MYTUTOR SUBJECT ANSWERS

213 views

Describe how antibiotic resistance occurs.

Firstly, antibiotic resistance has to be gained by a bacterium through the mutation of a gene. This can occur due to, for example, the overuse of antibiotics or failure to complete a full course of antibiotics. A random mutation in the DNA of a bacterium may lead to a gene that provides resistance to a certain antibiotic. This is the first stage of gaining antibiotic resistance.

The next stage is the multiplication of this gene. This can occur through asexual reproduction of the resistant bacterial cell, or through a process called 'conjugation'. This is where one bacterium - in this case, the resistant cell - extends a pilus to another bacterium, and transfers a plasmid (a circular DNA sequence) to the other cell through replication of this DNA. The receptive cell now also contains a copy of the resistance gene and can pass it onto other bacterial cells, through asexual reproduction or conjugation. Antibiotic resistance can then spread throughout the population, the species, and onto other species, as bacteria can often conjugate outside their own species.

Anita H. GCSE Biology tutor, A Level Biology tutor, GCSE German tutor...

5 months ago

Answered by Anita, an A Level Biology tutor with MyTutor


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

150 SUBJECT SPECIALISTS

£20 /hr

Imogen W.

Degree: Human Sciences (Bachelors) - Oxford, Magdalen College University

Subjects offered: Biology, Science+ 4 more

Biology
Science
Human Biology
Chemistry
-Personal Statements-
-Oxbridge Preparation-

“my true passion is the science aspect of my course and I love spreading this enthusiam to others”

£20 /hr

Ben A.

Degree: Medicine (Bachelors) - University College London University

Subjects offered: Biology, Physics+ 6 more

Biology
Physics
Maths
Chemistry
.UKCAT.
.BMAT (BioMedical Admissions)
-Personal Statements-
-Medical School Preparation-

“Hello,I am a first year medical student at University College London, When I was in sixth form, I helped tutor the younger years and I always enjoyed it, so I decided to keep it on in my university years.My subjects are the three m...”

£22 /hr

Greg H.

Degree: Biomedical Science (Infectious Diseases) (Bachelors) - Edinburgh University

Subjects offered: Biology, French+ 1 more

Biology
French
English

“ About Me Hi! I'm Greg. I'm currently studying Biomedical Science at The University of Edinburgh, and I have a real passion for science and especially biology. I offer tuition in Biology and French from absolute beginners...”

About the author

Anita H.

Currently unavailable: for regular students

Degree: Biological Sciences with Study in Continental Europe (German) (Bachelors) - Birmingham University

Subjects offered: Biology, German

Biology
German

“I'm a final year Biosciences/German student at the University of Birmingham. I've known I wanted to study Biology since I was in Year 6, in one form or another, and that passion has only grown stronger over the years I've been studyin...”

MyTutor guarantee

You may also like...

Posts by Anita

'ei' or 'ie'?

Describe how antibiotic resistance occurs.

What is osmosis and why does it occur?

When do I use 'sein' and when do I use 'haben' in the past tense?

Other A Level Biology questions

How does oxidative phosphorylation work in respiration

What are the methods of immobilising enzymes?

How does the Calvin Cycle in photosynthesis work?

Describe how fertiliser run-off can cause damage to a lake's ecosystem.

View A Level 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