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BSC 1010 LAB FINAL EXAM QUESTIONS WITH COMPLETE SOLUTIONS LATEST UPDATE
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BSC 1010 LAB FINAL EXAM QUESTIONS WITH COMPLETE SOLUTIONS LATEST UPDATE Reagants 1. Benedicts 2. Lugols 3. Grease Spot Test 4. Sudan IV 5. Ninhydrin 6. Biuret Benedicts is used to test for test for reducing sugars Benedicts positive reaction green brick red yellow orange Benedicts n...

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  • September 22, 2024
  • 29
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • bsc 1010 lab final exam questions with complete so

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BSC 1010 LAB FINAL EXAM QUESTIONS WITH COMPLETE

SOLUTIONS LATEST UPDATE

Reagants

1. Benedicts

2. Lugols

3. Grease Spot Test

4. Sudan IV

5. Ninhydrin

6. Biuret

Benedicts is used to test for

test for reducing sugars

Benedicts positive reaction

green

brick red

yellow

orange

Benedicts negative reaction

blue

Benedicts test used

7 test tubes of various solution in a test tube rack

a. water turned *blue*

,b. glucose turned *brown*

c. maltose turned *yellow*

d. albumin *turned: No change because protein*

e. starch turned *yellow*

f. milk turned *not change because of Lactose*

g. onion juice *not changed;*



**A TO D ARE WATER SOLUBLE*

Benedicts dependent variable

color liquid turns

Benedicts independent variable

type of solution

color

Benedicts Control

Water in beaker

Benedicts Constant Variables

1. amount of reagent

2. size of test tube

3. Heat

4. Same benedicts solution

what is unique about benedicts solution?

must be heated up in test tube inside of a beaker on a hot plate

Lugol's solution

, tests for starch

:Lugol's Positive reaction

blueish/black

Lugol's Negative reaction

brown

amber

soy sauce color

Lugol's formula

I2KI

Grease Spot test

tests for

1. fats

2. lipids

Grease Spot positive Reaction

grease spot stain on grease spot test paper

Grease Spot Negative Reaction

no grease spot

Grease Spot on:

brown paper

Sudan IV

tests for:

1. fats

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