Q. No.| Assertion (A): | An adapter molecule, that on one hand can read the genetic code and on the other hand can bind to specific amino acids, is required for the translation of proteins. |
| Reason (R): | Amino acids have no structural specialties to read the code uniquely. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are false. |
| 3. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 4. | (A) is true but (R) is false. |
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In actual structure, tRNA is a compact molecule that looks like a/an:
| 1. | Cloverleaf | 2. | Railroad |
| 3. | Inverted L | 4. | Alpha helix |
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1. 5’-AGU-3’ and 5’-UAC-3’
2. 3’-AGU-5’ and 3’-UAC-5’
3. 5’-TCA -3’ and 5’-ATG-3’
4. 3’-TCA -5’ and 3’-ATG-5’
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| A | B | C | D | |
| 1. | Amino acid binding site | DHU loop | Anticodon | TψC loop |
| 2. | Amino acid binding site | TΨC loop | Anticodon | DHU loop |
| 3. | Anticodon | DHU loop | Amino acid binding site | TΨC loop |
| 4. | Anticodon | TΨC loop | Amino acid binding site | DHU loop |
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| Assertion (A): | In the first phase of translation, it is important that the charging of tRNA in the presence of ATP takes place. |
| Reason (R): | The formation of a peptide bond requires energy. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are false. |
| 3. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 4. | (A) is true but (R) is false. |
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The structure of the ribosome is made of:
| 1. | rRNA and Proteins |
| 2. | rRNA and Polysaccharides |
| 3. | mRNA, rRNA and tRNA |
| 4. | RNA, DNA and Proteins |
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Which of the following anticodons will hybridize with the mRNA codon 5’ – AUG – 3’?
| 1. | 5’ – UAC – 3’ | 2. | 5’ – TAC – 3’ |
| 3. | 3’ – UAC – 5’ | 4. | 3’ – TAC – 5’ |
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Which of the following acts as a ribozyme for peptide bond formation in bacteria?
| 1. | 5s rRNA | 2. | 23s rRNA |
| 3. | 16s rRNA | 4. | 5.1s rRNA |
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