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Unit #2 Test: Chemical Principles Of Microbiology
Test Description: Test questions will cover all the material from Unit #2: Chemical Principles of Microbiology
Instructions: Answer all questions to get your test result.
1) What are the building blocks of proteins?
A
Sugars
B
Nucleic acids
C
Starches
D
Amino acids
2) What is the definition of a Carbohydrate?
A
A biomolecule that includes fats
B
A biomolecule that includes sugars and starches
C
A biomolecule that produces proteins
D
All of the above
3) Where do we predominantly find lipids in living cells?
A
Mitochondria
B
Cytoplasm
C
Cell membrane
D
Cell nucleus
4) What are the three categories of carbohydrates?
A
Monosaccharides, polysaccharides, macrosaccharides
B
Polysaccharides, Hexasaccharides, Pentasaccharides
C
Monosaccharides, Disaccharides, Polysaccharides
D
Monosaccharides, Disaccharides, Macrosaccharides
5) What is a hexose?
A
A starch with 7 carbons
B
A sugar with 6 hydrogens
C
A sugar with 8 carbons
D
A sugar with 6 carbons
6) What type of reaction is used to form bonds between monosaccharides to create a disaccharide?
A
Dehydration Synthesis Reaction
B
Combustion Reaction
C
Double Replacement Reaction
D
Hydrolysis Reaction
7) How many monosaccharides does a polysaccharide contain?
A
2
B
3 or more
C
1
D
0
8) What is the definition of a macromolecule?
A
A microscopic molecule
B
An extremely large molecule
C
A biomolecule
D
A starch
9) True or false: Lipids are polar.
A
False
B
True
10) Lipids make up almost the entire structure of what in a eukaryotic cell?
A
Golgi body
B
Endoplasmic reticulum
C
Nucleus
D
Cell membrane
11) What type of lipids predominantly make up the cell membrane?
A
Steroids
B
Phospholipids
C
Complex
D
Simple
12) Steroids can turn into sterols when what is added to a carbon ring in its structure?
A
C+
B
NaCl-
C
H+
D
OH-
13) What important role do sterols play in the plasma membranes of animal cells?
A
Sterols cross the blood-brain barrier in the cell membranes of animal cells.
B
Sterols break down the cell membranes of animal cells.
C
Sterols create the cell membranes of animal cells.
D
Sterols maintain equilibrium inside the membranes of animal cells.
14) What is the function of an enzyme?
A
To completely stop biochemical reactions in the body
B
To speed up biochemical reactions in the body
C
To start biochemical reactions in the body
D
To slow down biochemical reactions in the body
15) What is the function of a channel protein?
A
To allow larger molecules to pass through the membrane of the cell
B
To anchor the cell membrane to the cell
C
To transport substances in and out of a cell
D
To provide structure and support to the cell membrane
16) What type of bonds are formed in proteins?
A
Peptide bonds
B
Hydrogen bonds
C
They do not have bonds
D
Ionic bonds
17) What are the 2 types of nucleic acids?
A
Deoxyribonucleic acid and Ribonucleic acid
B
Deoxyribonucleic acid and Ribose
C
Deoxyribose and Ribonucleic acid
D
Deoxyribose and Ribose
18) What are the 3 parts of the structure of a nucleotide?
A
Nitrogen-containing base, phosphate group, hexose sugar
B
Carbon-containing base, phosphate group, pentose sugar
C
Hydrogen-containing base, carbon group, hexose sugar
D
Nitrogen-containing base, phosphate group, pentose sugar
19) Which are pyrimidines?
A
Adenine and Thymine
B
Adenine and Guanine
C
Uracil and Adenine
D
Thymine, Cytosine, and Uracil
20) What is the shape of DNA?
A
Single strand
B
Triple crown
C
Ladder
D
Double helix
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