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,Chapter 01: Microbes Shape Our History
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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 hy c. synthesis of vitamins hy hy


b. production of fermented foods hy d. causative agents of disease
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ANS: D hy DIF: Easy REF: 1.1 hy


OBJ: 1.1a Describe how we define a microbe, and explain why the definition is a challenge.MS
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membering

2. A microbe that is 50 nm in size would most likely be
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a. fungi.
h y c. virus.
b. E. coli.
h y hy d. algae.
ANS: C hy 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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hree domains have in common and how they differ.
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3. Based on the figure shown, the type of organism indicated with an arrow could be a
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a. virus. c. macroscopic fungi. hy


b. bacteria. d. large ameba.
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ANS: B hy DIF: Easy REF: 1.1 hy


OBJ: 1.1b Describe the three major domains of life: Archaea, Bacteria, and Eukarya. Explain whatth
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hree domains have in common and how they differ.
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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 hy DIF: Moderate REF: 1.1 hy


OBJ: 1.1b Describe the three major domains of life: Archaea, Bacteria, and Eukarya. Explain whatth
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hree domains have in common and how they differ.
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5. Which of the following demonstrates correct scientific notation of a bacterial organism?
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a. Staphylococcus Epidermidis c. Staphylococcus epidermidis
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b. Staphylococcus epidermidis d. Staphylococcus Epidermidis
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ANS: C hy DIF: Easy REF: 1.1 hy


OBJ: 1.1b Describe the three major domains of life: Archaea, Bacteria, and Eukarya. Explain whatth
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hree domains have in common and how they differ.
hy hy hy MSC: Applying
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6. Which key characteristic differentiates a prokaryote from a eukaryote?
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a. the absence of proteins
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b. the presence of DNA
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c. the absence of membrane-bound organelles
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d. the presence of a cell wall
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ANS: C hy DIF: Easy REF: 1.1 hy


OBJ: 1.1b Describe the three major domains of life: Archaea, Bacteria, and Eukarya. Explain whatth
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hree domains have in common and how they differ.
hy hy hy MSC: Remembering
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7. Which of the following methods for classifying life forms can best be used to distinguish between twoc
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osely related rod-shaped bacterial organisms, Salmonella typhimurium and Escherichia coli?
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a. physical characteristics hy c. DNA sequence comparison hy hy


b. method of reproduction hy hy d. environmental habitat h y hy




ANS: C hy DIF: Moderate REF: 1.1 hy


OBJ: 1.1b Describe the three major domains of life: Archaea, Bacteria, and Eukarya. Explain whatth
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hree domains have in common and how they differ.
hy hy hy MSC: Applying
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8. Which of the following is always classified as a eukaryote?
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a. papillomavirus c. Escherichia coli hy


b. methanogen d. yeast

ANS: D hy DIF: Moderate REF: h y 1.1

, OBJ: 1.1b Describe the three major domains of life: Archaea, Bacteria, and Eukarya. Explain whatth
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hree domains have in common and how they differ.
hy hy MSC: Understanding
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9. Which of the following has been used as a tool for gene therapy?
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a. viruses c. protozoa
b. archaea d. fungi h y




ANS: A h y DIF: Easy REF: 1.1 hy


OBJ: 1.1b Describe the three major domains of life: Archaea, Bacteria, and Eukarya. Explain whatth
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hree domains have in common and how they differ.
hy hy MSC: Understanding
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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 h y hy




ANS: B hy DIF: Moderate REF: 1.1 hy


OBJ: 1.1b Describe the three major domains of life: Archaea, Bacteria, and Eukarya. Explain whatth
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hree domains have in common and how they differ.
hy hy MSC: Understanding
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11. Antibiotics are chemotherapeutic drugs that function by inhibiting an important cellular structure or p rocess
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of an organism that is causing an infection. Which of the following would not be affected byan antibiotic th
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at targets cellular metabolic enzymes?
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a. Streptococcus pyogenes bacteria c. ameba hy hy


b. Herpes virus hy d. bread mold h y hy




ANS: B hy DIF: Moderate REF: 1.1 hy


OBJ: 1.1c Define viruses, and explain how they relate to living cells.MS C: A
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nalyzing

12. Which scientist is credited with constructing the first microscope?
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a. Antonie van Leeuwenhoek
h y hy c. Robert Hooke
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b. Catherine of Siena
h y hy d. Louis Pasteur
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ANS: C hy DIF: Easy REF: 1.2 hy


OBJ: 1.2a Explain how microbial diseases have changed human history. MS
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C: Remembering
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13. Which of the following was an unexpected benefit of the 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
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d. The population decline enabled the cultural advancement of the Renaissance.
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ANS: D hy DIF: Easy REF: 1.2 hy


OBJ: 1.2a Explain how microbialgdiseases have changed human history. MSC
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: Understanding
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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 hy c. mold filaments hy


b. dust mites hy d. Mycobacterium tuberculosis hy




ANS: D hy DIF: Moderate REF: h y 1.2