CSCOPE Unit 06 Lesson 01
Double-stranded nucleic acid
(double helix shape —like a twisted ladder)
Contains genetic information for cell functions, growth, and division.
Basic building block of nucleic acids
Sugar component in the backbone of DNA
Binds with sugar in DNA backbone
Phosphorous attached to four oxygen atoms
Nitrogen Base Pairs
Nitrogen base pairs form the “rungs” of the DNA structure.
Purine base that pairs with thymine
Pyrimidine base that pairs with adenine
Pyrimidine base that pairs with guanine
Purine base that pairs with cytosine
DNA Puzzle Pieces
What do you notice about the structure overall?
What does it look like?
How do the two sides of the “ladder” compare?
What are the rungs of the “ladder” made of?
Which nucleic acid pairs with which?
In what ways do you think the real DNA in each person’s cells is the same as the model?
In what ways do you think it is different than the model?