List of top Questions asked in ICAR AIEEA (PG)

Match List-I with List-II

List-I (Mineral) & List-II (Deficiency Symptom)
(A) Manganese & (IV) Poor wound healing due to the inactivation of Prolidase enzyme
(B) Selenium & (III) Enhanced oxidative stress
(C) Magnesium & (II) Poor Vitamin D status due to lesser formation of biologically
& active form of Vitamin D
(D) Molybdenum & (I) Neurological abnormalities due to sulfite oxidase deficiency

Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A) : The CAM plants undergo night time acidification and day time deacidification.
Reason (R) : The CAM plants take up $\text{CO}_2$ during day time, store it in the form of malate in vacuoles and break it down to release $\text{CO}_2$ in the night time.
In a nucleotide sequence ATGC, which of the following nucleotide has the unlinked 5' - OH?
Some of the exceptional properties of regulatory/allosteric enzymes are:
(A) Their Kinetics do not obey the Michaelis-Menten equation.
(B) They are mostly monomeric in nature.
(C) They have more than one substrate binding sites and the substrate binding to different sites is mutually independent, exclusive and noncooperative.
(D) Binding of effector molecules to them may lead to their activation or inhibition.
Match List-I with List-II

List-I (Name of the component) & List-II (Vitamin/Coenzyme)
(A) Pantothenic acid & (II) Coenzyme A
(B) Para-Amino Benzoic Acid (PABA) & (III) Folic acid
(C) Ribose & (I) NAD
(D) Pentanoic acid & (IV) Lipoic acid

Which of the following interventions would result in enhanced chromatographic separation?
(A) Increasing the number of theoretical plates
(B) Decreasing the Height Equivalent to a Theoretical Plate (HETP)
(C) Decreasing the column height
(D) Decreasing the size of the particles used to pack a column
The synthesis and/or activity of the nitrogenase enzyme gets stimulated by which of the following conditions?
Which of the following amino acids in a protein or peptide does not contribute significantly towards its UV absorption at 280 nm?
Match List-I with List-II

List-I (Name of the lipid) & List-II (Nature of the lipid)
(A) Ceramide & (I) Ether glycerophospholipid
(B) Cerebroside & (IV) Neutral Glycosphingolipid
(C) Ganglioside & (II) Acidic (charged) glycosphingolipid
(D) Platelet Activating Factor & (III) Structural parent of all sphingolipids

Which of the following regions of Nitrate reductase (NR) enzyme is extremely important for the 14-3-3 protein-mediated posttranslational regulation of its activity?
Match List-I with List-II

List-I (Inhibitor/Redox carrier in ETC) & List-II (Action)
(A) Amytal & (I) Inhibits FAD-linked oxidation
(B) Antimycin & (II) Inhibits $\text{NAD}^+$-linked oxidation
(C) Tetramethyl-p-phenylenediamine & (III) Completely inhibits oxidation of all
(TMPD) & electron donors
(D) Sodium azide & (IV) Transfers electrons directly to
& Cytochrome C
Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A) : The "Randle Cycle" describes the inhibition of the glycolysis by fatty acid oxidation.
Reason (R) : Oxidation of fatty acids increases the concentration of citrate that in turn inhibits the phosphofructokinase enzyme of glycolytic pathway.
In light of the above statements, choose the correct answer from the options given below.
The chemical identity of Oxygen Evolving Centers (OEC) present in the Photosytem-II of plants and cyanobacteria is:
The energetic efficiency (in terms of number of ATP equivalents per absorbed photon) of non-cyclic electron transport process in photosynthesis, after taking into account the ATPs yielded by NADPH produced in it, is:
The pyruvate-phosphate dikinase (PPDK) is a key enzyme of photosynthesis and catalyses a reaction similar to the one catalyzed by the pyruvate kinase (PK)-a glycolytic enzyme. Which of the following statements about these two enzymes is true?
During glycolysis, the enzyme phosphoglycerate mutase catalyses the conversion of 3-phosphoglycerate (3PG) to 2-phosphoglycerate (2PG) through formation of 2,3-bisphosphoglycerate (2,3-BPG) intermediate. The phosphoryl group to 3PG for the formation of 2,3-BPG is transferred from which of the followings:
Match List-I with List-II

List-I (Coenzyme/Prosthetic group of PDH) & List-II (Location on Multienzyme Complex)
(A) Nicotinamide adenine dinucleotide & (I) Bound to Dihydrolipoyl dehydrogenase (E3)
(B) Lipoic acid & (II) Covalently linked to a Lysine on E2
(C) Coenzyme A & (III) Substrate for E2
(D) Flavin adenine dinucleotide (FAD) & (IV) Substrate for E3
The catalytic center of which of the following protease families consists of a catalytic triad of aspartate, histidine and serine ?
The first three steps of the $\beta$-oxidation pathway of fatty acyl-CoA, chemically resemble the citric acid cycle reactions carrying out which of the following biochemical conversion?
Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A) : The addition of fluoride to fermenting yeast extracts causes the buildup of 3-phosphoglycerate and 2-phosphoglycerate.
Reason (R) : The fluoride strongly inhibits the enolase enzyme in the presence of inorganic phosphate ($\text{P}_i$) by forming a tightly bound complex with the $\text{Mg}^{2+}$ at the enzymes's active site.
In light of the above statements, choose the correct answer from the options given below.
Match List-I with List-II

List-I (Name of the enzyme) & List-II (Role in the fatty acid oxidation)
(A) 2,4-dienoyl-CoA reductase & (I) Involved in the $\alpha$-oxidation of branched fatty acids
(B) Phytanoyl- CoA hydroxylase & (II) Involved in the oxidation of unsaturated fatty acids
(C) Acyl-CoA oxidase & (III) Involved in the $\omega$-oxidation of medium chain fatty acids
(D) Cytochrome P450 & (IV) Involved in the peroxisomal $\beta$-oxidation
Match List-I with List-II

List-I (Reaction catalyzed/Name of the enzyme) & List-II (Class of enzyme)
(A) Formation and removal of carbon-carbon double bonds & (I) Ligase
(B) Amino acyl $-$ tRNA synthetase & (II) Hydrolase
(C) Transamination & (III) Lyase
(D) Removal of fatty acids from triglycerides & (IV) Transferase
The number of stereoisomers for n-carbon aldoses and ketoses respectively are:
The Old Yellow Enzyme (OYE), isolated by Warburg and Christian from brewers' bottom yeast in 1932, has been shown to comprise of a colourless apoprotein and a yellow cofactor. Subsequent identification of the nature of this yellow cofactor demonstrated that OYE is a(an):
Match List-I with List-II

List-I (Molecule) & List-II (Type of peptide)
(A) Aspartame & (I) Tripeptide
(B) Glutathione & (II) Tetrapeptide
(C) Oxytocin & (III) Nonapeptide
(D) Endomorphin & (IV) Dipeptide