Genetics - Section 3 Multiple Questions and Answers.
Exercise Questions ::
Genetics
Published by:Rehana Akram
22. | The primary structure of the protein represents |
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| A. | linear sequence of amino acids joined by peptide bond |
| B. | The 3-dimensional structure of protein |
| C. | the helical structure of protein |
| D. | subunit structure of protein |
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Published by:Rehana Akram
23. | Which of the following statements about amino acids is correct? |
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| A. | Amino acids are classified according to the structures and properties of their side chains. |
| B. | Amino acids in proteins are mainly in the D-configuration. |
| C. | Amino acids are unchanged at neutral pH |
| D. | Twenty four amino acids are commonly used in protein synthesis. |
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Published by:Rehana Akram
24. | Which type of bonding is responsible for the secondary structure of proteins? |
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| A. | Disulfide bridge between cysteine residues. |
| B. | Peptide bonds between amino acids. |
| C. | Hydrogen bonding between the C=O and N-H groups of peptide bonds. |
| D. | Salt bridge between charged side chains of amino acids. |
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Published by:Rehana Akram
25. | Which of the following most accurately describes how secondary structure in proteins is stabilized? |
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| A. | Through ionic bonds operating between oppositely charged amino acid side chains. |
| B. | Through covalent bonds joining different parts of the peptide backbone. |
| C. | Through hydrogen bonds between different amino acids side chains. |
| D. | Through hydrogen bonds joining different parts of the peptide backbone. |
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Published by:Rehana Akram
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