KU Bio 400 Final exam questions with verified answers
Which of the three domains of life include(s) microorganisms?
A.
Bacteria
B.
Eukarya
C.
Archaea - ** VERIFIED ANSWERS **✔✔All three domains of life include microorganisms
Which of the following is FALSE about the Miller-Urey experiment?
A. This experiment was an attempt at simulating early earth conditions in order to test ideas
about the origin of life.
B. It demonstrated that biomolecules could be formed under "early-life like" conditions.
C. It tested the idea that early life might have emerged from chemistry.
D. "It used simple gases such as methane, ammonia, and hydrogen to mimic the early earth
atmosphere."
E. The goal of the experiment was to create a living organism. - ** VERIFIED ANSWERS
**✔✔E. The goal of the experiment was to create a living organism
What did the Miller-Urey experiment demonstrate?
A. The experiments demostrated that macromolecules could be formed from early earth like
conditions
B. They demonstrated that maggots could spontaneously appear on meat
C. They showed that cholera was caused by microbe
D. They illustrated the importance of fossil records when dating the appearance of microbes
on earth
,E. They showed that life could be created by simulating early earth like condition - **
VERIFIED ANSWERS **✔✔A. The experiments demonstrated that macromolecules could
be formed from early earth like conditions
Which of the following is NOT a supporting piece of evidence for the Endosymbiotic Theory
of Eukaryotic Evolution?
A. Mitochondria have a double membrane
B. Mitochondrial DNA is circular and replicates independent of the nuclear genome
C. Mitochondria contian their own ribosomes which are sensitive to antibiotics that target
bacterial ribosomes
D. Mitochondria have a nucleus where transcription and translation are coupled
E. Mitochondria are similar in size to prokaryotic cells - ** VERIFIED ANSWERS **✔✔D.
Mitochondria have a nucleus where transcription and translation are coupled
The first person to visualize individual microbial cells using a high-powered magnifying
glass was ____________.
A. Antonie van Leeuwenhoek
B. Robert Hooke
C. Louis Pasteur
D. Lady Montagu
E. Edward Jenner - ** VERIFIED ANSWERS **✔✔A. Antonie van Leeuwenhoek
Cholesterol dependent cytolysins are toxins secreted by certain bacterial species. These
toxins require cholesterol in the membrane for action, would they act on bacterial
membranes?
A. Yes, they would act on all types of bacteria.
B. No, they would only target eukaryotic cell membranes.
C. They would only act on gram-negative bacteria.
D. They would only act on gram-positive bacteria. - ** VERIFIED ANSWERS **✔✔B. No,
they would only target eukaryotic cell membranes
,Oxygen is transported across the membrane via________.
A. Primary active transport
B. Secondary active transport
C. Simple diffusion
D. Facilitated diffusion
E. Group translocation - ** VERIFIED ANSWERS **✔✔C. Simple diffusion
Gram-positive cell envelopes do NOT include which of the following?
A. Teichoic acids
B. Lipoteichoic acids
C. Thick layers of peptidoglycan
D. Plasma membranes
E. Lipopolysaccharides (LPS - ** VERIFIED ANSWERS **✔✔E. Lipopolysaccharides (LPS)
The structure shown in the image is found in the _________ of bacteria. The larger
molecules (NAG, NAM) are connected together by the _______ cross-linker shown at the
arrow.
A. Cell wall; sugar
B. Cell membrane; peptide
C. Cell membrane; sugar
D. Cell wall; peptide
E. Capsule, sugar - ** VERIFIED ANSWERS **✔✔D. Cell wall; peptide
Which component is found in gram-negative but not gram-positive bacteria?
A. Lipoteichoic acids (LTA)
B. Lipopolysaccharide (LPS)
, C. Periplasmic space
D. Outer membrane
E. Three of the above are found in gram-negative but not gram-positive bacteria
F. Two of the above are found in gram-negative but not gram-positive bacteria. - **
VERIFIED ANSWERS **✔✔F. Two of the above are found in gram-negative but not gram-
positive bacteria
The halo region surrounding the bacterium in this slide is a ______ and is composed of
______.
A. Capsule; proteins
B. Nucleoid; DNA
C. Outer membrane; phospholipids
D. Capsule; carbohydrates
E. S Layer; LPS - ** VERIFIED ANSWERS **✔✔D. Capsule; Carbohydrates
Which of the following statements about the bacterial flagella is INCORRECT?
A. Some flagella components are anchored in the layers of the cell envelope.
B. Flagella can be observed using an electron microscope.
C. Flagella can rotate clockwise or counter clockwise.
D. Flagella are used for chemotaxis towards or away from a substance.
E. Flagella are found on all bacteria types during some point in their life cycle. - **
VERIFIED ANSWERS **✔✔E. Flagella are found on all bacteria types during some point in
theri life cycle
Which of the following statements about bacterial endospores is TRUE?
A. Most bacterial species can form endospores.
B. Endospore formation is triggered by lack of nutrients in the environment.
C. Endospores are resistant to heat but sensitive to UV irradiation.
Which of the three domains of life include(s) microorganisms?
