Variations in proteins are due to:
1. Sequence of amino acids
2. Number of amino acids
3. R–group
4. None
Anticodon occurs in:
1. t-RNA
2. m-RNA
3. rRNA
4. DNA
In a three-dimensional view, the molecule of t-RNA is:
1. | L-shaped | 2. | S-shaped |
3. | Y-shaped | 4. | E-shaped |
A sequence of how many nucleotides in messenger RNA make a codon for an amino acid:
1. Four
2. One
3. Two
4. Three
Which form of RNA has a structure resembling clover leaf?
1. hn-RNA
2. m-RNA
3. t-RNA
4. r-RNA
Protein synthesis in an animal cell occurs:
1. | On ribosomes present in cytoplasm as well as in mitochondria |
2. | On ribosomes present in the nucleolus as well as in the cytoplasm |
3. | Only on ribosomes attached to the nuclear envelope and endoplasmic reticulum |
4. | Only on the ribosomes present in the cytosol |