BIOL 220 Exam 1 UTK questions with
|\ |\ |\ |\ |\ |\ |\
answers
Which of the following is/are shared by all cells?
|\ |\ |\ |\ |\ |\ |\ |\
a) Mitochondria
|\
b) Endoplasmic Reticulum
|\ |\
c) Nucleus
|\
d) Cell Membrane - CORRECT ANSWERS ✔✔d) Cell
|\ |\ |\ |\ |\ |\ |\ |\
Membrane
Which of the following best supports the endosymbiotic
|\ |\ |\ |\ |\ |\ |\ |\
theory?
a) Mitochondria synthesize ATP
|\ |\ |\
b) Chloroplasts and mitochondria both use host cell ATP
|\ |\ |\ |\ |\ |\ |\ |\ |\
synthases for energy generation
|\ |\ |\
c) Chloroplasts synthesize glucose
|\ |\ |\
d) Chloroplasts and mitochondria both maintain their own
|\ |\ |\ |\ |\ |\ |\
unique DNA - CORRECT ANSWERS ✔✔d) Chloroplasts and
|\ |\ |\ |\ |\ |\ |\ |\
mitochondria both maintain their own unique DNA
|\ |\ |\ |\ |\ |\ |\
,In order to establish a biofilm within the intestines of
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
humans, bacteria may adhere initially to the intestinal
|\ |\ |\ |\ |\ |\ |\ |\
wall using _______ before secreting a polymeric matrix.
|\ |\ |\ |\ |\ |\ |\
a) Fimbriae
|\
b) Glycoprotein Spikes
|\ |\
c) Cilia
|\
d) Teichoic Acids - CORRECT ANSWERS ✔✔a) Fimbriae
|\ |\ |\ |\ |\ |\ |\
Bacteria have been treated with oligomycin, which
|\ |\ |\ |\ |\ |\ |\
inhibits ATP synthase. Which of the following transport
|\ |\ |\ |\ |\ |\ |\ |\
process(es) will be affected? |\ |\ |\
I. O2 movement across the plasma membrane
|\ |\ |\ |\ |\ |\
II. Water movement across the membrane
|\ |\ |\ |\ |\
III. Antibiotic efflux using an ABC transporter - CORRECT
|\ |\ |\ |\ |\ |\ |\ |\ |\
ANSWERS ✔✔III only :Antibiotic efflux using an ABC
|\ |\ |\ |\ |\ |\ |\ |\
transporter (because ABC transporters rely on ATP |\ |\ |\ |\ |\ |\ |\
synthase)
Why is penicillin ineffective in treating "walking
|\ |\ |\ |\ |\ |\ |\
pneumonia," an infection typically caused by |\ |\ |\ |\ |\ |\
Mycoplasma?
,a) Because Mycoplasma is gram-positive
|\ |\ |\ |\
b) Because Mycoplasma is gram-negative
|\ |\ |\ |\
c) Because Mycoplasma lacks a cell wall
|\ |\ |\ |\ |\ |\
d) Because Mycoplasma is acid-fast - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\
✔✔c) Mycoplasma lacks a cell wall
|\ |\ |\ |\ |\ |\
(penicillin works by preventing complete formation of the
|\ |\ |\ |\ |\ |\ |\ |\
cell wall) |\
True or False: Quorum sensing only occurs when bacteria
|\ |\ |\ |\ |\ |\ |\ |\ |\
turn on antibiotic resistance genes when enough bacteria
|\ |\ |\ |\ |\ |\ |\ |\
are living in one place. - CORRECT ANSWERS ✔✔False
|\ |\ |\ |\ |\ |\ |\ |\
You grow a bacterium in many oxygen concentrations.
|\ |\ |\ |\ |\ |\ |\ |\
The bacterium takes 45 minutes to double if grown in a
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
high oxygen environment. If this bacterium is a
|\ |\ |\ |\ |\ |\ |\ |\
facultative anaerobe and you now incubate in a tube with |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
no oxygen, you would expect the doubling time of this
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
bacterium to: |\
a) stay the same
|\ |\ |\
b) increase
|\
c) decrease - CORRECT ANSWERS ✔✔b) increase
|\ |\ |\ |\ |\ |\
, Which treatment induces pyrimidine dimers that may
|\ |\ |\ |\ |\ |\ |\
inhibit DNA replication and transcription?
|\ |\ |\ |\
a) Exposure to ultraviolet radiation
|\ |\ |\ |\
b) Exposure to temperatures of 200°C
|\ |\ |\ |\ |\
c) Exposure to pressures great than 1,000 psi
|\ |\ |\ |\ |\ |\ |\
d) Exposure to a solution of 70% isopropyl alcohol -
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
CORRECT ANSWERS ✔✔a) Exposure to UV radiation
|\ |\ |\ |\ |\ |\
Formation of endospores: |\ |\
a) Occurs in all bacterial cells
|\ |\ |\ |\ |\
b) Occurs when the cell has excess polyphosphate
|\ |\ |\ |\ |\ |\ |\
c) Is called germination
|\ |\ |\
d) Allows bacterial reproduction
|\ |\ |\
e) Can be triggered by adverse environmental conditions
|\ |\ |\ |\ |\ |\ |\
- CORRECT ANSWERS ✔✔e) Can be triggered by adverse
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
environmental conditions |\
In bacterial cells, ribosomes are packed into the
|\ |\ |\ |\ |\ |\ |\ |\
cytoplasmic matrix and also loosely attached to the |\ |\ |\ |\ |\ |\ |\ |\
plasma membrane. What is the function of ribosomes?
