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- Multiple ChoicePlease save your changes before editing any questions.
1. Which of the following is true of the microbial world?
All microbes are harmful
Many microbes are pathogenic
Most microbes are helpful
Humans could survive without microbes
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2. Which individual first observed unicellular organisms, which he called “animalcules,” using a microscope he developed?
Robert Koch
Louis Pasteur
Thucydides
Antonie van Leeuwenhoek
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3.Which are the three currently accepted domains?
Archaea, Bacteria, and Eukarya
Archaea, Prokaryota, and Eukaryota
Bacteria, Prokaryota, and Eukarya
Bacteria, Fungi, and Protista
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4.Which of the following is not true about the process of fermentation?
It can help preserve foods, preventing spoilage.
It converts sugars to organic acids, alcohols, and/or gases such as carbon dioxide.
It is carried out exclusively by unicellular eukaryotes such as yeast.
It is used to make foods such as cheese and bread.
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6. Viruses not included in phylogenetic trees for which of the following reasons?
It is too difficult to observe their characteristics.
They lack a nucleus.
They are acellular and nonliving.
They do not have any genes, which prevents genetic analysis.
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5. Which is the best description of the primary purpose of a phylogeny?
Phylogenies show all the alterative names for each species.
. Phylogenies show all the common names for each species.
Phylogenies show evolutionary relatedness between organisms.
Phylogenies show interactions between species in a shared habitat.
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7. Bergey’s Manual of Systematic Bacteriology is used primarily as which of the following?
a guide to bacterial shapes
a list and characterization of all known medically relevant microbes
a reference for bacterial classification
a historical account of changes in classification techniques
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8. Based just on the name, which of the following groups of bacteria contains entirely species that consume organic compounds for food?
cyanobacteria
green nonsulfur bacteria
green sulfur bacteria
nonphotosynthetic bacteria
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9.Chitin cell walls are characteristic of which taxonomic group?
archaea
algae
fungi
bacteria
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- ____ is the study of how antibodies are released in response to a pathogen.
pathology
immunology
vaccinology
parasitology
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11.1. The cytoplasmic extensions used by some protists to move are called ________.
cilia
flagellum
spores
pseudopodia
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12. Which famous scientist developed a vaccine for rabies?
Louis Pasteur
Robert Koch
Antonie von Leeuwenhoeck
Thucydides
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13.Bacteria, Archaea, and Eukarya, and their common ancestor. Of these three groups, which two are more closely related from the figure?
Archaea and Eukarya
Eukarya and Bacteria
Archaea and Bacteria
All are very close to each other
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14.1. The genus of Halobacterium salinarum is ________.
phylum
class
genus
species
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15.The cell walls of archaeans often contain which of the following substances?
cellulose
chitin
peptidoglycan
protein