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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
Starches
B
Sugars
C
Nucleic acids
D
Amino acids
2) What is the definition of a Carbohydrate?
A
A biomolecule that produces proteins
B
A biomolecule that includes fats
C
All of the above
D
A biomolecule that includes sugars and starches
3) Where do we predominantly find lipids in living cells?
A
Cytoplasm
B
Cell nucleus
C
Cell membrane
D
Mitochondria
4) What are the three categories of carbohydrates?
A
Monosaccharides, Disaccharides, Polysaccharides
B
Monosaccharides, Disaccharides, Macrosaccharides
C
Monosaccharides, polysaccharides, macrosaccharides
D
Polysaccharides, Hexasaccharides, Pentasaccharides
5) What is a hexose?
A
A starch with 7 carbons
B
A sugar with 6 carbons
C
A sugar with 8 carbons
D
A sugar with 6 hydrogens
6) What type of reaction is used to form bonds between monosaccharides to create a disaccharide?
A
Combustion Reaction
B
Hydrolysis Reaction
C
Double Replacement Reaction
D
Dehydration Synthesis Reaction
7) How many monosaccharides does a polysaccharide contain?
A
3 or more
B
0
C
1
D
2
8) What is the definition of a macromolecule?
A
A biomolecule
B
A starch
C
A microscopic molecule
D
An extremely large molecule
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
Cell membrane
B
Endoplasmic reticulum
C
Nucleus
D
Golgi body
11) What type of lipids predominantly make up the cell membrane?
A
Complex
B
Simple
C
Steroids
D
Phospholipids
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 create the cell membranes of animal cells.
B
Sterols maintain equilibrium inside the membranes of animal cells.
C
Sterols cross the blood-brain barrier in the cell membranes of animal cells.
D
Sterols break down the cell membranes of animal cells.
14) What is the function of an enzyme?
A
To speed up biochemical reactions in the body
B
To completely stop biochemical reactions in the body
C
To slow down biochemical reactions in the body
D
To start biochemical reactions in the body
15) What is the function of a channel protein?
A
To provide structure and support to the cell membrane
B
To allow larger molecules to pass through the membrane of the cell
C
To transport substances in and out of a cell
D
To anchor the cell membrane to the cell
16) What type of bonds are formed in proteins?
A
Ionic bonds
B
Peptide bonds
C
Hydrogen bonds
D
They do not have bonds
17) What are the 2 types of nucleic acids?
A
Deoxyribose and Ribonucleic acid
B
Deoxyribonucleic acid and Ribonucleic acid
C
Deoxyribose and Ribose
D
Deoxyribonucleic acid and Ribose
18) What are the 3 parts of the structure of a nucleotide?
A
Hydrogen-containing base, carbon group, hexose sugar
B
Nitrogen-containing base, phosphate group, pentose sugar
C
Nitrogen-containing base, phosphate group, hexose sugar
D
Carbon-containing base, phosphate group, pentose sugar
19) Which are pyrimidines?
A
Adenine and Guanine
B
Uracil and Adenine
C
Adenine and Thymine
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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