Bio CH 19

Prokaryotes are unlike all other organisms in that their cells
A.  lack nuclei
B.  have cell walls
C.  have organelles
D.  lack nucleic acids

Archaebacteria that live in oxygen-free environment include
A.  protists
B.  retroviruses
C.  bacteriophages
D.  methanogens

Bacteria that contain chlorophyll a belong in the group
A.  cyanobacteria
B.  pathogens
C.  chemoautotrophs
D.  archaebacteria

Bacteria reproduce asexually by
A.  binary fission
B.  conjugation
C.  fixation
D.  spores

The process of converting nitrogen into a form plants can use is known as nitrogen
A.  sterilization
B.  decomposition
C.  conjugation
D.  fixation

Particles made up of nucleic acids, proteins, and in some cases, lipids that can reproduce only by infecting living cells are known as 
A.  bacteria
B.  prophages
C.  viruses
D.  capsids

The outer protein coat of a virus is a
A.  membrane envelope
B.  capsid
C.  core of DNA
D.  core of RNA

One group of viruses that contain RNA as their genetic information is 
A.  capsids
B.  oncogenic viruses
C.  retroviruses
D.  prophages

Disease-causing organisms are known as
A.  archaebacteria
B.  pathogens
C.  cocci
D.  bacilli

Type of parasite that attacks certain prokaryotes
A.  bacteriophage
B.  cocci
C.  methanogen
D.  conjugation
E.  binary fission

Process of transferring genetic information
A.  cocci
B.  bacteriophage
C.  conjugation
D.  methanogen
E.  binary fission

Spherical prokaryotes
A.  cocci
B.  methanogen
C.  conjugation
D.  bacteriophage
E.  binary fission

Process of asexual reproduction
A.  cocci
B.  binary fission
C.  methanogen
D.  bacteriophage
E.  conjugation

Member of archaea
A.  binary fission
B.  bacteriophage
C.  cocci
D.  conjugation
E.  methanogen

Which of the following is NOT used to identify specific prokaryotes?
A.  movement
B.  shape
C.  Gram stain
D.  energy source
E.  size

Which method is NOT used to protect food against microorganisms?
A.  sterilization
B.  salting
C.  boiling
D.  freezing
E.  vaccination

Which illness is caused by a bacterium?
A.  common cold
B.  AIDS
C.  flu
D.  diphtheria
E.  polio

Which process is used for the exchange of genetic information between two bacterial cells?
A.  conjugation
B.  lytic cycle
C.  lysogenic cycle
D.  binary fission
E.  immunization

All bacteria are classified as
A.  archaea
B.  blue-green algae
C.  prokaryotes
D.  eukaryotes
E.  protists

Which group includes some members that can carry out photosynthesis?
A.  both bacteria and viruses
B.  viruses but not bacteria
C.  bacteria but not viruses
D.  neither viruses nor bacteria

Important differences between archaebacteria and eubacteria include all of the following EXCEPT
A.  type of membrane lipids
B.  presence of capsid proteins
C.  nucleotide sequences of DNA
D.  presences of peptidoglycan

Bacteria play an important role in ecosystems as
A.  decomposers
B.  producers and decomposers
C.  parasites
D.  producers