
Exploring Biomolecules in Bio141 Lab
Interactive Video
•
Science
•
6th - 10th Grade
•
Hard
Standards-aligned

Liam Anderson
FREE Resource
Standards-aligned
Read more
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary purpose of setting up positive and negative controls in the biomolecules demonstration?
To make the experiment look more colorful
To use up all the reagents
To compare the test results with known outcomes
To ensure the test tubes are clean
Tags
NGSS.HS-ETS1-3
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is added to the test tubes initially in the demonstration?
Proteins
Starch
Water
Reagents
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which reagent is used to test for the presence of starches?
Biuret
Sudan IV
Lugol's solution
Benedict's solution
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What color change indicates a positive reaction with Lugol's solution?
Blue to orange
Blue to purple
Amber to black
Red to green
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which reagent is used to test for proteins?
Lugol's solution
Biuret
Benedict's solution
Sudan IV
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is it recommended to wear gloves when handling Sudan IV solution?
It is very slippery
It is very hot
It can stain the skin
It is very cold
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the indicator for lipids in the demonstration?
Lugol's solution
Biuret
Sudan IV
Benedict's solution
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