Question 1

Answer the question using the accompanying figure. Which number identifies the structure that carries supplemental genetic information? ​

Accepted Answer

A)  ​1
B)  ​2
C)  ​3
D)  ​4
E)  ​5F) A) and E)
G) C) and D)

Question 2

Chlamydias are bacteria that possess cell walls, but lack peptidoglycan .

Accepted Answer

A) True 
 B)False

Question 3

Answer the question using the accompanying figure. Which branch of this phylogenetic tree identifies Eukarya? ​

Accepted Answer

A)  ​A
B)  ​B
C)  ​C
D)  ​D
E)  ​EF) All of the above
G) None of the above

Question 4

Differentiate between endotoxins and exoenzymes.

Accepted Answer

Endotoxins are lipopolysaccharides released when a bacterium dies and lyses. These lipopolysaccharides cause disease. Exoenzymes are proteins released by some bacteria that can rupture host cells or digest extracellular materials such as collagen. ​

Question 5

Answer the question using the accompanying figure. Which number identifies the structure that carries out protein synthesis? ​

Accepted Answer

A)  2
B)  4
C)  5
D)  6
E)  9F) All of the above
G) A) and D)

Question 6

Genome sequence comparisons have now shown that the Korarchaeota are most likely a sister group of the Euryarchaeota.

Accepted Answer

A) True 
 B)False

Question 7

Which symptom indicates the presence of plaque in a dental patient? ​

Accepted Answer

A)  Presence of E. coli in the patient's mouth.
B)  A bacterial culture from a patient's mouth that appears pink after Gram staining.
C)  Presence of cyanobacteria in the patient's mouth.
D)  A bacterial culture from the patient's mouth that appears purple after Gram staining.
E)  Non-pathogenic biofilms in the patient's mouth.F) None of the above
G) B) and D) B

Question 8

The presence of a nuclear membrane is characteristic of ____. ​

Accepted Answer

A)  Archaea only
B)  Bacteria only
C)  both Archaea and Bacteria
D)  neither Archaea nor Bacteria
E)  Archaea, Bacteria and EukaryaF) B) and E)
G) A) and C)

Question 9

The correct sequence of reagents used in the Gram stain technique is ____. ​

Accepted Answer

A)  iodine, alcohol, safranin, and crystal violet
B)  safranin, crystal violet, alcohol, and iodine
C)  crystal violet, iodine, alcohol, and safranin
D)  crystal violet, alcohol, iodine, and safranin
E)  alcohol, iodine, crystal violet, and safraninF) B) and E)
G) D) and E)

Question 10

Match between columns
                        Premises: Bacillus

Accepted Answer

The Answer of causes gastric ulcers and aids in the is...

Question 11

How long does it take for a biofilm to form? ​

Accepted Answer

A)  seconds to minutes
B)  minutes to hours
C)  hours to days
D)  days to months
E)  months to yearsF) A) and B)
G) A) and C)

Question 12

Organisms that live optimally in cold temperatures are called barophiles .

Accepted Answer

A) True 
 B)False

Question 13

Prokaryotic cells generally reproduce by ____. ​

Accepted Answer

A)  mutation
B)  binary fission
C)  conjugation
D)  transduction
E)  transformationF) All of the above
G) C) and E)

Question 14

Match between columns
                        Premises: Neisseria

Accepted Answer

The Answer of produces CH₄ and causes anthrax and is...

Question 15

Dormant structures formed by certain bacteria in response to unfavorable environmental conditions are called ____. ​

Accepted Answer

A)  capsids
B)  endospores
C)  endotoxins
D)  exotoxins
E)  heterocystsF) D) and E)
G) None of the above

Question 16

The ____ use solar energy and organic molecules as their nutritional sources.

Accepted Answer

A)  chemoautotrophs
B)  chemoheterotrophs
C)  photoautotrophs
D)  photoheterotrophs
E)  ArchaeaF) A) and B)
G) C) and E)

Question 17

There are ____ major evolutionary groups in the domain Bacteria. ​

Accepted Answer

A)  ​2
B)  ​3
C)  ​4
D)  ​5
E)  at least 6F) A) and E)
G) B) and E)

Question 18

Figure 26.1  
Answer the question using the accompanying figure. Which type of cell is represented in this figure? ​

Accepted Answer

A)  a Gram-positive bacterium
B)  a Gram-negative bacterium
C)  either a Gram-positive or a Gram-negative bacterium
D)  an archaeal cell
E)  any prokaryotic cellF) All of the above
G) A) and E)

Question 19

Answer the question using the accompanying figure. Which number identifies a structure that is composed of polysaccharides? ​

Accepted Answer

A)  1
B)  3
C)  6
D)  7
E)  9F) B) and D)
G) A) and E) C

Question 20

The lipopolysaccharides are associated with the ____ membrane of Gram- ____ bacteria. ​

Accepted Answer

A)  outer; positive
B)  outer; negative
C)  plasma; positive
D)  plasma; negative
E)  plasma; positive and negativeF) C) and D)
G) None of the above

Exam 26: Prokaryotes and Viruses

Answer the question using the accompanying figure. Which number identifies the structure that carries supplemental genetic information?

Correct Answer
verified

Chlamydias are bacteria that possess cell walls, but lack peptidoglycan .

Correct Answer
verified

Answer the question using the accompanying figure. Which branch of this phylogenetic tree identifies Eukarya?

Correct Answer
verified

Differentiate between endotoxins and exoenzymes.

Correct Answer
verified
Endotoxins are lipopolysaccharides released when a bacterium dies and lyses. These lipopolysaccharides cause disease. Exoenzymes are proteins released by some bacteria that can rupture host cells or digest extracellular materials such as collagen.

