Skip to content
MathsGenie logo
Open app

Course home

  1. A Level
  3. Chemistry AQA
  5. Question bank

Amino acids, proteins and DNA (A-level only)

EasyMedium
12345678
Question 1

A double-stranded DNA fragment contains 120 base pairs. Analysis of the fragment shows that 35% of the total nitrogenous bases are adenine.

What is the total number of hydrogen bonds holding the two complementary strands of this DNA fragment together?

138138138

276276276

318318318

324324324

Amino acids, proteins and DNA (A-level only) Questions

  1. A Level
  2. /Chemistry
  3. /Amino acids, proteins and DNA (A-level only)