BIO 197 M5_L1_Gizmo_Lab_Building_DNA_-_HONORS 2020

M5 L1: Gizmo Lab Building DNA - Honors Revised by NVLA: 06/10/2017 BIO 197 M5_L1_Gizmo_Lab_Building_DNA_-_HONORS 2020 – University Of Nevada Name: Thao Ho Date: 6/29 Prior Knowledge Questions (Do these BEFORE using the Gizmo.) DNA is an incredible molecule that forms the basis of life on Earth. DNA molecules contain instructions for building every living organism on Earth, from the tiniest bacterium to a massive blue whale. DNA also has the ability to replicate, or make copies of itself. This allows living things to grow and reproduce. Look at the DNA molecule shown at right. What does it look like? To me the DNA looks like a coiled ladder. The sides of the ladder cross and continue so it isn’t straight. Based on this picture, how do you think a DNA molecule makes a copy of itself? (Hint: Look at the bottom two “rungs” of the ladder.) I think the dna copies itself by making opposite components that can fit perfectly with the original components. M5 L1: Gizmo Lab Building DNA - Honors Revised by NVLA: 06/10/2017 Gizmo Warm-up The Building DNA Gizmo™ allows you to construct a DNA molecule and go through the process of DNA replication. Examine the components that make up a DNA molecule. What are the two DNA components shown in the Gizmo? The two components are nucleotides and phosphates. A nucleoside has two parts: a pentagonal sugar (deoxyribose) and a nitrogenous base (in color). When a nucleoside is joined to a phosphate, it is called a nucleotide. How many different nitrogenous bases do you see? 4 Note: The names of these nitrogenous bases are adenine (red), cytosine (yellow), guanine (blue), and thymine (green). M5 L1: Gizmo Lab Building DNA - Honors Revised by NVLA: 06/10/2017 Activity A: Build a DNA molecule Get the Gizmo ready: · If necessary, click Reset to start the building process. Question: What is the structure of DNA? Build: Follow the steps given in the Gizmo to construct a molecule of DNA. (Note: For simplicity, this DNA molecule is shown in two dimensions, without the twist.) Stop when the hint reads: “The DNA molecule is complete.” In the table below, list the sequence of nitrogenous bases on the left-hand side of the DNA molecule and the right-hand side. Left side Right side C G C G G C G C A T T A