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