Please answer and correct all false statements. 15) Which of the following featu
ID: 692684 • Letter: P
Question
Please answer and correct all false statements.
15) Which of the following features are characteristic of the translation process. Assume these occur in E. coli bacteria unless otherwise stated? If the feature is not true, alter the feature so that it is true (12 pts). a. Occurs on the surfaces of mitochondria b. The first amino acid incorporated is the amino terminus e. The fist amino acid incorporated is methionine. d. Amino acids are covalently attached to the tRNA through an ester bond. e. During elongation, the initial placement of the amino acid is the A-site of the ribosome. It is possible for transeription of a single molecule of RNA tocur t thstime as this RNA molecule is being used for translation in eukaryotic cells.Explanation / Answer
a.
Translation or protein synthesis occurs on surface of ribosomes but not on mitochondria. E. coli is a prokaryote and do not mitochondria but contains ribosomes. The statement is not true.
b.
During protein synthesis the first amino acid is recruited in carboxy terminus or 3' end. The statement is nottrue.
c.
The first amino acid recruited would be methionine in eukaryotes and formyl methionine in bacteria or prokaryotes. The statement is not true.
d.
The amino acid is covalently attached to tRNA at terminal adenosine through an ester linkage. The statement is true.
e.
During elongation step of translation, the amino acid is initially placed in A - site. The statement is true.
f.
In eukaryotic cells, transcription occutrs in cytoplasm and then translation begins on ribosomes but do not occur simultaneously while in prokaryotes transcription and translation both occur in cytoplasm simultaneously. The statement is not true.