Lucas's unwashed, dirty hand produces 947 CFU when swabbed onto a nutrient agar plate, while his alcohol-sanitized and air-dried hand produces 23 CFU on a swabbed agar plate. Calculate the change in CFU growth between Lucas's two skin-washing treatments, and convert it to percentage CHANGE (delta). What is the PERCENTAGE CHANGE (NOT % reduction!) in CFU ("%delta-CFU" or "%ACFU" = start with [CFUwashed - CFUunwashed)? (Bonus question for your notes: Is this an effective handwashing method?) O 76.9% O -76.9% O 97.6% O -97.6% O 92.4% O -92.4%

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
icon
Related questions
Question

  

Lucas's unwashed, dirty hand produces 947 CFU when swabbed onto a nutrient agar plate, while his alcohol-sanitized and air-dried hand produces 23 CFU on
a swabbed agar plate. Calculate the change in CFU growth between Lucas's two skin-washing treatments, and convert it to percentage CHANGE (delta). What
is the PERCENTAGE CHANGE (NOT % reduction!) in CFU ("%delta-CFU" or "%ACFU" = start with [CFUwashed - CFUunwashed])?
(Bonus question for your notes: Is this an effective handwashing method?)
O 76.9%
O -76.9%
O 97.6%
-97.6%
92.4%
-92.4%
Transcribed Image Text:Lucas's unwashed, dirty hand produces 947 CFU when swabbed onto a nutrient agar plate, while his alcohol-sanitized and air-dried hand produces 23 CFU on a swabbed agar plate. Calculate the change in CFU growth between Lucas's two skin-washing treatments, and convert it to percentage CHANGE (delta). What is the PERCENTAGE CHANGE (NOT % reduction!) in CFU ("%delta-CFU" or "%ACFU" = start with [CFUwashed - CFUunwashed])? (Bonus question for your notes: Is this an effective handwashing method?) O 76.9% O -76.9% O 97.6% -97.6% 92.4% -92.4%
Expert Solution
steps

Step by step

Solved in 2 steps

Blurred answer
Knowledge Booster
Biochemical activities
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:
9780134580999
Author:
Elaine N. Marieb, Katja N. Hoehn
Publisher:
PEARSON
Biology 2e
Biology 2e
Biology
ISBN:
9781947172517
Author:
Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:
OpenStax
Anatomy & Physiology
Anatomy & Physiology
Biology
ISBN:
9781259398629
Author:
McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:
Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)
Molecular Biology of the Cell (Sixth Edition)
Biology
ISBN:
9780815344322
Author:
Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter
Publisher:
W. W. Norton & Company
Laboratory Manual For Human Anatomy & Physiology
Laboratory Manual For Human Anatomy & Physiology
Biology
ISBN:
9781260159363
Author:
Martin, Terry R., Prentice-craver, Cynthia
Publisher:
McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)
Inquiry Into Life (16th Edition)
Biology
ISBN:
9781260231700
Author:
Sylvia S. Mader, Michael Windelspecht
Publisher:
McGraw Hill Education