Question 1

Figure 10.1
 
-In Figure 10.1, species ʺc.ʺ is most closely related to which of the following?

Accepted Answer

A)  a 
B)  b 
C)  c 
D)  d 
E)  e

Question 2

Into which group would you place a multicellular heterotroph with chitin cell walls?

Accepted Answer

A)  Bacteria 
B)  Fungi 
C)  Plantae 
D)  Archaea 
E)  Animalia

Question 3

Which of the following criteria is most useful in determining whether two organisms are related?

Accepted Answer

A)  Both ferment lactose. 
B)  Both are motile. 
C)  Both are aerobic. 
D)  Both are gram-positive. 
E)  Each answer is equally important.

Question 4

What is the outstanding characteristic of the Kingdom Fungi?

Accepted Answer

A)  Members absorb dissolved inorganic matter. 
B)  Members absorb dissolved organic matter. 
C)  All members are microscopic. 
D)  All members are photosynthetic. 
E)  All members are macroscopic.

Question 5

One of the most popular taxonomic tools is DNA fingerprinting to develop profiles of organisms. These profiles provide direct information about

Accepted Answer

A)  antigenic composition. 
B)  protein composition. 
C)  the presence of specific genes. 
D)  the similarities between nucleotide sequences. 
E)  enzymatic activities.

Question 6

Western blotting is an immunological test used to identify the antibodies in the serum of an individual suspected of having Lyme disease.

Accepted Answer

A) True 
 B)False

Question 7

Into which group would you place a multicellular organism that has a mouth and lives inside the human liver?

Accepted Answer

A)  Fungi 
B)  Firmicutes (gram-positive bacteria) 
C)  Animalia 
D)  Proteobacteria (gram-negative bacteria) 
E)  Plantae

Question 8

Data collected to date indicate that

Accepted Answer

A)  marine mammals donʹt have an immune system. 
B)  marine mammals do not get infectious diseases. 
C)  new species of bacteria will not be discovered in wild animals. 
D)  humans and marine mammals cannot be infected by the same pathogens. 
E)  None of the answers is correct.

Question 9

A bacterial species differs from a species of eukaryotic organisms in that a bacterial species

Accepted Answer

A)  is a population of cells with similar characteristics. 
B)  breeds with its own species. 
C)  can be distinguished from other bacterial species. 
D)  does not breed with other species. 
E)  has a limited geographical distribution.

Question 10

Table 10.1
 $$\begin{array} { | l | l | } 
\hline \text { 1. } & 9 + 2 \text { flagella } \
\hline \text { 2. } & \text { Nucleus } \
\hline \text { 3. } & \text { Plasma membrane } \
\hline \text { 4. } & \text { Peptidoglycan } \
\hline \text { 5. } & \text { Mitochondrion } \
\hline \text { 6. } & \text { Fimbriae } \
\hline
\end{array}$$
-In Table 10.1, which features are found in nearly all eukarya?

Accepted Answer

A)  1, 2, 5 
B)  3, 5 
C)  2, 3, 5 
D)  1, 4, 6 
E)  2, 3

Question 11

You discovered a unicellular organism that lacks a nucleus and peptidoglycan. You suspect the organism is in the group

Accepted Answer

A)  Animalia. 
B)  Fungi. 
C)  Plantae. 
D)  Archaea. 
E)  Bacteria.

Question 12

Once a culture is purified, the next logical step in the process of identifying bacteria is biochemical testing.

Accepted Answer

A) True 
 B)False

Question 13

Which of the following statements about archaea is FALSE?

Accepted Answer

A)  They lack peptidoglycan in their cell walls. 
B)  Some produce methane from carbon dioxide and hydrogen. 
C)  Some are thermoacidophiles; others are extreme halophiles. 
D)  They are prokaryotes. 
E)  They evolved before bacteria.

Question 14

Organism A has 70 moles % G+C, and organism B has 40 moles % G+C. Which of the following can be concluded from these data?

