
8.3 Quizizz: DNA Replication
Authored by Randi McMillen
Biology
9th - 12th Grade
NGSS covered
Used 199+ times

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About
This quiz focuses specifically on DNA replication, a fundamental molecular biology process that forms the cornerstone of cellular reproduction and genetics. Designed for high school biology students in grades 9-12, the assessment evaluates students' understanding of the semiconservative nature of DNA replication, the sequential steps of the replication process, and the critical role of DNA polymerase as both a synthesizing and proofreading enzyme. Students must demonstrate knowledge of molecular mechanisms including the unwinding of the double helix, complementary base pairing with free nucleotides, and error-correction processes. The questions require students to distinguish between different enzymes' functions, sequence the order of replication events, and understand the conceptual meaning of semiconservative replication where each new DNA molecule contains one original and one newly synthesized strand. Created by Randi McMillen, a Biology teacher in the US who teaches grades 9-12. This quiz serves as an effective formative assessment tool to gauge student comprehension after introducing DNA replication concepts through direct instruction or laboratory activities. Teachers can deploy this assessment as a quick warmup to activate prior knowledge before diving deeper into related topics like mitosis or protein synthesis, or as a review activity before unit exams. The quiz works particularly well as homework to reinforce classroom learning or as an exit ticket to check for understanding at the lesson's conclusion. The content directly supports NGSS standards HS-LS1-4, which requires students to use mathematical representations to support claims about the inheritance of DNA and traits, and HS-LS3-1, which asks students to develop models to describe the role of DNA in the production of proteins that affect traits.
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5 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
The process that makes an exact copy of a cell’s DNA is called
conservation.
preservation.
replication.
synthesis.
Tags
NGSS.HS-LS3-2
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What are the main functions of DNA polymerase?
breaks hydrogen bonds and exposes bases
holds DNA strands apart and attracts bases
zips and unzips the double-stranded DNA
binds nucleotides and corrects base pair errors
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Which of the following events occurs directly after a DNA molecule is unzipped?
Mismatched nucleotide bases are identified and replaced.
Free-floating nucleotides pair up with exposed bases.
Identical double-stranded DNA molecules are formed.
Enzymes break hydrogen bonds between base pairs.
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
The process of making new DNA molecules is semiconservative. This means that every new DNA molecule is composed of
two completely identical strands of DNA.
one original and one new strand of DNA.
one strand of DNA and one strand of RNA.
two strands that mix original and new DNA.
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
When new DNA molecules are formed, almost all errors are detected and fixed by
the correct nucleotide.
the sugar-phosphate backbone.
DNA polymerase.
one DNA strand.
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