Building dna



Download 348.63 Kb.
Page2/3
Date25.01.2021
Size348.63 Kb.
#55684
1   2   3
DNA GIZMO
DNA GIZMO, DNA GIZMO
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?




  1. 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.) You are building left side 1st.

Stop when the hint reads: “The DNA molecule is complete.” In the spaces at right, list the sequence of nitrogenous bases on the left-hand side of the DNA molecule and the right-hand side.


Left side Right side


_____g________ _______c______

a

_____________ ______t_______


___c__________ ______g_______
_____t________ _______a______
_____g________ _______c______
___a__________ ______t_______
____c_________ _____g________
___t__________ _________a____




  1. Explain: Describe the structure of the DNA molecule you made.




      1. What makes up the sides of the DNA molecule? ____________________phosphates________




      1. What makes up the “rungs” of the DNA molecule? ________nucleosides___________________



  1. Fill in: Write the name of the nitrogenous base that joins to each of the bases below:

Adenine, thymine thymine adenie

Adenine (A) joins to ___________thymine____ Thymine (T) joins to ____adenine___________


Cytosine (C) joins to ____guanine___________ Guanine (G) joins to _______cytosine ________



  1. P ractice: The left side of a DNA molecule is shown. Draw a complementary right side of the molecule.




Download 348.63 Kb.

Share with your friends:
1   2   3




The database is protected by copyright ©ininet.org 2024
send message

    Main page