DNA Review How would you describe the shape of a DNA molecule? - Spiral helix / twisted ladder.

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Presentation transcript:

DNA Review How would you describe the shape of a DNA molecule? - Spiral helix / twisted ladder

Why couldn’t we see this shape during our Strawberry DNA Extraction Lab? - Atomic structure of DNA is too small to see

What is this building block of DNA called? - Nucleotide

Label the parts: nucleotide, sugar, phosphate, nitrogenous base

What base does Adenine pair up with? - Thymine What base does Cytosine pair up with? - Guanine

What are chromosomes? - tightly coiled DNA molecule

How many chromosomes does the human species have in their cells? - 23 pairs (46)