List of top Questions asked in ICAR AIEEA (PG)- 2022

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R
Assertion A : The uncompetitive inhibitors bind only to the enzyme-substrate (ES) complex and not to the free enzyme.
Reason R : Binding of the substrate to the enzyme causes a change in its conformation, which reveals the inhibitor-binding site.
In light of the above statements, choose the correct answer from the options given below
Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R
Assertion A : The presence of thick and fleshy water-storing leaves or stems in CAM plants enhances their photosynthetic efficiency.
Reason R : The photosynthetic rates in CAM plants are limited by their vacuolar storage capacity, as malate synthesized at night through carboxylation of PEP has to be stored in the large central vacuole until the daytime.
In light of the above statements, choose the correct answer from the options given below
Match List I with List II
List I (Inhibitor):
A. Competitive
B. Uncompetitive
C. Noncompetitive
D. Mixed
List II (Changes observed in the Kinetic parameters):
I. No effect on the apparent value of the \(V_{\text{max}}/K_m\) ratio but apparent value of \(V_{\text{max}}\) gets affected.
II. The apparent values of both the \(V_{\text{max}}/K_m\) ratio and \(V_{\text{max}}\) are altered but by the same magnitude.
III. The apparent values of both the \(V_{\text{max}}/K_m\) ratio and \(V_{\text{max}}\) are altered but by the different magnitude.
IV. The \(V_{\text{max}}/K_m\) ratio decreases but no effect on the apparent value of \(V_{\text{max}}\).
V. No changes observed in any of the kinetic parameter
Choose the correct answer from the options given below:
Which of the followings is not true about the DNA denaturation process?
Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R
Assertion A : Although most of the animals cannot digest $\alpha$-keratin but clothes moth larvae can very easily do so.
Reason R : The clothes moth larvae has a very high concentration of mercaptans in their digestive tract that helps them to cleave disulfide bonds abundantly present in $\alpha$-keratin.
In light of the above statements, choose the correct answer from the options given below:
In globular proteins, $\alpha$-helices have an average span of 12 residues, which would correspond to how much length of the helix?
Which of the following molybdenum-containing enzymes do not contain molybdopterin as its cofactor?
Which of the following enzymes is involved in the plant defense against herbivores and requires ascorbic acid as its cofactor?
Match List I with List II
List I (Enzyme):
A. Glutamate dehydrogenase
B. GS
C. GOGAT
D. Glutamate decarboxylase

List II (Reaction catalyzed):
I. Catalyzes ATP-dependent conversion of glutamate to glutamine using ammonium as substrate.
II. Catalyzes reductive amination of 2-oxoglutarate to form glutamate using ammonium as substrate.
III. Catalyzes the synthesis of two molecules of glutamate from glutamine and $\alpha$-ketoglutarate.
IV. Catalyzes the synthesis of GABA from glutamate.
V. Catalyses synthesis of aminolevulinic acid in the chlorophyll biosynthetic pathway.

Choose the correct answer from the options given below:
Which of the following molecules functions as provitamin $\text{D}_3$?}
Match List I with List II
List I (Name of the fatty acid):
A. Ricinoleic acid
B. Linolenic acid
C. Palmitoleic acid
D. Erucic acid

List II (Type of the fatty acid):
I. $\omega$-3
II. $\omega$-6
III. $\omega$-7
IV. $\omega$-9
V. Hydroxylated

Choose the correct answer from the options given below:
Which of the following statements about the enzyme acetyl $\text{CoA}$ carboxylase (ACCase), involved in the biosynthesis of fatty acids, is incorrect?}
How does the effectiveness of a competitive inhibitor gets affected under high physiological concentration of the substrate?
The enzyme Papain, derived from papaya, is commonly used in food industry as a meat tenderizer. It is a/an:
The vitamin $\text{B}_{12}$ deficiency will lead to the accumulation of which of the following metabolites?}
Most soluble Endoplasmic Reticulum-resident proteins have a C-terminal motif/tag viz. KDEL. The sequence of amino acids in this motif/tag is ?
The term oligotrophic in lake ecosystem refers to [Question ID = 1560][Question Description = 220_6_PHSC_AUG22_Q120]
The pH of a glycine solution, in which the $\alpha\text{-NH}_3^+$ group (having $\text{pK}_a$ 9.6) is one third dissociated would be equal to [given $\log 2 = 0.3010$ and $\log 3 = 0.4771$]}
In Franz Knoop's classic experiment, which indicated that fatty acids are metabolically oxidized at the $\beta$-carbon atom, $\omega$-phenyl labeled fatty acids containing odd number of carbon atoms are broken down to which of the following metabolite?
Which of the following acids is not a polyprotic acid?
The repeating unit in the polysaccharide component of peptidoglycans present in the bacterial cell wall is a
The solubility of gases in water can be calculated using [Question ID = 1557][Question Description = 217_6_PHSC_AUG22_Q117]
UN conference on human environment was held in the year [Question ID = 1559][Question Description = 219_6_PHSC_AUG22_Q119]
The first organic pesticide to be used commercially was [Question ID = 1554][Question Description = 214_6_PHSC_AUG22_Q114]
Bordeaux mixture is [Question ID = 1555][Question Description = 215_6_PHSC_AUG22_Q115]