1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kodGreya [7K]
3 years ago
5

Starting translation at the authentic (correct) start codon is essential for translation of the correct polypeptide. Errant tran

slation starting at the wrong codon, or even at the wrong nucleotide of the start codon, may produce an abnormal polypeptide and result in a nonfunctional protein. Compare and contrast the mechanisms used by bacteria and eukaryotes to identify the authentic start codon during translation initiation.
Biology
2 answers:
muminat3 years ago
7 0

Answer:

Answered below

Explanation:

A codon is a sequence of nucleotide triplets of messenger ribonucleic acids, or deoxyribonucleic acid. The start codon is defined as the first codon of a messenger ribonucleic acid transcript that is being translated by the ribosomes.

The ability to initiate the right AUG codon determines the correctness of translation. In eukaryotes, this is accomplished by scanning mechanism. In the scanning mechanism, the ribosomal subunit attached to the five prime end of the messenger ribonucleic acid and inspects base to base for an AUG using complementarity with the anticodon of methionyl indicator transfer RNA as the key to identifying AUG.

The start codon always code for a modified methionine in bacteria and codes for methionine in eukaryotes. Alternate start codons are found in bacteria and eukaryotes . They are different from standard AUG codon and are initiated by a separate transfer ribonucleic acid. They are rare in eukaryotes but common in bacteria.

Anna [14]3 years ago
3 0

Answer:

The method of identifying the correct codon for transcription is by means of the control STOP codons, which are those that face point mutations of the second, third or first position (the third position is the most imperceptible and usually goes unnoticed) they generate a STOP or stop of the process, causing a premature termination of the translation which causes an incomplete protein to be translated and, in most cases, not functional ... There are also start codons that are those that are in charge of start said process.

The start codon is not only a signal to start the translation, but it is translated effectively, so that, at least before their proteolytic processing, all eukaryotic proteins have a methionine at their amino terminus, which is the amino acid corresponding to the codon according to the genetic code. In prokaryotes, said methionine is modified as N-formylmethionine. This does not mean that all the components of the proteome possess said methionine at its end, since it is common for it to be enzymatically cleaved

Explanation:

Although AUG is the most widely used start codon in eukaryotes, there are other codons that are also valid as the start of translation. Such exceptions are much more common in prokaryotes, where GUG and UUG can be used as alternative translation start codons. For example, Escherichia coli, a bacterium in the Enterobacteriaceae family, uses ATG (AUG in RNA) in 83% of cases, GTG in 14% (GUG in the transcript) and TTG in 3% (UUG in RNA) and still someone else.

You might be interested in
One of the common surface features of karst landscapes are sinkholes, also known as ________.
cestrela7 [59]
Dolines. I just looked it up on Quizlet. If you need answers, make an account on Quizlet and get the answers on their flash cards.
4 0
3 years ago
Describe what brownfields are and how they can be assessed.
ehidna [41]
Definition-
Real property ,the expansion, redevelopment, pollutant, or contaminant.
They can be located anywhere and can be very small
5 0
3 years ago
Read 2 more answers
Which of the following is a characteristic of the second stage with a demographic transition
Montano1993 [528]
My Answer: The death rate begins to fall, but birth rates remain high for a time.
Why?: Many of our countries are in Stage 2, that is why the government is concerned about our overpopulation.
Hope I helped! :D

5 0
3 years ago
URGENT PLEASE HELP
natta225 [31]
The answer is D. corals are imperative to damage
7 0
3 years ago
Pavlov's experiment was a typical case of classical conditioning because _____. an instinctive behavior was tied to a different
LiRa [457]
The correct answer to the question stated above is the first option: <span>an instinctive behavior was tied to a different stimulus.
</span>
Pavlov's experiment was a typical case of classical conditioning because an instinctive behavior was tied to a different stimulus.
3 0
3 years ago
Read 2 more answers
Other questions:
  • A pair of fruit flies reproduces and has 1,000 offspring. All 1,000 of the offspring have the alleles Gg. What is the most likel
    12·1 answer
  • What does the term “membrane bound organelles mean?” What cell type are they found in?
    10·1 answer
  • Which of the following is not transported by the circulatory system?
    11·2 answers
  • The structure of a certain blood protein was compared among four organisms. Each organism was compared to each of the other orga
    10·1 answer
  • What evidence supports the Big Bang theory of the origin of the universe
    6·1 answer
  • Who was the scientist that first discovered cells by using the microscope
    7·2 answers
  • The two energy containing compounds created in the light-dependent reactions that are used in the light-independent reactions ar
    9·1 answer
  • Which phrase best explains the many varieties of dogs at a dog show? A) cross pollination B) selective breeding C)survival of th
    9·1 answer
  • What is a secondary crime scene?
    11·1 answer
  • Which genetic locus is not used for calculating the rarity of a DNA profile?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!