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Proteins_ Amino Acids and Peptide Bonds MCQs for Competitive Exams

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Proteins_ Amino Acids and Peptide Bonds MCQs for Competitive Exams

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Topic Notes: Proteins_ Amino Acids and Peptide Bonds

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Proteins_ Amino Acids and Peptide Bonds MCQs in Biology are useful for candidates who need targeted practice for CSS, PMS, FPSC, PPSC, NTS, entry tests, and other competitive exams in Pakistan. This topic page is designed for quick revision, repeated practice, and exam-focused preparation.

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11
Which specific chemical bond links amino acids together to form the primary structure of protein chains?
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12
Why is water considered a dipolar molecule?
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13
Among the following options, which natural fiber is recognized for having the highest tensile strength?
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14
Which amino acid serves as the primary precursor for the synthesis of melanin pigment in humans?
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15
Evaluate the following statements regarding plant-derived alkaloids: 1. Coffee seeds contain significant caffeine. 2. Tobacco contains nicotine. 3. Cocoa and chocolate contain theobromine. Which are true?
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16
Scurvy is a deficiency disease characterized by weakness, anemia, gum disease, and skin hemorrhages; which nutrient deficiency causes this condition?
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17
Which essential nutrient is notably absent or present in negligible amounts in a standard chicken egg?
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18
Which biochemical process involves the removal of an amino group from an amino acid molecule?
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19
Proteins are essential structural and functional components of which biological systems?
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20
What is the approximate percentage of oxygen by mass in the human body?
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