Biology

>

A-Level

Biological Molecules

Question

What does complementary base pairing mean?

3 years ago

ยท

1 Reply

ยท

1898 views

A

Audrey O'Conner


Get A Free Cheatsheet For Biological Molecules ๐Ÿ”ฅ

Use our concise notes and diagrams to only revise what you need to know.

By submitting your email, you agree to join our mailing list. You can unsubscribe at any time.

1 Answer

H
Hasan Shahzad

A DNA molecule has 2 strands. Complementary base pairing is when a base on one strand 'matches/is complementary to/ fits with' the base on the opposite strand.

An easy way of remembering which bases are complementary is the word 'taxi' but instead 'TAGC'

T and A are complementary and have 2 hydrogen bonds between them

G and C are complementary and have 3 hydrogen bonds between them.


Hope this helps!


Found this useful? Give kudos!

Think you can help?

More Biology A-Level Questions
Sherpa Badge

Need an A-Level Biology tutor?

Get started with a free online introductions with an experienced and qualified online tutor on Sherpa.

Find an A-Level Biology Tutor