Answer the question using the accompanying figure. Which number identifies the structure that carries out protein synthesis?

Correct Answer
verified

Genome sequence comparisons have now shown that the Korarchaeota are most likely a sister group of the Euryarchaeota.

Correct Answer
verified

Which symptom indicates the presence of plaque in a dental patient?

Correct Answer
verified
B

The presence of a nuclear membrane is characteristic of ____.

Correct Answer
verified

The correct sequence of reagents used in the Gram stain technique is ____.

Correct Answer
verified

Match each prokaryotic genus with its correct description.

How long does it take for a biofilm to form?

Correct Answer
verified

Organisms that live optimally in cold temperatures are called barophiles .

Correct Answer
verified

Prokaryotic cells generally reproduce by ____.

Correct Answer
verified

Match each prokaryotic genus with its correct description.

Dormant structures formed by certain bacteria in response to unfavorable environmental conditions are called ____.

Correct Answer
verified

The ____ use solar energy and organic molecules as their nutritional sources.

Correct Answer
verified

There are ____ major evolutionary groups in the domain Bacteria.

Correct Answer
verified

Figure 26.1 Answer the question using the accompanying figure. Which type of cell is represented in this figure?

Correct Answer
verified

Answer the question using the accompanying figure. Which number identifies a structure that is composed of polysaccharides?

Correct Answer
verified
C

The lipopolysaccharides are associated with the membrane of Gram- bacteria.

Correct Answer
verified

Exam 26: Prokaryotes and Viruses

Answer the question using the accompanying figure. Which number identifies the structure that carries supplemental genetic information? ​

Correct AnswerverifiedShow Answer

Chlamydias are bacteria that possess cell walls, but lack peptidoglycan .

Correct AnswerverifiedShow Answer

Answer the question using the accompanying figure. Which branch of this phylogenetic tree identifies Eukarya? ​

Correct AnswerverifiedShow Answer

Differentiate between endotoxins and exoenzymes.

Correct AnswerverifiedEndotoxins are lipopolysaccharides released when a bacterium dies and lyses. These lipopolysaccharides cause disease. Exoenzymes are proteins released by some bacteria that can rupture host cells or digest extracellular materials such as collagen. ​

Answer the question using the accompanying figure. Which number identifies the structure that carries out protein synthesis? ​

Correct AnswerverifiedShow Answer

Genome sequence comparisons have now shown that the Korarchaeota are most likely a sister group of the Euryarchaeota.

Correct AnswerverifiedShow Answer

Which symptom indicates the presence of plaque in a dental patient? ​

Correct AnswerverifiedB

The presence of a nuclear membrane is characteristic of ____. ​

Correct AnswerverifiedShow Answer

The correct sequence of reagents used in the Gram stain technique is ____. ​

Correct AnswerverifiedShow Answer

Match each prokaryotic genus with its correct description.

How long does it take for a biofilm to form? ​

Correct AnswerverifiedShow Answer

Organisms that live optimally in cold temperatures are called barophiles .

Correct AnswerverifiedShow Answer

Prokaryotic cells generally reproduce by ____. ​

Correct AnswerverifiedShow Answer

Match each prokaryotic genus with its correct description.

Dormant structures formed by certain bacteria in response to unfavorable environmental conditions are called ____. ​

Correct AnswerverifiedShow Answer

The ____ use solar energy and organic molecules as their nutritional sources.

Correct AnswerverifiedShow Answer

There are ____ major evolutionary groups in the domain Bacteria. ​

Correct AnswerverifiedShow Answer

Figure 26.1 Answer the question using the accompanying figure. Which type of cell is represented in this figure? ​

Correct AnswerverifiedShow Answer

Answer the question using the accompanying figure. Which number identifies a structure that is composed of polysaccharides? ​

Correct AnswerverifiedC

The lipopolysaccharides are associated with the ____ membrane of Gram- ____ bacteria. ​

Correct AnswerverifiedShow Answer

Answer the question using the accompanying figure. Which number identifies the structure that carries supplemental genetic information?

Correct Answer
verified

Correct Answer
verified

Answer the question using the accompanying figure. Which branch of this phylogenetic tree identifies Eukarya?

Correct Answer
verified

Correct Answer
verified
Endotoxins are lipopolysaccharides released when a bacterium dies and lyses. These lipopolysaccharides cause disease. Exoenzymes are proteins released by some bacteria that can rupture host cells or digest extracellular materials such as collagen.

Answer the question using the accompanying figure. Which number identifies the structure that carries out protein synthesis?

Correct Answer
verified

Correct Answer
verified

Which symptom indicates the presence of plaque in a dental patient?

Correct Answer
verified
B

The presence of a nuclear membrane is characteristic of ____.

Correct Answer
verified

The correct sequence of reagents used in the Gram stain technique is ____.

Correct Answer
verified

How long does it take for a biofilm to form?

Correct Answer
verified

Correct Answer
verified

Prokaryotic cells generally reproduce by ____.

Correct Answer
verified

Dormant structures formed by certain bacteria in response to unfavorable environmental conditions are called ____.

Correct Answer
verified

Correct Answer
verified

There are ____ major evolutionary groups in the domain Bacteria.

Correct Answer
verified

Figure 26.1 Answer the question using the accompanying figure. Which type of cell is represented in this figure?

Correct Answer
verified

Answer the question using the accompanying figure. Which number identifies a structure that is composed of polysaccharides?

Correct Answer
verified
C

The lipopolysaccharides are associated with the membrane of Gram- bacteria.

Correct Answer
verified