Question 1

Which one of the following is not a characteristic of all prokaryotes?

Accepted Answer

A)  found in every habitat
B)  metabolically versatile
C)  first cells on Earth
D)  unicellular
E)  cell walls constructed of peptidoglycan

Question 2

Genetic diversity in bacteria is created by mutation and ___________.

Accepted Answer

The answer of Genetic diversity in bacteria is created by...

Question 3

Choose letter of the best match from the following:
-Transfer of nucleic acid from cell to cell via an F pilus.

Accepted Answer

A)  conjugation
B)  plasmid
C)  transduction (generalized) 
D)  transduction (specialized) 
E)  transformation (artificial) F) transformation (natural)

Question 4

In some bacteria,a capsule surrounds the cell wall.It is made up of

Accepted Answer

A)  a lipopolysaccharide.
B)  peptidoglycan.
C)  gelatin.
D)  pili.
E)  glycoprotein.

Question 5

Archaea differ from Bacteria in all of the following except

Accepted Answer

A)  cell wall composition.
B)  plasma membrane make up.
C)  DNA replication.
D)  gene expression.
E)  the presence of a nucleoid region.

Question 6

Which of the following differences between Archaebacteria and Bacteria is correct?

Accepted Answer

A)  Archaebacteria have peptidoglycans in their cell walls.Bacteria do not have peptidoglycans in their cell walls.
B)  Archaebacteria and Bacteria have different lipids in their bilipid layer of the plasma membranes.
C)  Archaebacteria and Bacteria have ribosomal proteins and an RNA polymerase that are distinctly different from eukaryotes,however bacteria ribosomal proteins are different from eukaryotes,while Archaebacteria ribosomal proteins are very similar.
D)  Genes of most Archaebacteria are not interrupted by introns,whereas intorns interrupt bacteria genes.

Question 7

You expose a tube of bacteria to ultraviolet radiation to induce mutations.You then spread the bacteria on a plate containing minimal media and wait until separate colonies form.Finally,you use replicate plating to transfer a print of this plate to an additional sterile plate containing minimal media plus a known required nutrient for the bacteria.Based on this protocol,colonies growing on the plate lacking a required nutrient would include what type of cells?

Accepted Answer

A)  only wild-type bacteria
B)  only bacteria mutant for the supplied nutrient
C)  only mutant bacteria but not those mutant for the supplied nutrient
D)  wild-type bacteria and bacteria mutant for the supplied nutrient
E)  wild-type bacteria and all mutant bacteria except those mutant for the supplied nutrient

Question 8

Which of the following is not a shape seen in prokaryotes?

Accepted Answer

A)  cocci
B)  bacilli
C)  spirals
D)  helicals
E)  icosahedrals

Question 9

Prokaryotes that harvest both energy and carbon atoms from organic molecules are called

Accepted Answer

A)  photoautotrophs.
B)  chemoautotrophs.
C)  photoheterotrophs.
D)  chemoheterotrophs.
E)  nitrogen fixers.

Question 10

The data below shows recombination of genes (1-5) according to the amount of time available for transfer of the bacterial chromosome during conjugation between different genetic strains in E coli? Based on these data,which gene is closest to gene 1? (Note: The entire chromosome is transferred in 100 minutes. )

Accepted Answer

A)  gene 2
B)  gene 3
C)  gene 4
D)  gene 5

Question 11

The earliest fossilized forms of microscopic life,known as ___________,were prokaryotes.

Accepted Answer

The answer of The earliest fossilized forms of microscopic life,known...

Question 12

Current classification of prokaryotes is based on

Accepted Answer

A)  morphology of flagellA.
B)  sequencing of proteins,DNA,and RNA.
C)  occurrence of transverse binary fission.
D)  type of colony formation.
E)  ability to stain the cell wall with Gram stain.

Question 13

In addition to viruses,such as HIV,a number of species of bacteria also cause sexually transmitted diseases or _______________.

Accepted Answer

The answer of In addition to viruses,such as HIV,a number...

Question 14

Choose letter of the best match from the following:
-Gene transfer achieved in the laboratory.

Accepted Answer

A)  conjugation
B)  plasmid
C)  transduction (generalized) 
D)  transduction (specialized) 
E)  transformation (artificial) F) transformation (natural)

Question 15

Prokaryotic cell walls consist of a network of polysaccharide molecules connected by cross-links of

Accepted Answer

A)  other polysaccharides.
B)  lipids.
C)  polypeptides.
D)  ribosomes.
E)  chromosomal DNA.

