Challenge Worksheet
TN-BIO-IGCSE-19547 · v2.3
DNA Structure
IGCSE · Biology · Genetics · National Curriculum (UK)
Grade
IGCSE
Subject
Biology
Topic
Genetics
Subtopic
DNA Structure
Curriculum
National Curriculum (UK)
Difficulty
Higher
Time
35 minutes
Total marks
44
Student name
Teacher name
Date
Learning objectives
- Recognise dna structure accurately in biology contexts.
- Explain the underlying rule of dna structure in the student's own words.
- Apply dna structure to multi-step and unfamiliar problems.
- Justify a chosen method and identify errors in another student's work.
Skills assessed
- Fluency and recall
- Method and setting out
- Reasoning and justification
- Problem solving in context
- Self-assessment
Instructions
- Write your name, your teacher's name and the date in the header.
- Answer every question in the space provided. Continue on the back if needed.
- Show all working — method marks are awarded even when the final answer is wrong.
- Aim to finish in about 35 minutes.
- Complete the reflection box at the end before you hand the sheet in.
Warm-up
Bloom: Remember · 3 marks
Answer quickly. These check you are ready for the topic.
1.Name one fact you already know about dna structure.
[1]2.Circle one fact you already know about dna structure.
[1]3.Write down one fact you already know about dna structure.
[1]
Recall
Bloom: Remember · 3 marks
Complete from memory. No calculator, no notes.
1.List the key term used in dna structure described here: item 1.
[1]2.Define the key term used in dna structure described here: item 2.
[1]3.Define the key term used in dna structure described here: item 3.
[1]