosphates

89. Normal serum calcium level is_______________?

A. 4-6 mg/dl
B. 9-11 mg/dl
C. 19-21 mg/dl
D. 20-30 mg/dl

90. The normal value of serum potassium level is____________?

A. 2.8-3.8 meq/L
B. 3.8-5 meq/L
C. 5-5.8 meq/L
D. 6-7.2 meq/L