Topic

Biochemistry PYQs

105 previous year questions across 53 subtopics · answers and explanations included

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Showing 105 questions · page 5 of 6

81

Which of following is a trisaccharide?

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82

The comparison of the structures of haemoglobin and myoglobin shows that they have

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83

A protein of 100 KDa would have approximately how many amino acids?

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84

The mucopolysaccharide hyaluronic acid is composed of

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85

The location of a proteins in cells can be studied using

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86

Given below are two statements one is labelled as Assertion A and the other is labelled as Reason R: Assertion A: In size exclusion chromatography, larger proteins elute earlier and smaller proteins elute later. Reason R: When matrices like sephadex are…

MediumSize Exclusion ChromatographyView answer

87

Proteins are commonly purified by ion exchange chromatography (IEC) as a final step. Which of the following statements is NOT true?

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88

In an enzyme catalyzed reaction following Michaelis-Menten kinetics, both the enzyme amount and substrate (S) are doubled and we observe that the reaction rate is also doubled. From this, we can conclude that:

MediumEnzyme Kinetics - Substrate ConcentrationView answer

89

The entropy of a growing cell does NOT keep increasing continuously because:

MediumThermodynamics of Living SystemsView answer

90

For determining V_m and K_m of an enzyme catalyzed reaction, we often use a double reciprocal plot of 1/v versus 1/s. This is NOT the best method because:

MediumEnzyme Kinetics - Lineweaver-Burk PlotView answer

91

Which one of the following is NOT a food rich in Vitamin A?

MediumVitamins & NutritionView answer

92

The red color of beetroot is due to the presence of:

MediumPlant Pigments - BetalainsView answer

93

A protein sequence has twenty consecutive hydrophobic amino acids followed by a few hydrophilic residues and this pattern repeats itself five to seven times. Which kind of a protein is described here?

MediumMembrane Proteins & Hydrophobic SegmentsView answer

94

The genetic disease familial Hypercholesterolemia that leads to an increase in blood cholesterol is caused due to

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95

Sam was investigating impact of lactate dehydrogenase knockout on glycolytic pathway. What will be the net NADH production that he would expect in conversion of Glucose to pyruvate in this case?

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96

Where is the greatest likelihood of the occurrence of a proline residue in a protein structure?

MediumProtein Structure - Amino Acid LocalizationView answer

97

Where is the greatest likelihood of the occurrence of a Cysteine residue in a protein structure?

MediumProtein Structure - Cysteine & Disulfide BondsView answer

98

Which family of proteins has the greatest likelihood of containing a Leucine-zipper motif?

MediumProtein Motifs - Leucine ZipperView answer

99

Proteins usually have hydrophobic interiors or cores and hydrophilic exteriors. If a protein comprises hydrophobic patches on its outer surface, what can it mean?

MediumProtein Hydrophobicity & Protein InteractionsView answer

100

Which of the following does not have a quaternary structure?

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