DNA Structure and Function
Authored by Cortney Johnson
Science
9th - 12th Grade
NGSS covered
Used 1K+ times
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About
This quiz comprehensively covers DNA structure and function, focusing on the fundamental molecular biology concepts essential for high school biology students at the 9th-12th grade level. Students must demonstrate mastery of DNA's double helix structure, understanding that nucleotides serve as the basic building blocks (monomers) of DNA, and recognizing the specific components including deoxyribose sugar, phosphate groups, and the four nitrogenous bases (adenine, thymine, guanine, and cytosine). The questions require students to apply Chargaff's rules for complementary base pairing, calculate base percentages using these pairing relationships, understand the antiparallel nature of DNA strands, and recognize that DNA serves as the genetic blueprint coding for proteins. Students need strong foundational knowledge of cell organelles, distinguishing between prokaryotic and eukaryotic DNA location, and understanding the molecular bonds that hold DNA structure together, including hydrogen bonds between bases and the sugar-phosphate backbone formation. Created by Cortney Johnson, a Science teacher in the US who teaches grades 9-12. This quiz serves as an excellent formative assessment tool for evaluating student understanding before moving into more complex topics like DNA replication, transcription, or genetic engineering. Teachers can effectively use this as a warm-up activity to activate prior knowledge, assign it as homework to reinforce classroom instruction, or implement it as a review session before unit exams. The variety of question formats, from basic recall to application problems involving base-pairing calculations, makes it particularly valuable for differentiated instruction and identifying specific areas where students need additional support. This assessment aligns with NGSS standards HS-LS1-1 (constructing explanations for how DNA determines organism structure and function) and supports Common Core mathematical practices through percentage calculations and logical reasoning about molecular relationships.
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27 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following best describes a DNA molecule?
Tags
NGSS.HS-LS1-1
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Which of the following units are repeatedly joined together to form a strand of DNA? (This is the MONOMER of DNA.)
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Adenine bonds with ______________.
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Guanine bonds with ______________.
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Why is DNA important?
Tags
NGSS.HS-LS1-1
NGSS.HS-LS3-1
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Name this structure
Tags
NGSS.HS-LS1-1
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What are the 4 nitrogen bases?
Tags
NGSS.MS-LS3-1
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