Biochemistry
Multiple choice questions covering key biochemistry topics including enzymes, metabolism, proteins, nucleic acids, hormones, and biochemical analysis techniques
Questions
Aminobenzyloxy methylcellulose or ABM paper is widely used in the field of study of biochemistry.
The ABM paper is widely used in which of the following fields of study?
- Study of proteins
- Study of carbohydrates
- Study of fats
- Study of nucleic acids
- Study of enzyme activities
Aconitase is the enzyme catalyzing the interconversion of citrate and isocitrate in the citric acid cycle.
Which of the following elements is found in the enzyme aconitase?
- Zinc
- Copper
- Manganese
- Iron
- Molybdenum
Gout is a painful disorder of bone joints.
Which of the following analogues of hypoxanthine is used in the treatment of gout?
- 6-mercaptopurine
- Allopurinol
- Alpha amanitin
- Amethopterin
- Aminopterin
The proteins that bind to and severe the actin filaments are called actin-fragmenting proteins.
Which of the following calcium-dependent proteins is called actin-fragmenting protein?
- Accelerin
- Acumentin
- Gelsolin
- Actinin
- Ankyrin
Various inhibitors are used in the study of the electron transport system at various levels of electron carriers.
Which of the following substances acts as an inhibitor of the electron transport system between the flavoproteins and coenzyme Q?
- Atractyloside
- Bactoprenol
- Amytal
- Azurin
- Antimycin A
Naphthol blue black or Amido black 10B is a dye used for the spectrophotometric determination of proteins.
Which of the following compounds can bring about frame shift mutations?
- Acriflavin
- Acyclovir
- Agent orange
- Albomycin
- Naphthol blue black
Glycerol is a typical breakdown product of fat or lipid and fatty acids being the other major counterparts.
Which of the following tests represents an example of the qualitative test for glycerol?
- Albustix test
- Anthrone test
- Acrolein test
- Allen's test
- Barfoed's test
Various molecules and ions interact non-covalently in different ways.
Which of the following non-covalent interactions occurs when the outer electron orbitals overlap?
- Charge-dipole interaction
- Dipole-dipole interaction
- Dispersion
- Van der Waals repulsion
- Dipole-induced dipole interaction
Avidin is a protein in raw egg white.
Which of the following vitamins can combine with avidin producing the related deficiencies?
- Vitamin nicotinic acid
- Vitamin biotin
- Vitamin B12
- Vitamin E
- Vitamin D
There are various chemical tests performed as a part of urine analysis.
Which of the following tests helps us to determine the presence of ammonia in urine?
- Albustix test
- Allen's test
- Bang method
- Berthelot reaction
- Bradshaw test
Autocoids are a group of substances found naturally in our body that resemble hormones or drugs in their activity on cells and thus, act on restricted areas of our body.
Which of the following compounds is not an example of autacoids?
- Histamine
- Serotonin
- Angiotensin
- Prostaglandins
- Somatomammotropin
Gibberellins are vital plant growth hormones.
Which of the following compounds represents the precursor for synthesis of gibberellins?
- Furfural
- Zeaxanthin
- Campesterol
- Tryptophan
- Ent-kaurene
Hypoxanthine is a precursor of purine bases in both DNA and RNA.
Which of the following compounds is a well known example of hypoxanthine analog?
- Thymidine
- AZT
- 6-mercaptopurine
- Abrin
- Acetonyl-SCoA
Various phytohormones play various roles in growth and metabolic activities of plants.
Which of the following substances is required for increasing the size of apple during apple production?
- Morphactin
- Pomalin
- Vernalin
- Flavonoid
- Abscisic acid
Isoproterenol is a well known metabolic analog used as a vital drug.
Which of the following hormonal actions is mimicked by isoproterenol?
- Glucagon
- Glucocorticoid
- Aldosterone
- Isoproterenol
- ACTH
An anticoagulant is a substance that prevents the clotting of blood. Most anticoagulants function by binding calcium ions.
Which of the following substances is not an example of anticoagulant?
- Oxalate
- Citrate
- Ethylenediaminetetraacetic acid
- Bombesin
- Heparin
An artificial sweetener is a sugar substitute that aids in cutting calorie intake.
Which of the following substances is used as an artificial sweetener?
- Amphetamine
- Aspartame
- Bentonite
- Beta carotene
- CDP-sugar
Gluconeogenesis includes all mechanisms & pathways responsible for converting non-carbohydrates to glucose.
Which of the following factors plays a significant role in decreasing the rate of gluconeogenesis?
- Glucagon
- Epinephrine
- Glucocorticoids
- Insulin
- ATP
Mad cow disease or bovine spongiform encephalopathy is a prion based disease.
Which among the following scientists was awarded the Nobel Prize for his study on the agent responsible for ‘mad cow disease’?
- Gertrude Elion
- J. Skou
- James Black
- Stanley Prusiner
- Paul Boyer
Aromatic amino acids refer to the amino acids possessing an aromatic ring.
Which of the following aromatic amino acids contains an ionizable side chain?
- Tyrosine
- Valine
- Phenylalanine
- Tryptophan
- Lysine
The protein primary sequence refers to the sequence of the constituent amino acids, the building blocks of a protein.
Who among the following scientists were noted for determining the first protein primary sequence?
- Watson and Crick
- Hershey and Chase
- Embden and Meyerhof
- Sanger and Tuppy
- Eduard and Buchner
Brassinosteroids are the typical growth-promoting phytosteroids.
The precursors for brassinosteroids are ________________.
- cholesterol
- campesterol
- ergosterol
- stigmasterol
- sitosterol