DNA Structure

Structure of DNA: Use information in this video to answer the questions on the rest of this worksheet. Heredity means Genes genetic information that is passed down from the previous generation DNA What type of biomolecule is DNA? Protein Nucleic Acid Carbohydrate Lipid How many unique nitrogen bases are there in DNA? 1 2 3 4 Fill in the blanks using the click word bank. DNA contains the information that determines inherited characteristics. It has the code for making proteins. DNA structure is also called the double helix. The outside of the DNA molecule is made of of alternating sugarand phosphate. The inner "rungs" of the molecule are the nitrogen bases. In eukaryotic cells, DNA is found in the _. Lysosome Ribosome Rough ER Nucleus Label the parts of the nucleotide below -- SPELLING COUNTS! Click on the blue bubbles to fill in these missing labels: phosphate group, nitrogen base, deoxyribose sugar Phosphate Group deoxyribose sugar Nitrogen Base Match the bases: The nitrogen bases of DNA ALWAYS pair up the same way. Match the correct bases together. Adenine (A) Thymine (T) Guanine (G) Cytosine (C) Match the given DNA strand given to it's other side TGACTA ACTGAT TTAAGG AATTCC AGCTTCGA TCGAAGCT CATCGGAT GTAGCCTA Match the DNA replication step to the order which it occurs. Step 1 DNA unwinds (unzips) & makes two separate strands Step 2 New bases are added to each strand following the base pairing rules. Step 3 Replication occurs on BOTH strands until it is copied completely. Step 4 The unzipped sections close back up to form a complete DNA copy