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Bacteria Test
Test Description: This review game set covers ALCOSO #9
Instructions: Answer all questions to get your test result.
1) Bacteria live in a variety of locations one of which is the human mouth. Which explanation supports the wide variety of bacteria in the mouth?
A
Accessibility to air cause bacteria to change form.
B
Accessibility to nutrients makes the mouth a favorable habitat.
C
Calcium in the teeth provides appropriate pH levels in the mouth.
D
Salivary glands cause mutations in populations of bacteria.
2) Bacteria can thrive in many environments including hostile environments like hot springs, polar ice caps and salt flats. This is due to the __________ of bacteria.
A
small sizes
B
varied shapes
C
means of movement
D
biochemical diversity
3) Some bacteria, like those that cause Cholera, have a flagellum that allows them to
A
move.
B
reproduce.
C
produce sugar.
D
excrete water.
4) What are bacterial chromosomes made up of?
A
DNA or RNA in various forms
B
linear pieces of DNA
C
DNA paired in chromosomes
D
single circular piece of DNA
5) Archaea are different from bacteria in that Archaea
A
have molecules that are different from eukaryotic molecules.
B
have structures and molecules that are more similar to eukaryotes than bacteria.
C
have structures that are more similar to bacterial structures.
D
developed before bacteria.
6) One way bacteria are important to the Earth and its ecosystems is that
A
bacteria produce acetone.
B
bacteria decompose dead organisms.
C
bacteria concentrate valuable minerals.
D
bacteria use oxygen.
7) Prokaryotes are different from all other organisms in that their cells
A
have organelles.
B
lack nuclei.
C
lack DNA.
D
have cell walls.
8) Bacteria that use chemicals, like sulfur, as an energy source are considered
A
saprobes.
B
heterotrophs.
C
photoautotrophs.
D
chemoautotrophs.
9) Which of the following is considered a sexual process for exchanging genetic information but is not considered reproduction?
A
transcription
B
conjugation
C
translation
D
binary fission
10) Which of these is an example of how bacteria are beneficial?
A
break down cellulose in some animals' digestive systems
B
can survive in hot, acidic environments
C
reproduce sexually through conjugation
D
produce billions of offspring per day
11) Environmental spills of petroleum are sometimes cleaned up by using
A
protists.
B
bacteria.
C
bacteriophages.
D
viruses.
12) Which of the following comparisons is incorrect?
A
Prokaryotes: no cell nucleus, Eukaryotes: cell nucleus
B
Prokaryotes: most require oxygen, Eukaryotes: most do not require oxygen
C
Prokaryotes: smaller, Eukaryotes: larger
D
Prokaryotes: circular DNA, Eukaryotes: linear DNA
13) All bacteria are classified as
A
Protista.
B
Prokaryotes.
C
Archaea.
D
Eukaryotes.
14) Bacteria cause diseases by
A
both (B) and (C).
B
destroying tissues.
C
reducing wrinkles.
D
producing toxins.
15) Bacteria that use sunlight as an energy source are considered
A
heterotrophs
B
chemoautotrophs
C
photoautotrophs
D
saprobes
*select an answer for all questions
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