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MULTIPLE CHOICE
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1. Which of the following is NOT considered a benefit of microorganisms?
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a. nitrogen fixation fk c. synthesis of vitamins 1a fk
b. production of fermented foods d. causative agents ofdisease
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ANS: D f k DIF: Easy REF: 1.1 fk
OBJ: 1.1a Describe how we define a microbe, and explain why the definition is a challenge.MS
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C: Reme
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mbering
2. A microbe that is 50 nm in size would most likely be
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a. fungi. c. virus.
b. E. coli. fk d. algae.
ANS: C f k DIF: Moderate REF: 1.1
OBJ: 1.1b Describe the three major domains of life: Archaea, Bacteria, and Eukarya. Explain whatth
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e thre e domains have in comm fk fk fk fk fk fk
on and how they differ.
fk fk fk MSC: Applying
fk fk
3. Based on the figure shown, the type of organism indicated with an arrowcould be a
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a. virus. c. macroscopic fungi. 1a
b. bacteria. d. largeameba.
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ANS: B f k DIF: Easy REF: 1.1 fk
OBJ: 1.1b Describe the three major domains of life: Archaea, Bacteria, and Eukarya. Explain whatth
fk fk fk fk 1a fk fk fk fk fk fk fk fk fk
e thre e domains have in comm fk fk fk fk fk fk
on and how they differ.
fk fk fk MSC: Applying
fk fk
4. Based on the figure, the type of organism shown is a(n)
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, a. virus. c. archaea.
b. bacteria. d. eukaryote.
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ANS: D f k DIF: Moderate REF: 1.1 fk
OBJ: 1.1b Describe the three major domains of life: Archaea, Bacteria, and Eukarya. Explain whatth
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e thre e domains have in comm fk fk fk fk fk fk
on and how they differ.
fk fk fk MSC: Applying
fk fk
5. Which of the following demonstrates correct scientific notation of a bacterial organism?
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a. Staphylococcus Epidermidis c. Staphylococcus epidermidis fk f k
b. Staphylococcus epidermidis d. Staphylococcus Epidermidis fk fk
ANS: C f k DIF: Easy REF: 1.1 fk
OBJ: 1.1b Describe the three major domains of life: Archaea, Bacteria, and Eukarya. Explain whatth
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e thre e domains have in comm fk fk fk fk fk fk
on and how they differ.
fk fk fk MSC: Applying
fk fk
6. Which key characteristic differentiates a prokaryote from a eukaryote?
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a. the absence of proteinsfk fk fk
b. the presence of DNA fk fk fk
c. the absence of membrane-bound organelles
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d. the presence of a cell wall
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ANS: C f k DIF: Easy REF: 1.1 fk
OBJ: 1.1b Describe the three major domains of life: Archaea, Bacteria, and Eukarya. Explain whatth
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e thre e domains have in com fk fk fk fk fk fk
mon and how they differ.
fk fk fk MSC: Remembering fk fk
7. Which of the following methods for classifying life forms can best be used to distinguish between twoc
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lose
f
ly related rod-shaped bacterial organisms, Salmonella typhimurium and Escherichia coli?
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a. physical characteristics c. DNA sequence comparison
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b. method of reproduction fkd. environmental habitat
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ANS: C f k DIF: Moderate REF: 1.1 fk
OBJ: 1.1b Describe the three major domains of life: Archaea, Bacteria, and Eukarya. Explain whatth
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e thre e domains have in comm fk fk fk fk fk fk
on and how they differ.
fk fk fk MSC: Applying
fk fk
8. Which of the following is always classified as a eukaryote?
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a. papillomavirus c. Escherichia coli f k
b. methanogen d. yeast
ANS: D fk DIF: Moderate REF: 1.1
, OBJ: 1.1b Describe the three major domains of life: Archaea, Bacteria, and Eukarya. Explain whatth
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e thr ee domains have in co fk fk fk fk fk fk
mmon and how they differ.
fk fk MSC: Understanding
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9. Which of the following has been usedas a tool for gene therapy?
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a. viruses c. protozoa
b. archaea d. fungi f k
ANS: A f k DIF: Easy REF: 1.1 fk
OBJ: 1.1b Describe the three major domains of life: Archaea, Bacteria, and Eukarya. Explain whatth
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e thre e domains have in com fk fk fk fk fk fk
mon and how they differ.
fk fk fk MSC: Understanding fk fk
10. Which of the following would you not expect to find in the human digestive tract?
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a. archaea c. bacteria
b. algae d. intestinal viruses f k fk
ANS: B f k DIF: Moderate REF: 1.1 fk
OBJ: 1.1b Describe the three major domains of life: Archaea, Bacteria, and Eukarya. Explain whatth
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e thr ee domains have in co fk fk fk fk fk fk
mmon and how they differ.
fk fk MSC: Understanding
fk fk fk
11. Antibiotics are chemotherapeutic drugs that function by inhibiting an important cellular structure or p rocess of a n
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organism that is causing an infection. Which of the following would not be affected byan antibiotic that targe ts c
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ellular metabolic enzymes?
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a. Streptococcus pyogenes bacteria c. ameba f k f k
b. Herpes virus fk d. bread mold f k fk
ANS: B f k DIF: Moderate REF: 1.1 fk
OBJ: 1.1c Define viruses, and explain howthey relateto living cells.MS C: Anal y
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zing
12. Which scientist is credited with constructing the first microscope?
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a. Antonie van Leeuwenhoek fk c. Robert Hooke
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b. Catherine ofSiena d. Louis Pasteur
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ANS: C f k DIF: Easy REF: 1.2 fk
OBJ: 1.2a Explain how microbial diseases have changed human history. MSC: R
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emembering
13. Which of the following was an unexpected benefit ofthe bubonic plague?
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a. There was no benefit to the bubonic plague.
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b. The population of Europe experienced a baby boom.
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c. It resulted in a better understanding of aseptic practices and how to prevent the spread ofi
1a fk fk fk fk fk fk fk fk fk fk fk 1a fk fk nfection.
d. The population decline enabled the cultural advancement of the Renaissance.
1a fk fk fk fk fk fk fk fk
ANS: D f k DIF: Easy REF: 1.2 fk
OBJ: 1.2a Explain how microbial diseases have changed human history. MSC:
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Understanding
14. Which of the following organisms would you NOT be able to see using Robert Hooke’s microscope?
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a. vinegar eels fk c. mold filaments fk
b. dust mites fk d. Mycobacterium tuberculosis f k
ANS: D fk DIF: Moderate REF: 1.2