k8Chapter81:8An8Invisible8World
Chapter81:8An8Invisible8World
*8=8Correct8answer8M
ultiple8Choice
1. Which8of8the8following8is8true8of8the8microbial8world?
A. All8microbes8are8harmful.
B. Humans8could8survive8without8microbes.
C. Many8microbes8are8helpful.*
D. Most8microbes8are8pathogenic.
Difficulty:8Easy
ASM8Standard:823,824
2. Which8of8the8following8is8when8humans8first8suspected8the8existence8of8microbes?
A. during8the8Industrial8Revolution
B. in8prehistoric8times*
C. in8the8last8century
D. within8the8last85008years
Difficulty:8Easy8AS
M8Standard:823
3. Which8individual8first8observed8unicellular8organisms,8which8he8called8“animalcules,”8usi
ng8a8microscope8he8developed?
A. Robert8Koch
B. Louis8Pasteur
C. Thucydides
D. Antonie8van8Leeuwenhoek*
Difficulty:8Easy8AS
M8Standard:86
4. To8reduce8the8risk8of8open8flame8from8Bunsen8burners,8microbiologists8are8increasingly8usi
ng8which8of8the8following8devices8for8easy,8rapid8benchtop8sterilization8of8small8pieces8of8
equipment?
A. autoclaves
B. ethylene8oxide
C. incubators
D. microincinerators*
Difficulty:8Easy8AS
M8Standard:836
Page818of817
,OpenStax8Microbiology8Test8Ban
k8Chapter81:8An8Invisible8World
5. The8Swedish8botanist8known8for8having8developed8an8important8biological8classificati
on8system8is8which8of8the8following8people?
A. Ernst8Haeckel
B. Carolus8Linnaeus*
C. Louis8Pasteur
D. Robert8Whittaker
Difficulty:8Easy8AS
M8Standard:8N/A
6. Which8kingdom8was8the8only8one8found8in8Empire8Prokaryota?
A. Animalia
B. Fungi
C. Monera*
D. Protista
Difficulty:8Easy8AS
M8Standard:8N/A
7. Which8are8the8three8currently8accepted8domains?
A. Archaea,8Bacteria,8and8Eukarya*
B. Archaea,8Prokaryota,8and8Eukaryota
C. Bacteria,8Fungi,8and8Protista
D. Bacteria,8Prokaryota,8and8Eukarya
Difficulty:8Easy8AS
M8Standard:8N/A
8. Which8two8taxonomic8units8are8typically8used8to8identify8an8organism8when8using8binom
ial8nomenclature?
A. domain8and8kingdom
B. genus8and8family
C. genus8and8species*
D. phylum8and8class
Difficulty:8Easy8AS
M8Standard:8N/A
9. Which8of8the8following8is8not8true8about8the8process8of8fermentation?
A. It8can8help8preserve8foods,8preventing8spoilage.
B. It8converts8sugars8to8organic8acids,8alcohols,8and/or8gases8such8as8carbon8dioxide.
C. It8is8carried8out8exclusively8by8unicellular8eukaryotes8such8as8yeast.*
D. It8is8used8to8make8foods8such8as8cheese8and8bread.
Difficulty:8Moderate8AS
M8Standard:811,823,826
Page828of817
,OpenStax8Microbiology8Test8Ban
k8Chapter81:8An8Invisible8World
10. The8Romans8may8have8reduced8their8risk8of8waterborne8infectious8diseases8by8using8which
8of8the8following?
A. a8variety8of8pharmaceutical8products
B. aqueducts8and8a8sewer8system*
C. prophylactic8antibiotics
D. quarantine8of8people8with8leprosy
Difficulty:8Moderate
8ASM8Standard:823
11. For8which8of8the8following8is8Thucydides8known?
A. developing8an8effective8sewer8system8in8ancient8Greece,8helping8to8reduce8levels8
of8disease8in8cities
B. observing8microbes,8using8a8microscope,8for8the8first8time,8even8distinguishing8betwe
en8bacteria8and8fungi
C. proposing8that8disease8was8caused8by8microorganisms
D. realizing8that8people8who8had8been8infected8by8the8Athenian8plague8had8immunity
8to8reinfection*
Difficulty:8Moderate8A
SM8Standard:823,831
12. Ernst8Haeckel8proposed8a8classification8system8consisting8of8which8of8the8followi
ng8subgroups?
A. five8kingdoms
B. four8kingdoms*
C. two8domains8and8three8kingdoms
D. two8domains8and8five8kingdoms
Difficulty:8Moderate
8ASM8Standard:8N/
A
13. Viruses8not8included8in8phylogenetic8trees8for8which8of8the8following8reasons?
A. It8is8too8difficult8to8observe8their8characteristics.
B. They8are8acellular8and8nonliving.*
C. They8do8not8have8any8genes,8which8prevents8genetic8analysis.
D. They8lack8a8nucleus.
Difficulty:8Moderate
8ASM8Standard:85
14. Which8is8the8best8description8of8the8primary8purpose8of8a8phylogeny?
A. Phylogenies8show8all8the8alterative8names8for8each8species.
B. Phylogenies8show8all8the8common8names8for8each8species.
C. Phylogenies8show8evolutionary8relatedness8between8organisms.*
Page838of817
, OpenStax8Microbiology8Test8Ban
k8Chapter81:8An8Invisible8World
D. Phylogenies8show8interactions8between8species8in8a8shared8habitat.
Difficulty:8Moderate
8ASM8Standard:85
15. Current8phylogenetic8analyses8include8which8of8the8following?
A. information8from8a8range8of8sources,8including8morphological,8genetic,8and8biochemic
al8data*
B. information8on8visible8similarities8only
C. information8regarding8how8to8classify8organisms8on8the8basis8of8external8morphologi
cal8characteristics8and8visible8behaviors
D. varied8morphological8and8structural8characteristics,8with8preference8for8leaving8historic
al8classifications8to8prevent8confusion
Difficulty:8Moderate
8ASM8Standard:85
16. Diatoms8are8classified8within8which8of8the8following8domains?
A. Archaea
B. Bacteria
C. Eukarya*
D. Prokaryota
Difficulty:8Moderate
8ASM8Standard:8N/
A
17. Horizontal8gene8transfer8involves8which8of8the8following?
A. any8transfer8of8genes8in8a8laboratory8setting
B. the8transfer8of8genes8from8a8virus8to8a8bacterium8or8vice8versa8but8not8any8other8for
m8of8gene8transfer
C. the8transfer8of8genes8from8one8individual8to8another,8including8from8one8species
8to8another,8but8not8from8parent8to8offspring*
D. the8transfer8of8genes8from8parent8to8offspring
Difficulty:8Moderate
8ASM8Standard:82,8
4
18. Bacteria8are8generally8identified8to8species8by8using8which8of8the8following?
A. a8combination8of8genetic,8biochemical,8and8microscopic8approaches*
B. a8combination8of8microscopic8and8physiological8approaches,8but8not8genetics
C. primarily8characteristics8such8as8motility8that8can8be8visualized8using8microscopy
D. primarily8morphological8characteristics8of8individual8cells
Difficulty:8Moderate8A
SM8Standard:834,836
Page848of817