Why does in this experiment, after gel is formed from gelatin the marble in papaya juice to the first cup (Lot A), second cup (Lot B) and 10 ml of kiwi juice to the third cup (Lot C) disappeared? While in fourth cup (control) the marble did not disappear it just float on the surface. What is the action of protease on gelatin?
Why does in this experiment, after gel is formed from gelatin the marble in papaya juice to the first cup (Lot A), second cup (Lot B) and 10 ml of kiwi juice to the third cup (Lot C) disappeared? While in fourth cup (control) the marble did not disappear it just float on the surface. What is the action of protease on gelatin?
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
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Why does in this experiment, after gel is formed from gelatin the marble in papaya juice to the first cup (Lot A), second cup (Lot B) and 10 ml of kiwi juice to the third cup (Lot C) disappeared? While in fourth cup (control) the marble did not disappear it just float on the surface. What is the action of protease on gelatin?
Transcribed Image Text:MATERIALS:
Transparent plastic cups
Ice cubes
Gelatin (1 envelope)
Graduated cylinder
Papaya juice (fresh)
Kiwi juice (fresh)
Pineapple juice (fresh)
Cheesecloth
Marbles (4)
Pan
PROCEDURE:
1.
Chop fruit finely. Place in a cheesecloth and press. Collect extracted juice and set aside.
2.
Prepare gelatin dessert according to the package directions.
3.
Pour 90 ml of gelatin into each four plastic cups.
4.
Place cups in a pan filled with ice cubes. Place in a refrigerator until set
5.
After the gel is formed, add 10 ml of papaya juice to the first cup (Lot A); 10 ml of pineapple juice to
the second cup (Lot B) and 10 ml of kiwi juice to the third cup (Lot C)
6.
Do not add anything on the fourth cup (Control).
Place a marble on top of each gelatin and let stand at room temperature.
7.
8.
Note observations at the end of the laboratory period.
Transcribed Image Text:LOT
BEFORE
AFTER
А (РАРAYA)
B
(PINEAPPLE)
(KIWI)
D
FYREP
(CONTROL)
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