MYTUTOR SUBJECT ANSWERS

555 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...

8 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

172 SUBJECT SPECIALISTS

£26 /hr

Abigail M.

Degree: Plant Evolution and Ecology (Doctorate) - Oxford, Jesus College University

Subjects offered:Biology, Geography+ 5 more

Biology
Geography
Extended Project Qualification
Environmental Studies
Chemistry
-Personal Statements-
-Oxbridge Preparation-

“**AVAILABLE NOW FOR EXAM REVISION** I'm a PhD student and undergraduate tutor in Biology at the University of Oxford. ”

Sahil M. A Level Biology tutor, GCSE Biology tutor, A Level Chemistry...
£22 /hr

Sahil M.

Degree: Medicine (Bachelors) - Manchester University

Subjects offered:Biology, Spanish+ 3 more

Biology
Spanish
Maths
Chemistry
-Medical School Preparation-

“Hello! My name is Sahil and I am currently a medical student at the University of Manchester. I am really looking forward to tutoring you in Spanish, Chemistry, Biology or Maths as well as trying to help you during the difficult proce...”

£20 /hr

Katie D.

Degree: Biomedical Science (Bachelors) - Durham University

Subjects offered:Biology

Biology

“Hello, I am just a genuine, patient, friendly person who wants to help other struggling students to understand, enjoy and hopefully succeed in biology.”

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

What is the difference between interspecific competition and intraspecific competition?

What are the features of alveolar epithelium which allow efficient gas exchange?

Describe the process of transcription

Explain what is meant by codominant alleles.

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