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BI282 Exam 1 Fall 2014
Name:______________________________
1
bacterial
clean
pure
mixed
The germ theory of disease
A
B
C
D
7
it allowed only warm air to reach the infusion
it trapped microbes that otherwise would have entered the flask
it prevented flies from laying eggs in the broth contained in the flask
it prevented oxygen from reaching organisms inside the flask
Cultures that only contain one kind of organism are called _________ cultures.
A
B
C
D
6
antiviral
antifungal
antibacterial
antihelminthic
The curve in Pasteur's swan neck flasks was important because
A
B
C
D
5
quiz average
each assignment
presentation
all of the above
Lysozyme is an enzyme with ______ properties.
A
B
C
D
4
True
False
Which of the following carries the same weight (in points) as this exam
A
B
C
D
3
Date:_______________________________
In BI282 microbiology, you can make up an exam.
A
B
2
Page 1
states that germs are the fundamental units of life
states that germs can invade other organisms and cause disease
states that germs will spontaneously arise from decaying meat
is another name for the cell theory
Koch's postulates for linking a specific disease with a specific organism does not include
which of the following
A
B
C
D
the specific causative agent must be found in every case of the disease
the disease organisms must be isolated in pure culture
inoculation of a sample of the culture into a healthy, susceptible animal must
produce the same disease
human subjects must be inoculated with the organisms to assay its virulence
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BI282 Exam 1 Fall 2014
8
Two or more atoms of different elements can chemically combine to form a
A
B
C
D
ion
electron shell
tetrad
compound
9
The outer shell of most elements is chemically stable if it contains ___ electrons. (enter a
number)
10
Atoms are most likely to form cations when they
A
B
C
D
11
Ionic bonds are formed because of
A
B
C
D
12
protons
neutrons
electrons
isotopes
When pairs of electrons are shared between two atoms, the result is a(n) ___ bond
A
B
C
D
14
all of the above
charge attraction between ions
sharing of electrons between ions
polar attraction between ions
Chemical bonds form between atoms through the interaction of
A
B
C
D
13
have an even number of electrons in their outer shells
have a nearly empty outer shell
have an odd number of electrons in their outer shells
have four electrons in their outer shells
ionic
covalent
hydrogen
carbonic
All carbohydrates are composed of
A
B
C
D
carbon and hydrogen
carbon and hydrogen and oxygen
carbon and hydrogen and sulfur
carbon and hydrogen and nitrogen
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BI282 Exam 1 Fall 2014
15
The specific sequence of amino acids in a protein is known as a protein's
A
B
C
D
16
A nucleotide contains
A
B
C
D
17
adenine
thymine
cytosine
uracil
Which of the following is not a common bacterial shape
A
B
C
D
20
uracil and thymine
guanine and thymine
cytosine and uracil
thymine and cytosine
Which of the following is found in DNA but not in RNA?
A
B
C
D
19
a nitrogenous base and an amino acid
a six carbon sugar and a phosphate
a five carbon sugar and a nitrogenous base
a phosphate group and a nucleic acid
Adenine will hydrogen bond with
A
B
C
D
18
primary structure
secondary structure
tertiary structure
quaternary structure
spirochete
coccus
disc
bacillus
Streptococci are best illustrated as
A
B
C
D
21
Which of the following cellular structures are found only in prokaryotic cells?
A
B
C
D
endoplasmic reticulum
plasma membrane
ribosomes
pili
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BI282 Exam 1 Fall 2014
22
The outer membrane component of a bacterial cell wall
A
B
C
D
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Which cell wall arrangement has the thickest layer of peptidoglycan?
A
B
C
D
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proteins and sugars
phospholipids and proteins
phospholipids and steroids
proteins and steroids
Bacteria move by means of
A
B
C
D
27
destroying cell membranes
preventing protein synthesis
removing cell walls
preventing peptidoglycan synthesis
Cell membranes are composed primarily of
A
B
C
D
26
Gram positive
Gram negative
Acid fast
They all have equal peptidoglycan thickness
Penicillin controls the growth of bacteria by
A
B
C
D
25
is found only in gram positive bacteria
is made primarily of peptidoglycan
may contain endotoxins
may play a role in reproduction
cilia
flagella
pili
all of the above
Which of the following shows a amphitrichous bacterium?
