Jump to content

  • Log in with Facebook Log in with Twitter Log in with Windows Live Log In with Google      Sign In   
  • Create Account

Submit your paper to J Biol Methods today!
Photo
- - - - -

Positive control = starch, what is the negative control?


  • Please log in to reply
1 reply to this topic

#1 BrandonG1394

BrandonG1394

    member

  • Members
  • Pip
  • 1 posts
0
Neutral

Posted 31 October 2014 - 12:00 PM

Teacher want's us to choose a negative control for this and I have no Idea.

 

  1. Set up a positive control for this experiment by spraying a paper towel with the starch solution. Allow the starch to dry for approximately one hour (this time interval may vary by local humidity).
  2. In the mean time, set up a negative control for this experiment. Use your knowledge of the scientific method and experimental controls to establish this component (hint: what should happen when IKI solution contacts something that does not contain starch?) Identify your negative control in Table 1.
    Note: Be sure to space the positive and negative controls apart from each other to prevent cross-contamination.

the full experiment can be found here:

EXPERIMENT 1

http://www.scribd.co...4-Answer-Sheet1



#2 GNANA

GNANA

    GNANA

  • Global Moderators
  • PipPipPipPipPipPipPipPipPipPip
  • 220 posts
11
Good

Posted 31 October 2014 - 01:09 PM

so your negative control should be something that doesnt have starch, right? first find, what is starch? then you can easily find the negative ctrl.

 

 think very basically what all does/doesnt have starch, start from water, does it?  meat does it? or vegetables ? plastic ? ask yourself you can find it.


I always had an alternate hypothesis....





Home - About - Terms of Service - Privacy - Contact Us

©1999-2013 Protocol Online, All rights reserved.