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