The Polymerase Chain Reaction (PCR) Is Used to Replicate Segments

question 7

Multiple Choice

The Polymerase Chain Reaction (PCR) is used to replicate segments of DNA. It is used to make DNA samples big enough for testing, starting from very small samples collected, for instance, from a crime scene. PCR can double the number of a particular DNA segment every two minutes. If one wants a DNA sample with copies of a particular segment, how long must the PCR process be carried out to produce them? Assume that there is just one segment in the original sample.

• A) 133 minutes
• B) 66 minutes
• C) 23 minutes
• D) minutes

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Definitions:

Circadian Rhythms

Biological processes that display an endogenous, entrainable oscillation of about 24 hours, influencing various physiological functions.

Hormone

A chemical substance produced in the body that controls and regulates the activity of certain cells or organs.

Psychedelics

Substances that produce changes in perception, mood, and cognitive processes through their action on the brain's chemistry.

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Nerve cells that transmit information through electrical and chemical signals in the body.