MYTUTOR SUBJECT ANSWERS

353 views

How do you explain the process of translation?

Enzymes which are specific to different tRNA types catalyse the bonding of amino acids to tRNA molecules, which requires ATP for energy.

There are 4 stages to translation: initiation, elongation, translocation and termination.

During initiation, the small ribosomal subunit binds to the 5' end of mRNA and moves along it until it reaches the start codon (which is AUG). Then the tRNA molecule binds to the codon (via its anticodon), due to complementary base pairing (A-T, C-G). After, the large ribosomal subunit binds at the P-site of tRNA, forming a complex.

During elongation, a second tRNA molecule pairs with the next codon at the ribosomal A-site and the amino acid is covalently bonded to the amino acid at the P-site.

During translocation, the ribsome moves along to the next codon, and the first tRNA molecule is moved to the E-site and is released. So, a new tRNA molecule enters the now empty A site and the process is repeated, synthesising a polypeptide chain in a 5'-3' direction.

(If multiple ribsomes act on the same chain they form a polysome)

Finally, termination occurs when the stop codon is reached. This is a codon that does not code for any amino acid. The polypeptide chain is released and the ribosome disassembles to be used again for another chain.

Lucy W. GCSE Biology tutor, IB Biology tutor, GCSE Maths tutor, GCSE ...

10 months ago

Answered by Lucy, an IB Biology tutor with MyTutor


Still stuck? Get one-to-one help from a personally interviewed subject specialist

22 SUBJECT SPECIALISTS

£20 /hr

Catherine H.

Degree: Biochemistry with Psychology (Bachelors) - Exeter University

Subjects offered: Biology, Science+ 1 more

Biology
Science
Chemistry

“I am a third year student at the University of Exeter studying for a BSc in Biochemistry with Psychology. I find science really exciting and would love to show you why! These tutoring sessions will be tailor-made to you. Whatever yo...”

£20 /hr

Marek W.

Degree: Biochemistry with German for Science (Bachelors) - Imperial College London University

Subjects offered: Biology, German+ 2 more

Biology
German
Chemistry
-Personal Statements-

“Science?- Yes, please! Who I am? I am Biochemistry with German student at Imperial College London. I am patient and friendly to explain you things that you are struggling with. In my free time I play tennis and dance Punjabi. I have b...”

MyTutor guarantee

£20 /hr

Fanis M.

Degree: biochemistry with proffesional/Industrial experience (Bachelors) - Manchester University

Subjects offered: Biology, Chemistry

Biology
Chemistry

“Second year biochemistry undergraduate, tutoring for IB/IGCSE chemistry and biology.”

About the author

Lucy W.

Currently unavailable:

Degree: Bsc Biological Sciences (Bachelors) - Exeter University

Subjects offered: Biology, Spanish+ 1 more

Biology
Spanish
Maths

“I am currently studying Biological Science at Exeter University - a course that I absolutely love.  I like to think I am a patient and considerate person, having experience tutoring younger family members, and other students whilst I ...”

You may also like...

Posts by Lucy

How do you explain the process of translation?

How is blood pumped around the body through the heart?

What is the best way to solve simultaneous equations?

Other IB Biology questions

Explain the process of transcription in Eukaryotes

Outline the precautionary principle.

How does the process of transcription work?

State the source, substrate, products and optimum pH of one amylase, one protease, and one lipase

View IB Biology tutors

Cookies:

We use cookies to improve our service. By continuing to use this website, we'll assume that you're OK with this. Dismiss

mtw:mercury1:status:ok