Molecular Technology Review

What is the purpose of the end-point analysis in the diagram?

• To separate DNA strands

• To visualize the amplified DNA

• To synthesize new DNA strands

• To denature the DNA

How does gel electrophoresis use DNA's properties to move fragments through the gel?

• By using DNA's positive charge

• By using DNA's negative charge

• By using DNA's neutral charge

• By using DNA's magnetic properties

What can gel electrophoresis help show about DNA fragments?

• Differences in color

• Differences in size

• Differences in temperature

• Differences in weight

What is one use of gel electrophoresis mentioned in class?

• Cooking food

• Solving crimes

• Painting

• Building structures

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What are Genetically Modified Organisms (GMOs)?

• Organisms whose DNA has been changed through genetic engineering

• Organisms that are naturally occurring without any modifications

• Organisms that are only found in laboratories

• Organisms that cannot be used for protein production

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Which organisms are often the best for manufacturing a protein product?

• Plants

• Bacteria

• Animals

• Fungi

Which of the following is an example of a genetically modified organism?

• Fluorescent mice

• Regular tomato

• Organic strawberry

• Wild fish

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What safety measures do scientists use regarding GMOs?

• To increase production

• To guard against new pathogens

• To enhance flavor

• To reduce costs

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What is one concern related to GM organisms?

• Increased vitamin content

• Introduction of allergens into the food supply

• Faster growth rates

• Enhanced color

Which step in PCR involves raising the temperature to activate DNA polymerase to add nucleotides to a growing strand of DNA?

• Denaturation

• Annealing

• Extension

• Gel electrophoresis