1. KEY CONCEPT ___ _________ is the same in all _________.

2. ____ is composed of ____ types of __________.
___ is made up of a ___ ____ of ____________.
Each __________ has ____ _____.
a _________ group
a ____________ _____
a _________-__________ ____
phosphate group
deoxyribose (sugar)
nitrogen-containing
base

3. The ________ containing ____ are the ____ _________ in the ____ ___________.

4. ______ and _____ determined the ______-___________ _________ of ___ by building ______.
They realized that ___ is a ______ _____ that is made up of a _____-__________ ________ on the ______ with _____ on the ______.

5. _______ and ______ discovery built on the work of ________ ________ and _____ ________.
Franklin’s __-___ _____ suggested that ___ was a _______ _____ of ____ ____
_________ ____ stated that __=__ and __=__.

6. ____________ always _____ in the ____ ___.
The ____-_______ ____ show how ____________ always pair up in ___.
__ pairs with __
__ pairs with __
Because a __________ (______ ____) pairs with a ______ (______ ____), the _____ has a uniform ____. C G T A

7. The ________ is connected by ________ _____.
The ____ are connected by ________ _____.
hydrogen bond
covalent bond