Chapter 1 Flashcards
Viruses, viroids, and prions all
A. may be considered acellular agents of disease. B. operate intracellularly AND may be considered acellular agents of disease. C. operate intracellularly. D. contain DNA. E. infect only animals.
B. operate intracellularly AND may be considered acellular agents of disease.
Archaea are very similar to bacteria and have rigid cell walls made of peptidoglycan.
True
False
False
Microorganisms are involved in
A. causing disease. B. curing/treating disease. C. preparing food. D. cleaning up pollutants. E. All of the choices are correct
E. All of the choices are correct
The outbreak of measles within the last few years was due to
A. increase in sensitivity of detection techniques. B. mutation of the virus. C. change in the environment. D. a decline in vaccination of children in the previous years.
D. a decline in vaccination of children in the previous years.
Which group(s) below contain single-celled and multicellular organisms?
A. Algae B. Fungi C. Protozoa D. All of the choices are correct. E. Algae AND Fungi
E. Algae AND Fungi
Bacteria are good models to use because they
A. have complicated growth requirements. B. share many biochemical/physiological properties with more complicated organisms. C. can be assembled into multicellular organisms. D. are large in size.
B. share many biochemical/physiological properties with more complicated organisms.
Diseases such as ulcers and cardiovascular disease
A. are solely due to genetics. B. are solely due to lifestyle. C. have been shown to be, or may be due to, a bacterial infection. D. are due to new mutations in bacteria.
C. have been shown to be, or may be due to, a bacterial infection.
Lyme disease is an example of a disease
A. that is due to a greater degree of interaction between humans and tick-carrying animals. B. that is due to a mutation in the human genome. C. that is due to a decline in vaccinations. D. that is due to climate change leading to a greater mosquito population.
A. that is due to a greater degree of interaction between humans and tick-carrying animals.
Which of these may pertain to the term strain?
A. E.coli0157:H7 B. E.coli0157:H7 AND minor variation of a species C. E.coli A. Major variation of a species B. Minor variation of a species
B. E.coli0157:H7 AND minor variation of a species
Within a lab, a scientist has two samples-the first is a prion sample, while the second is a viroid sample. But those pesky labels have come off of the flasks! She wants to run a simple analysis to determine which one is which. What type of molecule would she look for to determine which one is which?
A. Polysaccharides B. DNA C. Lipids D. Protein
D. Protein
The work of Tyndall and Cohn
A. allowed scientists to see microorganisms. B. supported the idea of spontaneous generation. C. was used to explain why others investigating spontaneous generation had obtained results that were opposite of those obtained by Pasteur. D. showed that microbes caused disease.
C. was used to explain why others investigating spontaneous generation had obtained results that were opposite of those obtained by Pasteur.
Bacteria are useful to study because
A. they produce protein in a similar manner to more complex organisms. B. they replicate DNA in a similar manner to more complex organisms. C. they produce energy in a similar manner to more complex organisms. D. they are grown quickly, easily, and cheaply. E. All of the choices are correct.
E. All of the choices are correct.
The scientific name of an organism includes its
A. family and genus. B. genus and species. C. genus and species AND domain. D. first name and last name. E. domain.
B. genus and species.
The prokaryotic cell scheme is found in
A. bacteria. B. archaea. C. eucarya. D. All of the choices are correct. E. bacteria AND archaea.
E. bacteria AND archaea.
A new organism was found that was unicellular and 1 cm long. The “large” size of this organism alone would
A. mean that it had to be in the domain eukarya. B. mean that it had to be a protista. C. mean that it could not be a bacterium. D. mean little.
D. mean little.
Bacteria and eukarya both contain membrane-bound organelles.
True
False
False
Newly emerging or reemerging diseases
A. may be due to changing lifestyles, are exemplified by Lyme disease and toxic shock syndrome, AND may reflect a breakdown in sanitation/social order. B. may be due to changing lifestyles. C. may be related to global cooling. D. may reflect a breakdown in sanitation/social order. E. are exemplified by Lyme disease and toxic shock syndrome.
A. may be due to changing lifestyles, are exemplified by Lyme disease and toxic shock syndrome, AND may reflect a breakdown in sanitation/social order.
Viruses
A. are single-celled organisms. B. are obligate intracellular parasites. C. consist of only proteins. D. are in the DomainArchaea. E. are obligate intracellular parasites AND are single-celled organisms.
B. are obligate intracellular parasites.
Viruses are in the group
A. viridaeae. B. eukarya. C. archaea. D. bacteria. E. None of the choices is correct.
E. None of the choices is correct.
Both viruses and viroids are
A. interdependent with one another for reproduction. B. obligate intracellular parasites. C. larger than most bacteria in size. D. capable of independent reproduction.
B. obligate intracellular parasites.
Bacteria have been used to help produce or modifyfood products
A. since the late 1800s. B. since the 1950s. C. for several thousand years. D. since the Middle Ages.
C. for several thousand years.
The Golden Age of Medical Microbiology
A. occurred during the late 1800s to early 1900s, is a time when the knowledge of and techniques to work with bacteria blossomed AND was when people realized that diseases could be caused by invisible agents. B. occurred during the late 1800s to early 1900s. C. is a time when the knowledge of and techniques to work with bacteria blossomed. D. was when people realized that diseases could be caused by invisible agents. E. started in the 1990s with the advent of genetic engineering.
A. occurred during the late 1800s to early 1900s, is a time when the knowledge of and techniques to work with bacteria blossomed AND was when people realized that diseases could be caused by invisible agents.
Plants are dependent on microorganisms for
A. providing water. B. changing atmospheric nitrogen to a usable form. C. providing carbohydrates. D. providing oxygen.
B. changing atmospheric nitrogen to a usable form.
The human body only contains bacteria during illness.
True
False
False
