<meta http-equiv="refresh" content="1; url=/nojavascript/"> Electronic Component ( Real World ) | Physical Science | CK-12 Foundation
Dismiss
Skip Navigation
You are viewing an older version of this Concept. Go to the latest version.

Electronic Component

%
Progress
Practice
Progress
%
Practice Now
DNA Switch
 0  0  0

DNA Switch

Credit: Caroline Davis2010
Source: http://www.flickr.com/photos/53416677@N08/4972850923/
License: CC BY-NC 3.0

Do you recognize this model? It represents a DNA molecule. DNA is the molecule that carries genetic information in virtually all living cells. It can also act as a switch.

The Back Story

  • Scientists have figured out a way to turn DNA inside cells into a biological transistor. A transistor is an electronic device that acts like a switch, turning electricity on or off.
  • Credit: Windell Oskay
    Source: http://www.flickr.com/photos/oskay/275142789/
    License: CC BY-NC 3.0

    Biological transistors can be much smaller than regular transistors [Figure2]

     

  • A biological transistor also acts like a switch. But it turns something other than electricity on or off. Watch this short video to learn more about it: 

https://www.youtube.com/watch?v=xgueLQCNQxg

Explore More

Read about the DNA switch at the link below. Then answer the questions that follow.

  1. Electronic transistors regulate the flow of electrons along metal wires. In a computer, this determines how calculations are processed. What does a DNA transistor regulate?
  2. What is a possible real-world application of DNA switches?
  3. The scientists are also trying to create the biological equivalent of the Internet. What would this require?

Image Attributions

  1. [1]^ Credit: Caroline Davis2010; Source: http://www.flickr.com/photos/53416677@N08/4972850923/; License: CC BY-NC 3.0
  2. [2]^ Credit: Windell Oskay; Source: http://www.flickr.com/photos/oskay/275142789/; License: CC BY-NC 3.0

Explore More

Sign in to explore more, including practice questions and solutions for Nucleic Acid Classification.

Reviews

Email Verified
Well done! You've successfully verified the email address .
OK
Please wait...
Please wait...

Original text