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
Digestive Enzyme Functions Matching
The question requires matching digestive enzymes from Column I with their specific functions listed in Column II.
Enzyme Function Analysis
- P. Erepsin: This enzyme, found in the intestinal juice, completes protein digestion by breaking down polypeptides into amino acids. Therefore, P matches with (iv).
- Q. Steapsin: This is a lipase enzyme primarily responsible for digesting fats (lipids) into fatty acids and glycerol. Therefore, Q matches with (iii).
- R. Pepsin: Secreted in the stomach, pepsin initiates protein digestion by breaking down large proteins into smaller peptides. Therefore, R matches with (i).
- S. Enterokinase: This enzyme, secreted by the small intestine, plays a crucial role in activating the pancreatic enzyme trypsinogen into its active form, trypsin. Therefore, S matches with (ii).
Correct Matching Summary
Based on the analysis, the correct matching is:
| Enzyme (Column I) | Function (Column II) | Match |
|---|---|---|
| P. Erepsin | (iv) converts polypeptides to amino acids | P - (iv) |
| Q. Steapsin | (iii) converts fat into fatty acid and glycerol | Q - (iii) |
| R. Pepsin | (i) converts proteins to peptides | R - (i) |
| S. Enterokinase | (ii) activates trypsinogen to trypsin | S - (ii) |
This corresponds to the matching: P-(iv), Q-(iii), R-(i), S-(ii).
Important Questions from Plant Biochemistry Enzymes Reactions
- 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 - During cellular respiratory process, pyruvate must be oxidized to acetyl CoA and $CO_2$ before it enters the citric acid cycle. The corresponding simplified equation is
Pyruvate + $NAD^+$ + CoASH $\longrightarrow$ Acetyl-S-CoA + NADH + $CO_2$
This oxidation reaction occurs in mitochondria and is carried out in presence of the enzyme