Question 16

Dental plaque (a biofilm) ,a first stage in tooth decay,consists of

Accepted Answer

A)  sugars.
B)  bacteria surrounded by a polysaccharide matrix.
C)  fluoride.
D)  lactic aciD.
E)  bacteria and high pH.

Question 17

Which of the following statements about generalized transduction is false?

Accepted Answer

A)  "Headfull" packaging always places only phage DNA into the phage head during phage packaging in generalized transduction.
B)  Generalized transduction always involves lytic phage.
C)  Generalized transduction can be used to map bacterial genes.
D)  Genes that are close together on the bacterial chromosome will have a relatively large cotransduction frequency.
E)  Two recombination events are necessary to integrate the transferred DNA during generalized transduction.

Question 18

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.
E)  Syphilis can be transmitted to fetus.

Question 19

Most bacteria that cause plant diseases are members of the group of rod-shaped bacteria known as _________________.

Accepted Answer

The answer of Most bacteria that cause plant diseases are...

Question 20

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

Accepted Answer

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

Exam 28: Prokaryotes

Archaea differ from Bacteria in all of the following except

Correct Answer
verified

In addition to viruses,such as HIV,a number of species of bacteria also cause sexually transmitted diseases or _______________.

Correct Answer
verified

Prokaryotes that harvest both energy and carbon atoms from organic molecules are called

Correct Answer
verified

Dental plaque (a biofilm) ,a first stage in tooth decay,consists of

Correct Answer
verified

Correct Answer
verified

In some bacteria,a capsule surrounds the cell wall.It is made up of

Correct Answer
verified

Correct Answer
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Which of the following differences between Archaebacteria and Bacteria is correct?

Correct Answer
verified

Genetic diversity in bacteria is created by mutation and ___________.

Correct Answer
verified

Which of the following is not a shape seen in prokaryotes?

Correct Answer
verified

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

Correct Answer
verified

Most bacteria that cause plant diseases are members of the group of rod-shaped bacteria known as _________________.

Correct Answer
verified

Prokaryotic cell walls consist of a network of polysaccharide molecules connected by cross-links of

Correct Answer
verified

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

Correct Answer
verified

The earliest fossilized forms of microscopic life,known as ___________,were prokaryotes.

Correct Answer
verified

Choose letter of the best match from the following: -Gene transfer achieved in the laboratory.

Correct Answer
verified

Current classification of prokaryotes is based on

Correct Answer
verified

Which one of the following is not a characteristic of all prokaryotes?

Correct Answer
verified

Choose letter of the best match from the following: -Transfer of nucleic acid from cell to cell via an F pilus.

Correct Answer
verified

Which of the following statements about generalized transduction is false?

Correct Answer
verified

Exam 28: Prokaryotes

Archaea differ from Bacteria in all of the following except

Correct AnswerverifiedShow Answer

In addition to viruses,such as HIV,a number of species of bacteria also cause sexually transmitted diseases or _______________.

Correct AnswerverifiedShow Answer

Prokaryotes that harvest both energy and carbon atoms from organic molecules are called

Correct AnswerverifiedShow Answer

Dental plaque (a biofilm) ,a first stage in tooth decay,consists of

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

In some bacteria,a capsule surrounds the cell wall.It is made up of

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which of the following differences between Archaebacteria and Bacteria is correct?

Correct AnswerverifiedShow Answer

Genetic diversity in bacteria is created by mutation and ___________.

Correct AnswerverifiedShow Answer

Which of the following is not a shape seen in prokaryotes?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Most bacteria that cause plant diseases are members of the group of rod-shaped bacteria known as _________________.

Correct AnswerverifiedShow Answer

Prokaryotic cell walls consist of a network of polysaccharide molecules connected by cross-links of

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The earliest fossilized forms of microscopic life,known as ___________,were prokaryotes.

Correct AnswerverifiedShow Answer

Choose letter of the best match from the following: -Gene transfer achieved in the laboratory.

Correct AnswerverifiedShow Answer

Current classification of prokaryotes is based on

Correct AnswerverifiedShow Answer

Which one of the following is not a characteristic of all prokaryotes?

Correct AnswerverifiedShow Answer

Choose letter of the best match from the following: -Transfer of nucleic acid from cell to cell via an F pilus.

Correct AnswerverifiedShow Answer

Which of the following statements about generalized transduction is false?

Correct AnswerverifiedShow Answer

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