1. Use the shapes to the right to draw a molecule of DNA that has the following sequence: C A T “Science is an imaginative adventure of the mind seeking truth in a world of mystery.” ~ Sir Hinshelwood, English chemist GC TA

2. Use the shapes to the right to draw a molecule of DNA that has the following sequence: C A T “Science is an imaginative adventure of the mind seeking truth in a world of mystery.” ~ Sir Hinshelwood, English chemist GC TA AT

3. What is a nucleotide? What is it made up of? Draw a box around one. “Science is an imaginative adventure of the mind seeking truth in a world of mystery.” ~ Sir Hinshelwood, English chemist GC TA AT Building block of DNA Sugar, phosphate, nitrogen base

4. Label the purines and pyrimidines What is the difference between a purine and pyrimidine? “Science is an imaginative adventure of the mind seeking truth in a world of mystery.” ~ Sir Hinshelwood, English chemist GC TA AT Purines – Double ring of carbon and nitrogen Adenine + Guanine Pyrimidines – single ring of carbon and nitrogen Cytosine + Thymine Pyrimidines

5. Label the purines and pyrimidines What is the difference between a purine and pyrimidine? “Science is an imaginative adventure of the mind seeking truth in a world of mystery.” ~ Sir Hinshelwood, English chemist GC TA AT Purines Purines – Double ring of carbon and nitrogen Adenine + Guanine Pyrimidines – single ring of carbon and nitrogen Cytosine + Thymine

6. Label the purines and pyrimidines What is the difference between a purine and pyrimidine? “Science is an imaginative adventure of the mind seeking truth in a world of mystery.” ~ Sir Hinshelwood, English chemist Purines – Double ring of carbon and nitrogen Adenine + Guanine Pyrimidines – single ring of carbon and nitrogen Cytosine + Thymine