A.
Bacteria
B.
Eukarya
C.
Archaea - ** VERIFIED ANSWERS **✔✔All three domains of life include microorganisms
Which of the following is FALSE about the Miller-Urey experiment?
A. This experiment was an attempt at simulating early earth conditions in order to test ideas
about the origin of life.
B. It demonstrated that biomolecules could be formed under "early-life like" conditions.
C. It tested the idea that early life might have emerged from chemistry.
D. "It used simple gases such as methane, ammonia, and hydrogen to mimic the early earth
atmosphere."
E. The goal of the experiment was to create a living organism. - ** VERIFIED ANSWERS
**✔✔E. The goal of the experiment was to create a living organism
What did the Miller-Urey experiment demonstrate?
A. The experiments demostrated that macromolecules could be formed from early earth like
conditions
B. They demonstrated that maggots could spontaneously appear on meat
C. They showed that cholera was caused by microbe
D. They illustrated the importance of fossil records when dating the appearance of microbes
on earth
,E. They showed that life could be created by simulating early earth like condition - **
VERIFIED ANSWERS **✔✔A. The experiments demonstrated that macromolecules could
be formed from early earth like conditions
Which of the following is NOT a supporting piece of evidence for the Endosymbiotic Theory
of Eukaryotic Evolution?
A. Mitochondria have a double membrane
B. Mitochondrial DNA is circular and replicates independent of the nuclear genome
C. Mitochondria contian their own ribosomes which are sensitive to antibiotics that target
bacterial ribosomes
D. Mitochondria have a nucleus where transcription and translation are coupled
E. Mitochondria are similar in size to prokaryotic cells - ** VERIFIED ANSWERS **✔✔D.
Mitochondria have a nucleus where transcription and translation are coupled
The first person to visualize individual microbial cells using a high-powered magnifying
glass was ____________.
A. Antonie van Leeuwenhoek
B. Robert Hooke
C. Louis Pasteur
D. Lady Montagu
E. Edward Jenner - ** VERIFIED ANSWERS **✔✔A. Antonie van Leeuwenhoek
Cholesterol dependent cytolysins are toxins secreted by certain bacterial species. These
toxins require cholesterol in the membrane for action, would they act on bacterial
membranes?
A. Yes, they would act on all types of bacteria.
B. No, they would only target eukaryotic cell membranes.
C. They would only act on gram-negative bacteria.
D. They would only act on gram-positive bacteria. - ** VERIFIED ANSWERS **✔✔B. No,
they would only target eukaryotic cell membranes
,Oxygen is transported across the membrane via________.
A. Primary active transport
B. Secondary active transport
C. Simple diffusion
D. Facilitated diffusion
E. Group translocation - ** VERIFIED ANSWERS **✔✔C. Simple diffusion
Gram-positive cell envelopes do NOT include which of the following?
A. Teichoic acids
B. Lipoteichoic acids
C. Thick layers of peptidoglycan
D. Plasma membranes
E. Lipopolysaccharides (LPS - ** VERIFIED ANSWERS **✔✔E. Lipopolysaccharides (LPS)
The structure shown in the image is found in the _________ of bacteria. The larger
molecules (NAG, NAM) are connected together by the _______ cross-linker shown at the
arrow.
A. Cell wall; sugar
B. Cell membrane; peptide
C. Cell membrane; sugar
D. Cell wall; peptide
E. Capsule, sugar - ** VERIFIED ANSWERS **✔✔D. Cell wall; peptide
Which component is found in gram-negative but not gram-positive bacteria?
A. Lipoteichoic acids (LTA)
B. Lipopolysaccharide (LPS)
, C. Periplasmic space
D. Outer membrane
E. Three of the above are found in gram-negative but not gram-positive bacteria
F. Two of the above are found in gram-negative but not gram-positive bacteria. - **
VERIFIED ANSWERS **✔✔F. Two of the above are found in gram-negative but not gram-
positive bacteria
The halo region surrounding the bacterium in this slide is a ______ and is composed of
______.
A. Capsule; proteins
B. Nucleoid; DNA
C. Outer membrane; phospholipids
D. Capsule; carbohydrates
E. S Layer; LPS - ** VERIFIED ANSWERS **✔✔D. Capsule; Carbohydrates
Which of the following statements about the bacterial flagella is INCORRECT?
A. Some flagella components are anchored in the layers of the cell envelope.
B. Flagella can be observed using an electron microscope.
C. Flagella can rotate clockwise or counter clockwise.
D. Flagella are used for chemotaxis towards or away from a substance.
E. Flagella are found on all bacteria types during some point in their life cycle. - **
VERIFIED ANSWERS **✔✔E. Flagella are found on all bacteria types during some point in
theri life cycle
Which of the following statements about bacterial endospores is TRUE?
A. Most bacterial species can form endospores.
B. Endospore formation is triggered by lack of nutrients in the environment.
C. Endospores are resistant to heat but sensitive to UV irradiation.
