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POST-LAB QUESTIONS D. Barfoed's Test 1. Describe the evidence for a positive test. 2. What does a positive test indicate?_ 3. What is the chemical basis for a positive test? 4. Circle the names of the substances that gave a positive test. Glucose Fructose Lactose Sucrose Starch

POST-LAB QUESTIONS D. Barfoed's Test 1. Describe the evidence for a positive test. 2. What does a positive test indicate?_ 3. What is the chemical basis for a positive test? 4. Circle the names of the substances that gave a positive test. Glucose Fructose Lactose Sucrose Starch

Biochemistry
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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BARFOED'S TEST You can use this as your reference : https://youtu.be/rKng5-ij6kQ
A. Characteristic Tests of Carbohydrates Sample Barfoed's Molisch Test Benedict's Test Seliwanoff's Test lodine's Test Fehling's Test Solutions Test Glucose Positive Positive Negative Positive Negative Positive Fructose Positive Positive Negative Positive Negative Positive Lactose Positive Positive Negative Negative Negative Positive Negative Negative Negative Positive Negative Sucrose Positive starch Negative Negative Positive Negative Negative Negative POST-LAB QUESTIONS D. Barfoed's Test 1. Describe the evidence for a positive test. 2. What does a positive test indicate? 3. What is the chemical basis for a positive test? 4. Circle the names of the substances that gave a positive test. Glucose Fructose Lactose Sucrose Starch
Transcribed Image Text:A. Characteristic Tests of Carbohydrates Sample Barfoed's Molisch Test Benedict's Test Seliwanoff's Test lodine's Test Fehling's Test Solutions Test Glucose Positive Positive Negative Positive Negative Positive Fructose Positive Positive Negative Positive Negative Positive Lactose Positive Positive Negative Negative Negative Positive Negative Negative Negative Positive Negative Sucrose Positive starch Negative Negative Positive Negative Negative Negative POST-LAB QUESTIONS D. Barfoed's Test 1. Describe the evidence for a positive test. 2. What does a positive test indicate? 3. What is the chemical basis for a positive test? 4. Circle the names of the substances that gave a positive test. Glucose Fructose Lactose Sucrose Starch
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