|\ |\ |\ |\ |\ |\ |\
a) Site of protein synthesis
|\ |\ |\ |\
|\ |\ |\ |\ |\ |\ |\
answers
Which of the following is/are shared by all cells?
|\ |\ |\ |\ |\ |\ |\ |\
a) Mitochondria
|\
b) Endoplasmic Reticulum
|\ |\
c) Nucleus
|\
d) Cell Membrane - CORRECT ANSWERS ✔✔d) Cell
|\ |\ |\ |\ |\ |\ |\ |\
Membrane
Which of the following best supports the endosymbiotic
|\ |\ |\ |\ |\ |\ |\ |\
theory?
a) Mitochondria synthesize ATP
|\ |\ |\
b) Chloroplasts and mitochondria both use host cell ATP
|\ |\ |\ |\ |\ |\ |\ |\ |\
synthases for energy generation
|\ |\ |\
c) Chloroplasts synthesize glucose
|\ |\ |\
d) Chloroplasts and mitochondria both maintain their own
|\ |\ |\ |\ |\ |\ |\
unique DNA - CORRECT ANSWERS ✔✔d) Chloroplasts and
|\ |\ |\ |\ |\ |\ |\ |\
mitochondria both maintain their own unique DNA
|\ |\ |\ |\ |\ |\ |\
,In order to establish a biofilm within the intestines of
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
humans, bacteria may adhere initially to the intestinal
|\ |\ |\ |\ |\ |\ |\ |\
wall using _______ before secreting a polymeric matrix.
|\ |\ |\ |\ |\ |\ |\
a) Fimbriae
|\
b) Glycoprotein Spikes
|\ |\
c) Cilia
|\
d) Teichoic Acids - CORRECT ANSWERS ✔✔a) Fimbriae
|\ |\ |\ |\ |\ |\ |\
Bacteria have been treated with oligomycin, which
|\ |\ |\ |\ |\ |\ |\
inhibits ATP synthase. Which of the following transport
|\ |\ |\ |\ |\ |\ |\ |\
process(es) will be affected? |\ |\ |\
I. O2 movement across the plasma membrane
|\ |\ |\ |\ |\ |\
II. Water movement across the membrane
|\ |\ |\ |\ |\
III. Antibiotic efflux using an ABC transporter - CORRECT
|\ |\ |\ |\ |\ |\ |\ |\ |\
ANSWERS ✔✔III only :Antibiotic efflux using an ABC
|\ |\ |\ |\ |\ |\ |\ |\
transporter (because ABC transporters rely on ATP |\ |\ |\ |\ |\ |\ |\
synthase)
Why is penicillin ineffective in treating "walking
|\ |\ |\ |\ |\ |\ |\
pneumonia," an infection typically caused by |\ |\ |\ |\ |\ |\
Mycoplasma?
,a) Because Mycoplasma is gram-positive
|\ |\ |\ |\
b) Because Mycoplasma is gram-negative
|\ |\ |\ |\
c) Because Mycoplasma lacks a cell wall
|\ |\ |\ |\ |\ |\
d) Because Mycoplasma is acid-fast - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\
✔✔c) Mycoplasma lacks a cell wall
|\ |\ |\ |\ |\ |\
(penicillin works by preventing complete formation of the
|\ |\ |\ |\ |\ |\ |\ |\
cell wall) |\
True or False: Quorum sensing only occurs when bacteria
|\ |\ |\ |\ |\ |\ |\ |\ |\
turn on antibiotic resistance genes when enough bacteria
|\ |\ |\ |\ |\ |\ |\ |\
are living in one place. - CORRECT ANSWERS ✔✔False
|\ |\ |\ |\ |\ |\ |\ |\
You grow a bacterium in many oxygen concentrations.
|\ |\ |\ |\ |\ |\ |\ |\
The bacterium takes 45 minutes to double if grown in a
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
high oxygen environment. If this bacterium is a
|\ |\ |\ |\ |\ |\ |\ |\
facultative anaerobe and you now incubate in a tube with |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
no oxygen, you would expect the doubling time of this
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
bacterium to: |\
a) stay the same
|\ |\ |\
b) increase
|\
c) decrease - CORRECT ANSWERS ✔✔b) increase
|\ |\ |\ |\ |\ |\
, Which treatment induces pyrimidine dimers that may
|\ |\ |\ |\ |\ |\ |\
inhibit DNA replication and transcription?
|\ |\ |\ |\
a) Exposure to ultraviolet radiation
|\ |\ |\ |\
b) Exposure to temperatures of 200°C
|\ |\ |\ |\ |\
c) Exposure to pressures great than 1,000 psi
|\ |\ |\ |\ |\ |\ |\
d) Exposure to a solution of 70% isopropyl alcohol -
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
CORRECT ANSWERS ✔✔a) Exposure to UV radiation
|\ |\ |\ |\ |\ |\
Formation of endospores: |\ |\
a) Occurs in all bacterial cells
|\ |\ |\ |\ |\
b) Occurs when the cell has excess polyphosphate
|\ |\ |\ |\ |\ |\ |\
c) Is called germination
|\ |\ |\
d) Allows bacterial reproduction
|\ |\ |\
e) Can be triggered by adverse environmental conditions
|\ |\ |\ |\ |\ |\ |\
- CORRECT ANSWERS ✔✔e) Can be triggered by adverse
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
environmental conditions |\
In bacterial cells, ribosomes are packed into the
|\ |\ |\ |\ |\ |\ |\ |\
cytoplasmic matrix and also loosely attached to the |\ |\ |\ |\ |\ |\ |\ |\
plasma membrane. What is the function of ribosomes?
|\ |\ |\ |\ |\ |\ |\
a) Site of protein synthesis
|\ |\ |\ |\
