Question 1

Bacteria typically use binary fission, but under special circumstances sexual reproduction is possible via horizontal gene transfer.

Accepted Answer

A) True 
 B)False

Question 2

Prokaryotes undergo a process that produces cells that are identical.This process is called

Accepted Answer

A) mitosis. 
B) meiosis. 
C) conjugation. 
D) binary fission. 
A) mitosis. 
B) meiosis. 
C) conjugation. 
D) binary fission.

Question 3

Early classification systems of the bacteria employed all of the following characteristics except

Accepted Answer

A) the ability to photosynthesize. 
B) rRNA sequences. 
C) motility. 
D) colony or filament forming. 
A) the ability to photosynthesize. 
B) rRNA sequences. 
C) motility. 
D) colony or filament forming.

Question 4

Which of the following events is least likely to result in a genetic change in a bacterium?

Accepted Answer

A) pilus formation 
B) conjugation 
C) specialized transduction 
D) generalized transduction 
A) pilus formation 
B) conjugation 
C) specialized transduction 
D) generalized transduction

Question 5

The enzymes for cellular respiration in eukaryotic organisms are located within the mitochondria.In prokaryotic organisms, these enzymes are attached to the

Accepted Answer

A) cell wall. 
B) cell membrane. 
C) ribosomes. 
D) circular DNA. 
A) cell wall. 
B) cell membrane. 
C) ribosomes. 
D) circular DNA.

Question 6

Members of the genus ______________ are associated with scarlet fever, rheumatic fever, pneumonia, etc.

Accepted Answer

The answer of Members of the genus ______________ are associated...

Question 7

Certain prokaryotes can withstand drying and hotter temperatures because of their ability to form

Accepted Answer

A) cell walls. 
B) endospores. 
C) flagella. 
D) organelles. 
A) cell walls. 
B) endospores. 
C) flagella. 
D) organelles.

Question 8

Which of the following statements about sexually transmitted diseases (STDs) is false?

Accepted Answer

A) Gonorrhea, syphilis, and chlamydia are all transmitted through sexual contact. 
B) Because chlamydia has both bacterial and viral characteristics, it cannot be treated with antibiotics. 
C) Chlamydia is known as the "silent STD." 
D) The incidence of chlamydia has increased as gonorrhea has decreased. 
A) Gonorrhea, syphilis, and chlamydia are all transmitted through sexual contact. 
B) Because chlamydia has both bacterial and viral characteristics, it cannot be treated with antibiotics. 
C) Chlamydia is known as the "silent STD." 
D) The incidence of chlamydia has increased as gonorrhea has decreased.

Question 9

Vibrio cholerae produces a toxin that destroys the intestinal epithelium.This leads to massive diarrhea; the diarrhea can kill the human via dehydration but helps the bacteria spread and colonize other humans.What is this relationship?

Accepted Answer

A) Mutualistic 
B) Commensalistic 
C) Symbiotic 
D) Atavistic 
A) Mutualistic 
B) Commensalistic 
C) Symbiotic 
D) Atavistic

Question 10

If left untreated, syphilis infections go through four stages.The first stage is a sore called a chancre.The signs of the second stage are

Accepted Answer

A) some nerve damage, loss of some teeth, and perhaps a dimming of color vision. 
B) very few, with many victims having no symptoms. 
C) rash, sore throat, and sores in the mouth 
D) persistence of the chancre and bleeding at the chancre site. 
A) some nerve damage, loss of some teeth, and perhaps a dimming of color vision. 
B) very few, with many victims having no symptoms. 
C) rash, sore throat, and sores in the mouth 
D) persistence of the chancre and bleeding at the chancre site.

Question 11

Genetic engineering technology is being applied to use bacteria in all of the following areas except

Accepted Answer

A) antibiotic production. 
B) bioremediation. 
C) making human proteins. 
D) specialized transduction. 
A) antibiotic production. 
B) bioremediation. 
C) making human proteins. 
D) specialized transduction.

Question 12

DNA replication and gene expression in archaeans more closely resemble eukaryotic cells than the same processes in bacteria.However both Bacteria and Archaea are prokaryotic.What does this suggest?

Accepted Answer

A) Eukaryotic cells are descended from modern Archaeans. 
B) Bacterial cells are not related to Archaeans. 
C) Eukaryotic cells shared a more recent common ancestor with Archaeans than with bacterial cells. 
D) There must have been 2 origin events, one producing the bacteria and the other producing Archaeans and eukaryotic cells. 
A) Eukaryotic cells are descended from modern Archaeans. 
B) Bacterial cells are not related to Archaeans. 
C) Eukaryotic cells shared a more recent common ancestor with Archaeans than with bacterial cells. 
D) There must have been 2 origin events, one producing the bacteria and the other producing Archaeans and eukaryotic cells.

Exam 28: Prokaryotes

Bacteria typically use binary fission, but under special circumstances sexual reproduction is possible via horizontal gene transfer.

Prokaryotes undergo a process that produces cells that are identical.This process is called

Early classification systems of the bacteria employed all of the following characteristics except

Which of the following events is least likely to result in a genetic change in a bacterium?

The enzymes for cellular respiration in eukaryotic organisms are located within the mitochondria.In prokaryotic organisms, these enzymes are attached to the

Members of the genus ______________ are associated with scarlet fever, rheumatic fever, pneumonia, etc.

Certain prokaryotes can withstand drying and hotter temperatures because of their ability to form

Which of the following statements about sexually transmitted diseases (STDs) is false?

Vibrio cholerae produces a toxin that destroys the intestinal epithelium.This leads to massive diarrhea; the diarrhea can kill the human via dehydration but helps the bacteria spread and colonize other humans.What is this relationship?

If left untreated, syphilis infections go through four stages.The first stage is a sore called a chancre.The signs of the second stage are

Genetic engineering technology is being applied to use bacteria in all of the following areas except

DNA replication and gene expression in archaeans more closely resemble eukaryotic cells than the same processes in bacteria.However both Bacteria and Archaea are prokaryotic.What does this suggest?

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