Discuss, Learn and be Happy דיון בשאלות

help brightness_4 brightness_7 format_textdirection_r_to_l format_textdirection_l_to_r

The alanine aminoacyl tRNA synthetase enzyme of E. coli recognizes the alanine tRNA only by an unusual G:U base pair at position 70 in the stem of the tRNA. In the laboratory, you make a copy of the alanine tRNA gene that is identical to the wildtype copy except that the anicodon sequence 5' - IGC -3' is replaced with the sequence 5' - UCA -3'. You then add this mutant tRNA gene back into a wildtype E. coli. As a result,

1
done
by
מיין לפי

Complete the following sentence. The covalent bond between a tRNA and its amino acid is catalysed:

1
done
by
מיין לפי

You have found an E. coli that is mutant at the gene encoding EF-Tu. The only effect of the mutation is to decrease the rate of hydrolysis of EF-Tu-GTP. The effect of this mutation will most likely be:

1
done
by
מיין לפי

In humans there are 64 codons. 61 of these code for amino acids. There are 20 amino acids. There are 31 tRNAs. How many different aminoacyl tRNA synthetases are there?

1
mood
by
מיין לפי

Look at the genetic code included with the exam. What is the minimum possible number of different tRNAs to be charged with Serine?

1
by
מיין לפי

Formation of peptide bonds during protein synthesis is catalysed by:

1
mood
by
מיין לפי

Which of the following are correct? Because of the differences in the translation machinery between Prokaryotes and Eukaryotes:

1
done
sentiment_very_satisfied
by
מיין לפי

Under conditions where methionine must be the first amino acid, what protein would be coded for by the following mRNA? 5'-CCUCAUAUGCGCCAUUAUAAGUGACACACA-3'

1
done
by
מיין לפי

Which best fits the process of translation

1
done
by
מיין לפי

This is an important step in translation. It is mediated by:

1
done
by
מיין לפי