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Molecular Biology II: Techniques and Biotechnology

PCR, gel electrophoresis, cloning, CRISPR, sequencing, blotting, recombinant DNA and model organism tools.

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39 basic cards for College Biology. Set 2 of 2 in Molecular Biology. It opens with "What does PCR stand for?" and "What are the three main steps of each PCR cycle, in order?". Study it alongside the other College sets below.

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What does PCR stand for?
Show answerPolymerase Chain Reaction
What are the three main steps of each PCR cycle, in order?
Show answerDenaturation, annealing, extension
What is the typical denaturation temperature in PCR?
Show answer94-95 degrees Celsius
What is the typical annealing temperature in PCR?
Show answer50-65 degrees Celsius
What is the typical extension temperature in PCR?
Show answer72 degrees Celsius
What DNA polymerase is typically used in PCR?
Show answerTaq polymerase
What is the function of primers in PCR?
Show answerTo bind to the template DNA and provide a starting point for DNA synthesis
Approximately how many copies of DNA result from 30 cycles of PCR?
Show answerAbout 1 billion copies (2 to the 30th power)
What is gel electrophoresis?
Show answerA laboratory technique that separates DNA or proteins based on size and charge using an electric field
Why does DNA migrate through a gel when an electric field is applied?
Show answerDNA has a negatively charged phosphate backbone, so it moves toward the positive electrode
In gel electrophoresis, what determines how far DNA fragments travel?
Show answerTheir size; smaller fragments move farther than larger fragments
What is agarose used for in gel electrophoresis?
Show answerAs the gel matrix to provide pores through which DNA fragments migrate
How does ethidium bromide allow visualization of DNA?
Show answerIt intercalates between DNA base pairs and fluoresces when exposed to UV light
What is molecular cloning?
Show answerThe process of creating copies of a specific DNA sequence and inserting it into a vector or host cell
What is a restriction enzyme?
Show answerA protein that cuts DNA at specific recognition sequences

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