AP Biology biotechnology PCR and gel key terms
Key terms and concepts related to PCR and gel electrophoresis for AP Biology.
Quiz(16 preguntas)
1. What is the first step of PCR?
Términos en este set(20)
What is PCR?
Polymerase Chain Reaction; a technique to amplify DNA.
Components of PCR?
DNA template, primers, DNA polymerase, and nucleotides.
True or false: Gel electrophoresis separates proteins.
False, because it primarily separates DNA or RNA fragments.
Difference between DNA and RNA polymerase?
DNA polymerase synthesizes DNA; RNA polymerase synthesizes RNA.
Fill in the blank: The ___ step in PCR is denaturation.
Denaturation is the step where DNA strands separate.
What is the role of primers in PCR?
Primers bind to DNA and provide a starting point for synthesis.
What does gel electrophoresis do?
Separates DNA fragments based on size using an electric field.
True or false: Taq polymerase is heat-stable.
True, because it withstands the high temperatures of PCR.
What is the purpose of the buffer in PCR?
Maintains optimal pH and ionic environment for the reaction.
What is a DNA ladder?
A mixture of known DNA sizes used as a reference in gel electrophoresis.
Which phase of PCR involves annealing?
The phase where primers bind to the template DNA.
Difference between agarose and polyacrylamide gels?
Agarose is used for DNA; polyacrylamide is used for proteins and small DNA.
Fill in the blank: PCR is used for ___ analysis.
DNA analysis, including cloning and sequencing.
What is the significance of PCR?
Allows for amplification of small DNA samples for research and diagnostics.
True or false: PCR can amplify RNA directly.
False, because RNA must be converted to cDNA first.
What does electrophoresis measure?
The size of DNA fragments based on their movement through a gel.
Purpose of heat cycling in PCR?
Facilitates denaturation, annealing, and extension of DNA strands.
What are dNTPs?
Deoxynucleotide triphosphates; building blocks of DNA used in PCR.
Which process follows gel electrophoresis?
Visualization of DNA bands using staining methods.
What is the function of ethidium bromide?
A dye that intercalates with DNA, allowing visualization under UV light.
Preguntas en este set(16)
1. What is the first step of PCR?
2. Which enzyme is crucial for PCR?
3. What type of gel is commonly used for DNA electrophoresis?
4. Which of the following is NOT a component of PCR?
5. During which phase do primers bind to target DNA?
6. What is the purpose of using a DNA ladder in electrophoresis?
7. Which of these processes is used to visualize DNA in gel electrophoresis?
8. Fill in the blank: The optimal temperature for Taq polymerase activity is around ___ degrees Celsius.
9. What is the role of ethidium bromide in gel electrophoresis?
10. True or false: PCR can be used for cloning.
11. Which of the following steps occurs last in PCR?
12. What does the term 'amplification' refer to in PCR?
13. Difference between qualitative and quantitative PCR?
14. What is the main purpose of PCR?
15. Fill in the blank: PCR involves repeated cycles of denaturation, annealing, and ___.
16. What can be the result of insufficient primer concentration in PCR?
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