Chapter 4: Biological Molecules
Authored by BIO IS BAE
Biology
5th - 12th Grade
NGSS covered
Used 131+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which simple molecules are the basic units of protein?
amino acids
fatty acids
glucose
vitamins
Tags
NGSS.HS-LS1-6
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Small molecules are used as the basic units in the synthesis of large food molecules.
Which statement is correct?
Amino acids are basic units of carbohydrates.
Fatty acids are basic units of glycogen.
Glycerol is a basic unit of oils.
Simple sugar is a basic unit of protein.
Tags
NGSS.HS-LS1-6
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which nutrient produces a purple colour when mixed with Biuret solution?
fat
protein
reducing sugar
starch
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The diagram shows two food tests carried out on solution X.
Which nutrients are present in solution X?
protein and starch
protein and sugar
starch and fat
starch and sugar
Tags
NGSS.HS-PS1-2
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A student set up a test-tube containing starch, water and amylase.
How could the student test whether the amylase had digested all the starch?
Add Biuret solution.
Add dilute hydrochloric acid.
Add iodine solution.
Weigh the test-tubes and contents before and after the experiment.
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
When solution X is tested with iodine solution, a blue-black colour is observed.
A different solution, Y, is added to a new sample of solution X and the mixture is shaken and left for 30 minutes at 40°C.
When tested with iodine solution again, an orange-brown colour is observed. What are solutions X and Y?
X=maltose, Y=amylase
X=maltose, Y=lipase
X=starch, Y=amylase
X=starch, Y=lipase
Tags
NGSS.HS-PS1-2
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Water is a good solvent.
What does this mean?
It dissolves well in many other substances.
It flows easily through vessels.
It is permeable to gases.
Many substances dissolve well in it.
Tags
NGSS.MS-ESS2-4
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