Accepted Answer

A)  The two organisms are related. 
B)  Their nucleic acids will completely hybridize. 
C)  The two organisms are unrelated. 
D)  The organisms make entirely different enzymes. 
E)  None of the answers is correct.

Question 15

In the scientific name Enterobacter aerogenes, Enterobacter is the

Accepted Answer

A)  genus. 
B)  order. 
C)  kingdom. 
D)  family. 
E)  specific epithet.

Question 16

Which of the following statements about members of the Kingdom Plantae is FALSE?

Accepted Answer

A)  They synthesize organic molecules. 
B)  They use organic carbon sources. 
C)  They are multicellular. 
D)  They undergo photosynthesis. 
E)  They are composed of eukaryotic cells.

Question 17

Which of the following characterizes the Domain Bacteria?

Accepted Answer

A)  prokaryotic cells; ester linkages in phospholipids 
B)  prokaryotic cells; ether linkages in phospholipids 
C)  complex cellular structures 
D)  eukaryotic cells; ester linkages in phospholipids 
E)  multicellular

Question 18

Table 10.2
 I. Gram-positive
A. Catalase $+$
1. Acid from glucose........... Staphylococcus
2. Glucose.........................Micrococcus
B. Catalase-
1. Coccus.........................Streptococcus
2. Rod ..........................Lactobacillus
II. Gram-negative
A. Oxidase-
1. Acid from lactose
a. Uses citric acid..........................Citrobacter
b. Citric acid.................................Escherichia
2. Lactose-
a. $\mathrm { H } _ { 2 } \mathrm {~S}$ produced
(1) Urease positive............................Proteus
(2) Urease negative.............................. Salmonella
B. Oxidase $+$
1. Rod...........................Pseudomonas
2. Coccus....................... Neisseria
-Use the dichotomous key in Table 10.2 to identify a gram -negative cell that ferments lactose and uses citric acid as its sole carbon source.

Accepted Answer

A)  Escherichia 
B)  Citrobacter 
C)  Lactobacillus 
D)  Staphylococcus 
E)  Pseudomonas

Question 19

When building a cladogram, the length of the horizontal branch is based on the calculated percent similarity between organisms.

Accepted Answer

A) True 
 B)False

Question 20

Which of the following provides taxonomic information that includes the information obtained in the others listed?

Accepted Answer

A)  nucleic acid hybridization 
B)  nucleic acid-base composition 
C)  cladogram 
D)  biochemical tests 
E)  amino acid sequencing

Exam 10: Classification of Microorganisms

Figure 10.1 -In Figure 10.1, species ʺc.ʺ is most closely related to which of the following?

Into which group would you place a multicellular heterotroph with chitin cell walls?

Which of the following criteria is most useful in determining whether two organisms are related?

What is the outstanding characteristic of the Kingdom Fungi?

One of the most popular taxonomic tools is DNA fingerprinting to develop profiles of organisms. These profiles provide direct information about

Western blotting is an immunological test used to identify the antibodies in the serum of an individual suspected of having Lyme disease.

Into which group would you place a multicellular organism that has a mouth and lives inside the human liver?

Data collected to date indicate that

A bacterial species differs from a species of eukaryotic organisms in that a bacterial species

You discovered a unicellular organism that lacks a nucleus and peptidoglycan. You suspect the organism is in the group

Once a culture is purified, the next logical step in the process of identifying bacteria is biochemical testing.

Which of the following statements about archaea is FALSE?

Organism A has 70 moles % G+C, and organism B has 40 moles % G+C. Which of the following can be concluded from these data?

In the scientific name Enterobacter aerogenes, Enterobacter is the

Which of the following statements about members of the Kingdom Plantae is FALSE?

Which of the following characterizes the Domain Bacteria?

When building a cladogram, the length of the horizontal branch is based on the calculated percent similarity between organisms.

Which of the following provides taxonomic information that includes the information obtained in the others listed?