A
B
C
28
Mitochondria
A
B
C
D
are responsible for converting sunlight to chemical energy
are present only in photosynthetic organisms
have a double membrane
are responsible for protein synthesis
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BI282 Exam 1 Fall 2014
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The rough endoplasmic reticulum appears rough because of
A
B
C
D
30
The site of protein production in a prokaryotic cell is
A
B
C
D
31
gain of electrons, loss of protons
loss of electrons, gain of protons
loss of electrons, gain of electrons
loss of protons, gain of protons
Electrons play a role in the energy carried by ________.
A
B
C
D
E
F
G
34
mitochondria and chloroplasts are about the same size as prokaryotic cells
mitochondria have their own DNA
when removed from bacteria, chloroplasts continue to grow and divide
mitochondria have ribosomes similar in size to bacterial ribosomes
All of the above lend support
Oxidation is defined as the ___ while reduction is the ____.
A
B
C
D
33
the phospholipid bilayer
the cytoplasm
a ribosome
the nuclear region
Which of the following is NOT used to lend support to the endosymbiotic hypothesis
A
B
C
D
E
32
sterols in its membrane
fats and sugars on its surface
multiple ribosomes on its surface
all of the above
ATP
NAD
FAD
a and b
a and c
b and c
a, b, and c
An enzyme-substrate complex forms when substrate bind to an enzyme at the enzyme's
_____ site.
A
B
C
D
catalytic
allosteric
operative
active
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BI282 Exam 1 Fall 2014
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An inorganic ion such as zinc or manganese that is needed for an enzyme to function is
acting as a
A
B
C
D
36
Competitive inhibition of enzymes occurs when the inhibitor
A
B
C
D
37
1
2
3
4
During glycolysis a total of ___ ATP's are formed with a net yield of ___ ATP's for each
molecule of glucose.
A
B
C
D
E
F
40
temperature
pH
concentration of enzyme
all of the above
In glycolysis, each molecule of glucose eventually produces ___ molecules of pyruvic acid.
A
B
C
D
39
binds to the active site of the enzyme
binds to another site (not the active site) of the enzyme
changes the shape of the enzyme
is acted upon by the enzyme
Factors that affect the rate of enzyme catalyzed reactions include
A
B
C
D
38
coenzyme
cofactor
substrate
product
8, 4
6, 4
4, 4
8, 2
6, 2
4, 2
During glycolysis, electrons are initially transferred to
A
B
C
D
NAD
FAD
NADP
H2O
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BI282 Exam 1 Fall 2014
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Pyruvic acid is metabolized in the absence of oxygen during the process of
A
B
C
D
42
cell wall
cell membrane
cytoplasm
mitochondria
Deamination is an important process in the breakdown of
A
B
C
D
47
32
34
36
38
In prokaryotic organisms, the electron transport chain can be found in the
A
B
C
D
46
1
2
4
6
The prokaryotic aerobic metabolism of glucose produces a total (net) of ___ molecules of
ATP
A
B
C
D
45
glycolysis
the Kreb's cycle
the electron transport chain
all of the above produce the same amount of ATP
Each acetyl group (2C) that enters the Krebs cycle eventually produces this many molecules
of carbon dioxide
A
B
C
D
44
glycolysis
fermentation
oxidation
reduction
During aerobic respiration, most ATP is produced as a result of
A
B
C
D
43
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carbohydrates
proteins
lipids
nucleic acids
Which of the following is NOT part of the normal flora of the human body?
A
B
C
D
E
Staphylococcus aureus
Micrococcus luteus
Escherichia coli
Lactobacillus acidophilus
they are all part of the normal flora
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BI282 Exam 1 Fall 2014
48
Knowing that Lactobacillus acidophilus produces lactic acid from sugars allows you to
determine that this organism must follow which fermentation pathway?
A
B
C
D
E
49
Which of the organisms listed has all of the following characteristics: produces yellow
pigment (carotenoids) that act as antioxidants, may be resistant to many different
antibiotics.
A
B
C
D
50
alcoholic
mixed acid
homolactic acid
butanediol
none of the above
Clostridium difficile
Staphylococcus aureus
Lactobacillus acidophilus
Escherichia coli
Clostridium difficile
A
B
C
D
is relatively rare
is part of the normal skin flora of some people
produces exotoxins that disrupt the lining of the intestine
all of the above
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BI282 Exam 1 Fall 2014
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Answer Key : BI282 Exam 1 Fall 2014
Question:
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Answer
B
C
C
B
C
B
D
D
8 (+/- 0%)
B
B
C
B
B
A
C
A
B
C
C
D
C
A
D
B
B
B
C
C
C
E
C
G
D
B
A
D
B
F
A
B
C
B
D
BI282 Exam 1 Fall 2014
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50
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B
B
E
C
B
C