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Mcqs MBBS Exams India
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Home >> Biochemistry >> Mcqs Page 10
(Single Best Answer) Question 91: Which of the following can be a homologous substitution for valine in hemoglobin?
A) Isoleucine
B) Glutamic acid
C) Phenylalanine
D) Lysine
Answer (Select an option above to get the answer):
(Single Best Answer) Question 92: Proteins targeted for destruction in eukaryotes are covalently linked to?
A) Clathrin
B) Pepsin
C) Laminin
D) Ubiquitin
Answer (Select an option above to get the answer):
(Single Best Answer) Question 93: Which of the following elements is known to influence the body's ability to handle oxidative stress?
A) Calcium
B) Iron
C) Potassium
D) Selenium
Answer (Select an option above to get the answer):
(Single Best Answer) Question 94: Alpha helix and Beta pleated sheet are examples of ?
A) Primary structure
B) Secondary structure
C) Tertiary structure
D) Quaternary structure
Answer (Select an option above to get the answer):
(Single Best Answer) Question 95: Radioisotopes are used in the following techniques except?
A) Mass spectroscopy
B) RIA
C) ELISA
D) Sequencing of nucleic acid
Answer (Select an option above to get the answer):
(Single Best Answer) Question 96: RNA polymerase does not require ?
A) Template (dsDNA)
B) Activated precursors (ATP, CTP, UTP, CTP)
C) Divalent metal ions (Mn2+, Mg2+)
D) Primer
Answer (Select an option above to get the answer):
(Single Best Answer) Question 97: Xeroderma pigmentosum is produced as a result of defect in?
A) DNA polymerase III
B) DNA polymerase I
C) DNA exonuclease
D) DNA ligase
Answer (Select an option above to get the answer):
(Single Best Answer) Question 98: A genetic disorder renders fructose 1,6-bisphosphatase in liver less sensitive to regulation by fructose 2,6-bisphosphate. All of the following metabolic changes are observed in this disorder except?
A) Level of fructose 1,6 - bisphosphate is higher than normal
B) Level of fructose 1,6 - bisphosphate is lower than normal
C) Less pyruvate is formed
D) Less ATP is generated
Answer (Select an option above to get the answer):
(Single Best Answer) Question 99: The transmembrane region of a protein is likely to have?
A) A stretch of hydrophilic amino acids
B) A stretch of hydrophobic amino acids
C) A disulphide loop
D) Alternating hydrophilic and hydrophobic amino acids
Answer (Select an option above to get the answer):
(Single Best Answer) Question 100: A person on a fat free carbohydrate rich diet continues to grow obese. Which of the following lipoproteins is likely to be elevated in his blood?
A) Chylomicrons
B) VLDL
C) LDL
D) HDL
Answer (Select an option above to get the answer):