Download Chapter 27 - Blue Valley Schools

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Chapter 27 Review
_____ 1 Spiral-shaped bacteria are likely to be placed with
A
B
C
D
chlamydias.
spirochetes.
cyanobacteria.
proteobacteria.
_____ 2 The DNA-containing region of this bacterial cell is indicated by the
letter ___ and is called the ______.
A A ... nucleus
B B ... nucleic region
C C ... cytoplasm
D D ... nucleoid region
_____ 3 The structure that regulates the passage of material into and out of
this bacterial cell is indicated by the letter
A A.
B B.
C C.
D D.
E E.
_____ 4 ______ are surface appendages that allow a bacterium to stick to a surface and may be involved in DNA exchange.
A
B
C
D
Pili
Flagella
Cell walls
Ribosomes
_____ 5 Which of the following is the correct order, from most external to most internal?
A
B
C
D
cell wall, plasma membrane, capsule
cell wall, capsule, plasma membrane
capsule, plasma membrane, cell wall
capsule, cell wall, plasma membrane
_____ 6 What is the name of the genetic variation inducing
process shown here?
A mutation
B conjugation
C transduction
D transformation
_____ 7 In a bacterium, where are proteins synthesized?
A
B
C
D
nucleus
capsule
ribosomes
peroxisome
_____ 8 What name is given to the rigid structure, found outside the plasma membrane, that surrounds and supports the
bacterial cell?
A pili
B flagella
C cell wall
D peptidoglycan
_____ 9 Which of the following statements about all prokaryotes is TRUE?
A
B
C
D
They have histones associated with DNA.
They divide by binary fission, without mitosis or meiosis.
Their genetic material is confined within a nuclear envelope.
Genetic variation in prokaryotes is not known to occur, nor should it occur,
because of their asexual mode of reproduction.
_____ 10 The prokaryotic cells that were the first to add significant quantities of oxygen to Earth's
atmosphere are classified as
A chlamydias.
B spirochetes.
C cyanobacteria.
D proteobacteria.
_____ 11 According to this cladogram, which of these pairs of prokaryotic subgroups share the most recent common
ancestor?
A Euryarchaeotes - Cyanobacteria
B Proteobacteria - Crenarchaeotes
C Proteobacteria - Euryarchaeotes
D Euryarchaeotes - Crenarchaeotes
_____ 12 Photoautotrophs use
A
B
C
D
CO2 as both an energy source and a carbon source.
H2S as an energy source and CO2 as a carbon source.
light as an energy source and CO2 as a carbon source.
light as an energy source and methane as a carbon source.
_____ 13 Which prokaryotes should be expected to be most strongly resistant to plasmolysis in hypertonic environments?
A
B
C
D
methanogens
extreme halophiles
extreme thermophiles
nitrogen-fixing bacteria that live in root nodules
_____ 14 Bacteria perform the following ecological roles. Which role typically does not involve symbiosis?
A
B
C
D
pathogen
decomposer
gut mutualist
skin commensalist
_____ 15 Which of the following involves metabolic cooperation among prokaryotic cells?
A
B
C
D
biofilms
binary fission
photoautotrophy
endospore formation