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Organic Molecules Lab And Review
Test Description: Organic Molecules Lab
Instructions: Answer all questions to get your test result.
1) Silver nitrate tests for:
A
Salt
B
Sugar
C
Protein
D
Fats
2) Iodine was used to test for:
A
Protein
B
Simple Sugar
C
Salt
D
Starch
3) Benedict's test for:
A
Sugars
B
Protein
C
Salt
D
Starch
4) Positive test for the Biuret's test is:
A
A white, cloudy appearance
B
a light purple (violet) color
C
A blue color
D
Red ring on the top
5) A negative result of the benedict's test is a:
A
cloudy, white appearance
B
None of these
C
blue color
D
dark blue or black color
6) A negative result for the silver nitrate test is a:
A
clear color
B
green color
C
cloudy, white appearance
D
yellowish orange color
7) A positive result for the coagulation test is a:
A
purple or violet color
B
white, cloudy and posibily a gel-like appearance
C
yellowish orange color
D
red ring on top
8) The coagulation test is used to detect:
A
proteins
B
fats
C
salts
D
sugars
9) The biuret's test is used to detect:
A
proteins
B
fats
C
starch
D
salts
10) A positive result of the benedict's test is a:
A
orange color
B
white color
C
blue color
D
green color
11) Organic molecules that have the same molecular formulas, but different arrangements of the atoms are
A
Mirror images
B
Isomers
C
None of these, because this cannot happen
D
Isotopes
12) Polypeptide chains form sheets and coils make up this structure of proteins.
A
Secondary
B
Tertiary
C
Primary
D
Quaternary
13) This bond occurs when the atoms donate or accept electron(s).
A
Polar covalent
B
Nonpolar covalent
C
Hydrogen
D
Ionic
14) This main function of this macromolecule is to provide energy to the cell.
A
Chitin
B
ATP
C
Nucleotides
D
Glucose
15) This type of bond holds together the double helix of DNA.
A
Hydrogen
B
Nonpolar covalent
C
Ionic
D
Polar covalent
*select an answer for all questions
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