A-Level BiologyYear 2017Q1
Page 02 SECTION 1 — 20 marks Attempt ALL questions 1. Which of the following diagrams shows the correct structure of DNA? 5' 3' 3' 5' 3' 5' 5' 3' 5' 3' 3' 5' 3' 5' 5' 3' C D A B 2. A section of double stranded DNA was found to have 60 guanine bases and 30 adenine bases. What is the total number of deoxyribose sugars in this section? A 30 B 90 C 180 D 270
Paper Source:NH_Biology_all_2017.pdf
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Exam Specification Info
This question is part of the UK A-Level Biology syllabus. In the actual exam, structured questions typically require linking specific keywords to gain full marks. Applaa helps you drill these topics.
Syllabus levelAdvanced Level (A-Level)
SubjectBiology
Official MarksVariable (2–6 marks)