DNA Structure 5th Hour

Master DNA structure! Label diagrams, understand nucleotides, and practice base pairing with this engaging worksheet.

What are the building blocks of DNA? nucleotide nucleic acid nitrogen base phosphate Complete the blanks. DNA Structure:Using Franklin and Chargraff's data, Watson and Crick measured the width of the helix and the spacing of the bases and built the first model of DNA.The shape of DNA is known as a double helix.The shape looks like a twisted ladder.The phosphate and deoxyribose sugar form the backbone or sides of the DNA ladder, while the nitrogenous bases form the steps or rungs of the DNA ladder. Answer the questions below using this image. The image above represents a nucleotide. It includes the following three parts:A= phosphateB= pentose sugarC= nitrogenous baseWhen DNA pairs up, adenine always pairs with thymine and cytosine always pairs with guanine. DNA Molecule Labeling Hydrogen bond Phosphate group Deoxyribose Nucleotide Nitrogenous base Base pair DNA Complementary Bases Labeling Complete the strand of DNA using the image above. Just type the capital letter for each one! 1. G2. A3. C4. A5. G6. T7. C8. A9. G10. T Chargaff's Rule Complete the boxes with the correct information. Remember the base pair rule: A=T, C=G! Bases Percentage Adenine 15 Cytosine 35 Thymine 15 Guanine 35 Total 100 Complete the boxes with the correct information Bases Percentage Adenine 7.5 Cytosine 42.5 Thymine 7.5 Guanine 42.5 Total 100