MYTUTOR SUBJECT ANSWERS

441 views

Describe the basic structure of a DNA and complementary base pairing.

DNA is a large polymer consisting of two DNA strands that form a double helix.  Each strand is made up of bases.  In DNA, there are four different bases:

Adenine, Thymine, Cytosine & Guanine

Pairs of bases form chemical cross-links between the two strands of DNA to form the final double helix.  The base pairs always form a particular way:

- Adenine always pairs with Thymine (A --- T)

- Cytosine always pairs with Guanine (C --- G)

This process is called complementary base pairing.

Lorna P. GCSE Biology tutor, A Level Biology tutor, GCSE Chemistry tu...

11 months ago

Answered by Lorna, a GCSE Biology tutor with MyTutor


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

321 SUBJECT SPECIALISTS

£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.”

£24 /hr

Karolina K.

Degree: Dentistry (Bachelors) - Kings, London University

Subjects offered:Biology, Science+ 5 more

Biology
Science
Psychology
Maths
Chemistry
-Personal Statements-
-Medical School Preparation-

“Hi, my name is Karolina and I am a Dentistry Student from King's College London.  I understand that many students find certain aspects of the A-level syllabus challenging and having recently completed mine I believe that I know how to...”

£22 /hr

Xanthe W.

Degree: Biological Sciences with a Year in Industry/Research (Bachelors) - Imperial College London University

Subjects offered:Biology, Maths+ 1 more

Biology
Maths
Chemistry

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

About the author

Lorna P.

Currently unavailable: for new students

Degree: Veterinary Science (Bachelors) - Bristol University

Subjects offered:Biology, Maths+ 1 more

Biology
Maths
Chemistry

“Hello!  A bit about me.. I'm currently studying Veterinary Science at the University of Bristol, having previously completed a degree in Zoology at the University of Leeds. I'm a patient person and think teaching others is a very rew...”

You may also like...

Other GCSE Biology questions

How does HIV invade cells?

What is active transport the movement of and what does it need to occur? Give some examples of where is might occur in the human body.

Explain the difference between competitive and noncompetitive enzyme inhibitors.

What is osmosis?

View GCSE 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