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Biology
Biomolecules
107 questions from 35 papers, each with its answer.
- 107 questions
- 35 papers
- 3.03% of Biology
Lipids Found in Living Tissues
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Lecithin, a small molecular weight organic compound found in living tissues, is an example of:Lecithin (phosphatidylcholine) is a phospholipid. It is an important component of cell membranes and is found abundantly in living tissues.
Functions of Proteins (GLUT-4, Insulin, Trypsin, Collagen)
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Match List-I with List-II regarding proteins and their functions.
Pick the matching item from Column II for each row.
Column I
- A. GLUT-4
- B. Insulin
- C. Trypsin
- D. Collagen
Column II
- I. Hormone
- II. Enzyme
- III. Intercellular ground substances
- IV. Enables glucose transport into cell
Correct answer: A → IV, B → I, C → II, D → III
GLUT-4 – enables glucose transport into cells Insulin – hormone Trypsin – enzyme Collagen – intercellular ground substance Correct match: A-IV, B-I, C-II, D-III.
Enzymes and the Bonds They Act Upon
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Match List I with List II regarding enzymes and the type of bond they hydrolyse.
Pick the matching item from Column II for each row.
Column I
- A. Lipase
- B. Nuclease
- C. Protease
- D. Amylase
Column II
- I. Peptide bond
- II. Ester bond
- III. Glycosidic bond
- IV. Phosphodiester bond
Correct answer: A → II, B → IV, C → I, D → III
Lipase – hydrolyses ester bonds in lipids Nuclease – hydrolyses phosphodiester bonds in nucleic acids Protease – hydrolyses peptide bonds in proteins Amylase – hydrolyses glycosidic bonds in carbohydrates (starch) Correct match: A-II, B-IV, C-I, D-III.
Catalytic Cycle of Enzyme Action
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Regarding catalytic cycle of an enzyme action, select the correct sequential steps: A. Substrate enzyme complex formation. B. Free enzyme ready to bind with another substrate. C. Release of products. D. Chemical bonds of the substrate broken. E. Substrate binding to active site. Choose the correct answer from the options given below:The catalytic cycle of an enzyme: 1. The substrate binds to the active site of the enzyme (E). 2. The enzyme-substrate complex is formed (A). 3. The active site, in close proximity to the substrate, breaks the chemical bonds of the substrate (D). 4. The enzyme releases the products of the reaction (C). 5. The free enzyme is ready to bind with another molecule of substrate (B). So the sequence is E, A, D, C, B.
That is every question in Biomolecules for this filter.
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