Column-I Column-II P. Coenzyme 1. Holoenzyme + Apoenzyme Q. Holoenzyme 2. Non-protein part in an active enzyme R. Prosthetic group 3. Only the protein part in an active enzyme S. Apoenzyme 4. Cofactor in an enzymatic reaction 5. Apoenzyme + Prosthetic group 6. Holoenzyme + inorganic phosphate
Q-5
R-2
S-3
Enzyme Component Matching Solution
This solution explains the correct pairings between enzyme components (Column I) and their descriptions or compositions (Column II).
Understanding Enzyme Components
Enzymes are biological catalysts, often proteins, that require specific structures for activity. Key components include:
- Apoenzyme: The protein part of an enzyme, inactive by itself.
- Cofactor: A non-protein chemical compound required for an enzyme's biological activity. This can be an inorganic ion or an organic molecule (coenzyme or prosthetic group).
- Coenzyme: An organic non-protein compound that binds with an enzyme and is essential for its catalytic activity. Often considered a type of cofactor.
- Prosthetic group: A tightly bound cofactor that remains associated with the enzyme throughout the catalytic cycle. It is a specific type of non-protein part.
- Holoenzyme: The complete, catalytically active enzyme, consisting of an apoenzyme and its bound cofactor (coenzyme or prosthetic group).
Detailed Matching
- P. Coenzyme: A coenzyme functions as a cofactor in an enzymatic reaction. This matches item 4.
- Q. Holoenzyme: The holoenzyme is formed by the combination of the apoenzyme and its cofactor. Since a prosthetic group is a type of cofactor, the holoenzyme can be described as Apoenzyme + Prosthetic group. This matches item 5.
- R. Prosthetic group: This is a tightly bound non-protein part in an active enzyme. This matches item 2.
- S. Apoenzyme: The apoenzyme is defined as only the protein part in an active enzyme, lacking cofactor activity on its own. This matches item 3.
Final Matched Pairs
The correct pairings derived are:
- P - 4
- Q - 5
- R - 2
- S - 3
This leads to the selection P-4, Q-5, R-2, S-3.
Important Questions from Plant Biochemistry Enzymes Reactions
- Match the following digestive enzymes in Column I with their respective functions in Column II.
Column I Column II P. Erepsin (i) converts proteins to peptides Q. Steapsin (ii) activates trypsinogen to trypsin R. Pepsin (iii) converts fat into fatty acid and glycerol S. Enterokinase (iv) converts polypeptides to amino acids - Match the proteins in Column I with the organs in which they are maximally expressed in Column II.
Column I Column II P. Keratin (i) Liver Q. Surfactants (ii) Pancreas R. Pro-carboxypeptidase (iii) Lung S. Albumin (iv) Skin Identify the free radicals (marked as '?') in sequence from the inter-conversion of reactive oxygen species as shown below.
$O_2\rightarrow? \rightarrow H_2O_2 \rightarrow? \rightarrow H_2O$
P. $\mathrm{O}_2^{\bullet -}$
Q. $OH^-$
R. $HO_2^{-}$
S. $\ {}^{1}\mathrm{O}_2$
- Choose the CORRECT set of matches between group I and group II in relation to nitrogen fixation and assimilation
GROUP I GROUP II P. Nitrobacter 1. $NO_3^-$ $\rightarrow$ $NO_2^-$ Q. Nitrite reductase 2. $N_2$ $\rightarrow$ $2NH_3$ R. Nitrogenase 3. $NO_2^-$ $\rightarrow$ $NH_4^+$ S. Nitrate reductase 4. $NO_2^-$ $\rightarrow$ $NO_3^-$ - Select the CORRECT combination by matching Group-I with Group-II.
Group-I Group-II P. Photorespiration 1. Glutamate $\rightarrow$ 2-Oxglutarate Q. Respiration 2. Acetyl-CoA $\rightarrow$ Malonyl-CoA R. Amino acid degradation 3. 2-Oxglutarate $\rightarrow$ Succinyl-CoA S. Fatty acid synthesis 4. Glycine $\rightarrow$ Serine
