Biochemistry Comprehensive Quiz
0 questions
July 26, 2025
1.
Which of the following is involved in carrying genetic information from DNA for protein synthesis?
2.
Which metabolic product is elevated in individuals with maple syrup urine disease due to a deficiency in the branched-chain alpha-keto acid dehydrogenase complex?
3.
Which of the following is an aromatic amino acid?
4.
What is the function of enzymes within living systems?
5.
In the electron transport chain, which complex transfers electrons from cytochrome c to oxygen?
6.
The daily adult requirement of calcium is:
7.
Which enzyme catalyzes the rate-limiting step of glycolysis?
8.
Which of the following is the first process involving absorption of physical energy by retinal receptors after being exposed to visual stimulus?
9.
Which coenzyme is derived from vitamin B3 and is crucial in redox reactions?
10.
A child presents with dementia, diarrhoea and dermatitis. What vitamin deficiency do you suspect?
11.
Which of the following drugs prevents uric acid synthesis by inhibiting the enzyme xanthine oxidase?
12.
Which of the following is abundantly found in collagen?
13.
Which of the following enzymes act in the pentose phosphate pathway?
14.
Which enzyme is directly inhibited by the cholesterol-lowering drugs known as statins?
15.
Which of the following glucose transporters is insulin-dependent?
16.
The regulation of heterotrimeric G-proteins is similar to the regulation of which one of the following processes?
17.
One method to separate proteins is by charge, through a suitable gel-like substance. If normal HbA and sickle cell hemoglobin (HbS) were placed on such a gel, which molecule would migrate more rapidly to the positive pole of the gel?
18.
Humans can biosynthesize:
19.
Which of the following enzymes is deficient in individuals with phenylketonuria (PKU)?
20.
Which of the following catalyses the reversible degradation of 2-phosphoglycerate to phosphoenolpyruvate?
21.
In which of the following are glucose residues linked by β1 and 4 glycosidic bonds?
22.
Which enzyme is deficient in patients with Lesch-Nyhan syndrome, leading to excessive production of uric acid?
23.
Which of the following types of bonds is covalent?
24.
Which of the following is a 39-residue hormone of the anterior pituitary gland?
25.
Which hormone stimulates glycogenolysis and gluconeogenesis in the liver during times of low blood glucose levels?
27.
The α-D-glucose and β-D-glucose are:
29.
Which of the following is the first amino group entering into the Urea cycle?
30.
Which of the following is an intracellular second messenger?
31.
In eukaryotes, mRNA is synthesised in the cell______, whereas translation occurs in the ______
32.
Oxidation of which of the following substances in the body yields the most calories?
35.
Which vitamin is a coenzyme for carboxylation reactions involved in the synthesis of fatty acids and other important metabolites?
36.
Which of the following is not a polysaccharide?
37.
5-FU is successful in destroying tumor cells because it blocks the production of which of the following?
38.
Rate of reaction of organic compounds is slow due to:
39.
Inborn deficiency of glucose-6-phosphatase results in:
40.
Hemoglobin formation needs both:
41.
A deficiency of which one of the following proteolytic enzymes would have the greatest effect on the digestion of proteins?
43.
Which process is the primary function of the enzyme ribonucleotide reductase?
44.
Whenever the cell’s ATP supply is depleted, which of the following enzyme’s activity is increased?
46.
Which of the following anti-TB drugs causes vitamin B6 deficiency and has to be co-administered with pyridoxine?
47.
Which of the following is a start codon in the process of translation?
48.
Which of the following is false regarding gluconeogenesis?
