DNA Structure and Replication Overview Test
Explore a comprehensive review test on DNA structure and replication, covering key concepts such as DNA abbreviation, sugar in DNA, bonding in the double helix, nitrogenous bases, base pairing, scientists' contributions, and the double helix model. Test your knowledge with multiple choice, matching, and short answer questions presented alongside informative images.
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Presentation Transcript
DNA Structure and Replication Review! Test - Multiple Choice, Matching, Short Answer
What does DNA stand for? BE COMFY WITH THE CORRECT SPELLING!!
What is the sugar named in DNA?
In the DNA Double Helix, the sugar is bonded to what molecule?
Follow up question what is the bond that holds the sugar and phosphate together?!?
Phosphate and sugar are bonded together. What is then bonded to the sugar molecule?
Name the 4 nitrogenous bases.
The nitrogenous bases are bonded together by what type of bond? This holds the 2 strands together.
Tell me the difference. Purine Pyrimidine
Tell me the difference. Purine Pyrimidine Adenine Guanine 2 Ring Structure Thymine Cytosine 1 Ring Structure
What nitrogenous bases pair together?
This scientist used X-ray diffraction to find information about DNA. Found that DNA is in the shape of a helix or a coiled spring.
DNA is in the shape of a double helix (twisted ladder). These Scientists realized that the double helix accounted for Franklin s X-ray pattern, and it explained Chargaff s rule of base pairing and how the 2 strands of DNA are held together. This 3D model can even tell us how DNA can function as a carrier of genetic information
Fill in the chart! Adenine Thymine Guanine Cytosine % of Each Base Pair 38%
Fill in the chart! Adenine Thymine Guanine Cytosine % of Each Base Pair 12% 12% 38% 38% Automatically you should know that Cytosine will be the same as Guanine. 38+38 = 76% 100-76= 24 Adenine and Thymine = 24 Total 24/2 = 12% each
Tell me the general steps of DNA Replication
DNA Unwinds and Unzips Helix unwinds and 2 DNA strands separate at the Hydrogen bonds between nitrogen bases 1 DNA Polyermase helps to link free floating DNA nucleotides with complimentary nucleotides on each of the two strands 2 Covalent bonds join nucleotides above and below each other on the new strands. Hydrogen bonds join complimentary base pairs 3 Each new DNA MOLECULE formed contains One parent strand and a new strand 4
What ENZYME is present in the first step of DNA replication
What ENZYME is present to bring free nucleotides to the form the new strand of DNA .
What are the two strands referred to as in the process of Replication?
What happens when an error is made in the replication process?
Where is DNA found in a PROKARYOTIC cell? CYTOPLASM o Remember they do not have organelles do not have a nucleus!!!
DONE! Study o Note Packet o Scientist WS/Movie o Genome WS o HW Worksheets o All PowerPoint s o Email if you have any questions
