CAMPBELL BIOLOGY IN FOCUS (LL)-W/MOD.MA
3rd Edition
ISBN: 9780135686065
Author: Urry
Publisher: PEARSON
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Chapter 33.3, Problem 3CC
Summary Introduction
To determine:
What would happen if gastric juice is mixed with crushed food in a test tube.
Introduction:
Gastric juice is secreted by the stomach and it helps in the digestion of the food. Gastric juice contains hydrochloric acid (HCl), mucus, rennin, and pepsin (a protease). It is strongly acidic due to the presence of HCl and has a very low
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Observation
Interpretation
Test Tube 1
H2O2 + 1 piece uncooked potato + 1 mL H2O
Test Tube 2
H2O2 + 1 piece cooked potato + 1 mL H2O
Test Tube 3
H2O2 + 1 piece uncooked potato (cut into small pieces) + 1 mL H2O
Test Tube 4
H2O2 + 1 piece uncooked potato + 1 mL vinegar
does P1000 and P5000 pass validation? Why, why not?
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Q6) Why would a sample be over 100%? Do you think 110% accurate is the same as 90% accurate?
Q1) Why are there 2 different ‘stops’ on the micropipette?
Q2) There’s many mistakes you can make micropipetting. Describe 3 of themQ4) What does a P100 pipette mean? P20?
Chapter 33 Solutions
CAMPBELL BIOLOGY IN FOCUS (LL)-W/MOD.MA
Ch. 33.1 - An animal requires 20 amino acids to make...Ch. 33.1 - Prob. 2CCCh. 33.1 - WHAT IF? if a zoo animal eating ample food shows...Ch. 33.2 - Prob. 1CCCh. 33.2 - In what sense are nutrients from a recently...Ch. 33.2 - Prob. 3CCCh. 33.3 - How does swallowed food reach the stomach of a...Ch. 33.3 - Explain why a proton pump inhibitor, such as the...Ch. 33.3 - Prob. 3CCCh. 33.4 - Prob. 1CC
Ch. 33.4 - Prob. 2CCCh. 33.4 - Prob. 3CCCh. 33.5 - Prob. 1CCCh. 33.5 - The energy required to maintain each gram of body...Ch. 33.5 - Prob. 3CCCh. 33 - The mammalian trachea and esophagus both connect...Ch. 33 - Which organ is incorrectly paired with its...Ch. 33 - Which of the following is not a major activity of...Ch. 33 - Prob. 4TYUCh. 33 - Prob. 5TYUCh. 33 - If you were to jog 1 km a few hours after lunch,...Ch. 33 - Prob. 7TYUCh. 33 - FOCUS ON EVOLUTION The human esophagus and trachea...Ch. 33 - Prob. 9TYUCh. 33 - Prob. 10TYU
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