As part of good experimental design, what are some other potential variables that we held constant among all four initial tubes? List at least four.
As part of good experimental design, what are some other potential variables that we held constant among all four initial tubes? List at least four.
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,...
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As part of good experimental design, what are some other potential variables that we held constant among all four initial tubes? List at least four.
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Transcribed Image Text:I We wi now Use tubes 1A-4A O teel each solutton for the presence of
gr We wi be using Benedic's test for the presence of sugar. For this
hest, you munt add the solution and then heat the mixture for several
wnutes
. Add 2.5 ml of Benedict's reagent to each test tube 1A-4A.
b. Place each test tube in the hot block and allow them to heat for
15-20 minutes. Be careful around the hot block.
C. Remove the tubes carefully using the test tube clamps provided.
d. Determine the amount of sugar present in each tube using the
following scale:
blue
- (negative result; no sugar present)
green
yellow
++
orange
+++
red
++++ (most sugar)
e. Record your results in the table.
4. You may now dispose of the solutions in the sink. Wash all your test tubes
and wipe off the wax pencil markings.
Data Table
Tube
Contents
Test for Starch
Test for Sugar
weter 8starch
1
Blue
amy lase/stardhlorohge
amyiase/stareh/
HAycralic acıd
4
amylase
gen
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