microbiologynursinglatestgradedApassViruses not included in phylogenetic trees for which of the following reasons? A. It is too difficult to observe their characteristics. B. They are acellular and nonliving.* C. They do not have any genes, which prevents genetic analysis. D. They lack a nucleus.Ma...
microbiologynursinglatestgradeda20222023passviruses not included in phylogenetic trees for which of the following reasons a it is too difficult to observe their characteristics b they are acellula
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,Microbiology by
OpenStax
by
Nina Parker
Mark Schneegurt
Anh-Hue Thi Tu
Brian M. Forster
Philip Lister
, Chapter 1: An Invisible World
Chapter 1: An Invisible World
* = Correct answer
Multiple Choice
1. Which of the following is true of the microbial world?
A. All microbes are harmful.
B. Humans could survive without microbes.
C. Many microbes are helpful.*
D. Most microbes are pathogenic.
2. Which individual first observed unicellular organisms, which he called “animalcules,” using
a microscope he developed?
A. Robert Koch
B. Louis Pasteur
C. Thucydides
D. Antonie van Leeuwenhoek*
3. The Swedish botanist known for having developed an important biological classification
system is which of the following people?
A. Ernst Haeckel
B. Carolus Linnaeus*
C. Louis Pasteur
D. Robert Whittaker
4. Which are the three currently accepted domains?
A. Archaea, Bacteria, and Eukarya*
B. Archaea, Prokaryota, and Eukaryota
C. Bacteria, Fungi, and Protista
D. Bacteria, Prokaryota, and Eukarya
5. Which two taxonomic units are typically used to identify an organism when using binomial
nomenclature?
A. domain and kingdom
B. genus and family
C. genus and species*
D. phylum and class
6. Which of the following is not true about the process of fermentation?
A. It can help preserve foods, preventing spoilage.
B. It converts sugars to organic acids, alcohols, and/or gases such as carbon dioxide.
C. It is carried out exclusively by unicellular eukaryotes such as yeast.*
D. It is used to make foods such as cheese and bread.
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7. Viruses not included in phylogenetic trees for which of the following reasons?
A. It is too difficult to observe their characteristics.
B. They are acellular and nonliving.*
C. They do not have any genes, which prevents genetic analysis.
D. They lack a nucleus.
8. Which is the best description of the primary purpose of a phylogeny?
A. Phylogenies show all the alterative names for each species.
B. Phylogenies show all the common names for each species.
C. Phylogenies show evolutionary relatedness between organisms.*
D. Phylogenies show interactions between species in a shared habitat.
9. Horizontal gene transfer involves which of the following?
A. any transfer of genes in a laboratory setting
B. the transfer of genes from a virus to a bacterium or vice versa but not any other form of
gene transfer
C. the transfer of genes from one individual to another, including from one species to
another, but not from parent to offspring*
D. the transfer of genes from parent to offspring
10. Bacteria are generally identified to species by using which of the following?
A. a combination of genetic, biochemical, and microscopic approaches*
B. a combination of microscopic and physiological approaches, but not genetics
C. primarily characteristics such as motility that can be visualized using microscopy
D. primarily morphological characteristics of individual cells
11. For taxonomic classification of microbes, serological tests typically are used to do which of
the following?
A. determine complete genome sequences for microbes
B. identify proteins on the basis of their reaction with specific antibodies*
C. run analyses to identify whether particular genes are present
D. visualize microbial external morphology
12. Which of the following is true of bacterial strains?
A. They are closely related subtypes within a bacterial species that may or may not have
similar properties.*
B. They are informal bacterial groupings used for medical distinctions but not recognized for
classification purposes.
C. They are more distantly related to each other than are members of a single bacterial
species.
D. They are very similar bacteria with almost identical properties.
13. Which of the following indicates how bacteria and viruses typically compare in size?
A. Bacteria are indistinguishable from viruses.
B. Bacteria are much larger than viruses.*
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