MYTUTOR SUBJECT ANSWERS

458 views

What is a protein? How are proteins made?

Proteins, also known as polypeptides, are amino acid sequences. All proteins are made of amino acids.

Proteins exhibit variance. This is due to the fact that there can be a myriad of possible combinations: there are only 20 amino acids, but most polypeptides are composed of thousands and thousands of amino acids!

Polypeptides are formed on ribosomes (which are respectively made of (A) ribosomal RNA and (B) protein, for structural support).

Amino acids are linked via peptide bonds. A peptide bond occurs between the carboxyl group of an amino acid (-COOH) and the amino group of another (-NH3). It is a condensation reaction, and thus yields water.

When broken down (e.g. by protease enzymes), a reverse reaction occurs: hydrolysis. The peptide bond is broken, and water is taken up to restore the normal structure of an amino acid (regenerating the -COOH and the -NH3 ends).

Francesco G. GCSE Italian tutor, IB Philosophy tutor, GCSE Chemistry ...

1 year ago

Answered by Francesco, an IB Biology tutor with MyTutor


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

17 SUBJECT SPECIALISTS

£22 /hr

Victoria T.

Degree: Biomedical Sciences (Bachelors) - Queen Mary, London University

Subjects offered:Biology, Japanese+ 1 more

Biology
Japanese
French

“Hi, my name is Victoria. I was born in France and moved to London to study Biomedical Sciences. Having been in an international school, I am bilingual in French and English and learnt other languages like Japanese. Alongside, I was ab...”

£24 /hr

Anna W.

Degree: Medicine (Other) - Edinburgh University

Subjects offered:Biology, Physics+ 5 more

Biology
Physics
Dutch
Chemistry
.UKCAT.
-Personal Statements-
-Medical School Preparation-

“Hi! I am Anna and I am studying Medicine. I have done the IB (new syllabus) so I know all about the new curriculum, including IAs and Explorations! ”

£20 /hr

George R.

Degree: Biology with Industrial Experience (Bachelors) - Manchester University

Subjects offered:Biology, Zoology+ 6 more

Biology
Zoology
Psychology
Maths
Human Biology
French
English Literature
-Personal Statements-

“Hardworking and enthusiastic people person that loves the subjects I tutor and loves to learn as well as teach!”

About the author

Francesco G.

Currently unavailable: for new students

Degree: BSc Biomedical Science (Bachelors) - Kings, London University

Subjects offered:Biology, Science+ 9 more

Biology
Science
Philosophy and Ethics
Italian
Human Biology
Chemistry
.UKCAT.
.BMAT (BioMedical Admissions)
-Personal Statements-
-Medical School Preparation-

“Hello! My name is Francesco Grillo, I am a first-year Biomedical Science student in London, at King's College London. I am passionate about science, philosophy and languages.I was born in Rome (Italy). My first experience abroad was ...”

You may also like...

Posts by Francesco

What is a protein? How are proteins made?

What is existentialism?

Other IB Biology questions

Describe one example of transient polymorphism.

Outline the control of the heartbeat in terms of myogenic muscle contraction, the role of the pacemaker, nerves, the medulla of the brain and epinephrine (adrenaline).

How does DNA replication take place?

Discuss the potential benefits and potential harmful effects of one example of genetic modification.

View IB Biology tutors

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

mtw:mercury1:status:ok