Unit #2 Test: Chemical Principles Of Microbiology Question Preview (ID: 48030)
Test Questions Will Cover All The Material From Unit #2: Chemical Principles Of Microbiology.
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What are the building blocks of proteins?
a) Sugars
b) Starches
c) Nucleic acids
d) Amino acids
What is the definition of a Carbohydrate?
a) A biomolecule that includes sugars and starches
b) A biomolecule that produces proteins
c) A biomolecule that includes fats
d) All of the above
Where do we predominantly find lipids in living cells?
a) Cell nucleus
b) Cytoplasm
c) Mitochondria
d) Cell membrane
What are the three categories of carbohydrates?
a) Monosaccharides, polysaccharides, macrosaccharides
b) Monosaccharides, Disaccharides, Macrosaccharides
c) Monosaccharides, Disaccharides, Polysaccharides
d) Polysaccharides, Hexasaccharides, Pentasaccharides
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
What type of reaction is used to form bonds between monosaccharides to create a disaccharide?
a) Hydrolysis Reaction
b) Combustion Reaction
c) Dehydration Synthesis Reaction
d) Double Replacement Reaction
How many monosaccharides does a polysaccharide contain?
a) 2
b) 0
c) 1
d) 3 or more
What is the definition of a macromolecule?
a) A microscopic molecule
b) A biomolecule
c) An extremely large molecule
d) A starch
True or false: Lipids are polar.
a) True
b) False
c)
d)
Lipids make up almost the entire structure of what in a eukaryotic cell?
a) Cell membrane
b) Endoplasmic reticulum
c) Golgi body
d) Nucleus
What type of lipids predominantly make up the cell membrane?
a) Simple
b) Phospholipids
c) Complex
d) Steroids
Steroids can turn into sterols when what is added to a carbon ring in its structure?
a) H+
b) OH-
c) C+
d) NaCl-
What important role do sterols play in the plasma membranes of animal cells?
a) Sterols break down the cell membranes of animal cells.
b) Sterols cross the blood-brain barrier in 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.
What is the function of an enzyme?
a) To start biochemical reactions in the body
b) To speed up biochemical reactions in the body
c) To slow down biochemical reactions in the body
d) To completely stop biochemical reactions in the body
What is the function of a channel protein?
a) To transport substances in and out of a cell
b) To anchor the cell membrane to the cell
c) To allow larger molecules to pass through the membrane of the cell
d) To provide structure and support to the cell membrane
What type of bonds are formed in proteins?
a) Hydrogen bonds
b) Peptide bonds
c) Ionic bonds
d) They do not have bonds
What are the 2 types of nucleic acids?
a) Deoxyribose and Ribose
b) Deoxyribonucleic acid and Ribose
c) Deoxyribose and Ribonucleic acid
d) Deoxyribonucleic acid and Ribonucleic acid
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) Nitrogen-containing base, phosphate group, pentose sugar
d) Hydrogen-containing base, carbon group, hexose sugar
Which are pyrimidines?
a) Adenine and Guanine
b) Adenine and Thymine
c) Uracil and Adenine
d) Thymine, Cytosine, and Uracil
What is the shape of DNA?
a) Single strand
b) Ladder
c) Double helix
d) Triple crown
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