MYTUTOR SUBJECT ANSWERS

827 views

Where did mitochondria come from?

Mitochondria are a fascinating organelle, which we, as humans, rely on for so much. They are where the electron transport chain occurs, where ADP is converted to ATP with the high-energy bond we utilise everywhere in the body. But what if I told you those mitochondria may not be a truly eukaryotic organelle?

Mitochondria can divide independent of their host; this is because they have their own genome. No other organelle, in humans anyway, can do this. Even more interesting is that if you look at the mitochondrial DNA it is frighteningly similar to some bacterial DNA from which it is thought to derive from.

So where did it come from?

The truth is that nobody really knows, although there are some theories. The  endosymbiosis hypothesis suggests that the function of mitochondria was beneficial to humans and the human host was also beneficial to the mitochondrion. 

If this is an evolutionary process, what is next?

Whilst I can't answer that, I can suggest following on from the endosymbiosis hypothesis. Further research has proven that not all of the mitochondrial proteins required for ATP synthesis are present in the mitochondrial genome; these proteins have relocated to the cell's genome. What I would suggest is that perhaps, over a long period of time, more and more of the once-mitochondrial proteins will relocate to the cell's genome until one day the cell can produce all of the proteins required for the mitochondria's function.

 

Patrick Q. Mentoring -Medical School Preparation- tutor, GCSE Chemist...

2 years ago

Answered by Patrick, an A Level Biology tutor with MyTutor


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

231 SUBJECT SPECIALISTS

£30 /hr

Zoe B.

Degree: Bsc Psychology (Bachelors) - Exeter University

Subjects offered:Biology, Psychology

Biology
Psychology

“2nd Year Psychology Undergraduate at Exeter. 1 year experience tutoring A-level Biology and Psychology”

£30 /hr

Vicky H.

Degree: Dentistry (Masters) - Leeds University

Subjects offered:Biology, Science+ 12 more

Biology
Science
Maths
Mandarin
Human Biology
English Literature
English Language
Chemistry
.UKCAT.
.BMAT (BioMedical Admissions)
-Personal Statements-
-Oxbridge Preparation-
-Medical School Preparation-

“Hi I'm Vicky, I'm a 2nd year dental student at the University of Leeds. I am friendly and patient and have a love for science, maths and teaching.”

£26 /hr

Victoria S.

Degree: Physiology (Bachelors) - Liverpool University

Subjects offered:Biology, Maths

Biology
Maths

“Here to help with last minute revision prep! I'm Tory, in my final year studying Physiology at Uni of Liverpool and am a 5* rated tutor here to suit your needs.”

About the author

Patrick Q. Mentoring -Medical School Preparation- tutor, GCSE Chemist...

Patrick Q.

Currently unavailable: for regular students

Degree: Medicine (Bachelors) - Bristol University

Subjects offered:Biology, Science+ 2 more

Biology
Science
Chemistry
-Medical School Preparation-

“Top tutor from the renowned Russell university group, ready to help you improve your grades.”

You may also like...

Posts by Patrick

How can I help you get in to medical school?

I'm doing GCSEs, isn't it too early to be thinking about applying for medicine?

So, what actually is a mole?

Where did mitochondria come from?

Other A Level Biology questions

Describe the role of lipids.

What is the difference between type I and type II diabetes?

Explain how skeletal muscle contraction is stimulated

Why is the genetic code described as being universal?

View A Level 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