01-1
Microbiology A Systems Approach 5th Edition Cowan Test Bank
CH-01: Test Bank
Student:
- Microorganisms are best defined as organisms that
- can only be found growing in laboratories.
- are too small to be seen with the unaided eye.
- are infectious particles.
- lack a cell nucleus.
- cause human disease.
- Which of the following are not considered microorganisms?
- Fungi
- Protozoa
- Viruses
- Bacteria
- Mosquitoes
- Helminths are .
- molds
- parasitic worms
- bacteria
- protozoa
- infectious particles
- Among the types of microorganisms, the are noncellular.
- protozoans
- bacteria
- viruses
- helminths
- Studies of the immune response to an infection caused by microorganisms would be performed
by a(n) .
- hypersensitivity specialist
- immunologist
- geomicrobiologist
- epidemiologist
- Which of the following pairs of career descriptions and work tasks is not correctly matched?
- Medical microbiologist -- identify the cause of a bladder infection at a hospital lab
- Industrial microbiologist -- manipulate bacterial strains to be less pathogenic
- Agricultural microbiologist -- identify bacterial causes of crop disease
- Public health microbiologist -- track the incidence of AIDS in a population
- A scientist who studies the influence of microbes in the formation of caves is called a(n) _ .
- astrobiologist
- epidemiologist
- geomicrobiologist
- immunologist 1 / 4
01-2
- Astrobiology is considered a sub-discipline of microbiology because
- life elsewhere in the universe is likely to be microbial.
- microbes are known to exist on other planets.
- all extraterrestrials known are microbial.
- only microbes can reproduce under the extreme conditions in outer space.
- Which of the following does not indicate microbe involvement in energy and nutrient flow?
- Decomposition of dead matter and wastes
- Digestion of complex carbohydrates in animal diets
- Formation of greenhouse gases, CO2 and methane
- Thermal hot springs warmed by heat from earth's interior
- The microorganisms that recycle nutrients by breaking down dead matter and wastes are called
.
- fermenters
- eukaryotes
- decomposers
- pathogens
- prokaryotes
- The majority of oxygen in earth's atmosphere is a product of photosynthesis by .
- rain forests
- microorganisms
- green plants
- agricultural lands
- The three cell types discussed, eukaryotes, archaea, and bacteria, all derived from .
- cells with a true nucleus
- the last universal common ancestor
- photosynthetic bacteria
- archaea
- The first cells appeared about billion years ago.
- 5
B. 4.5
C. 3.5
- 2
- 1
- A hypothesis must be tested many times before it can be considered a theory.
True False
- Which area of biology states that living things undergo gradual structural and functional changes
over long periods of time?
- Evolution
- Morphology
- Phylogeny
- Genetics
- Transformation
- When humans manipulate the genes of microorganisms, the process is called . 2 / 4
01-3
- epidemiology
- taxonomy
- bioremediation
- genetic engineering
- immunology
- Which activity is an example of biotechnology?
- Bacteria in the soil secreting an antibiotic to kill competitors
- Public health officials monitoring diseases in a community
- Egyptians using moldy bread on wounds
- A microbiologist using the microscope to view bacteria
- Escherichia coli producing human insulin
- Which of the following is a traditional human use of microorganisms?
- Baking bread
- Cleaning up oil spills
- Treating water and sewage
- Mass-producing antibiotics
- Using microbes to detoxify a site contaminated with heavy metals is an example of .
- biotechnology
- bioremediation
- decomposition
- epidemiology
- immunology
- Disease-causing microorganisms are called .
- pathogens
- decomposers
- fermenters
- bacteria
- eukaryotes
- The number one worldwide infectious diseases are .
- AIDS-related diseases
- malaria and other protozoan diseases
- respiratory diseases
- measles and other rash diseases
- diarrheal diseases
- Many chronic medical conditions have been found to be associated with
microbial agents.
True False
- The incidence of deaths from communicable disease is _ in the United States
compared to the entire world.
- less
- greater
- about the same
- In which way are bacteria and eukaryotes the same?
- Contain a nucleus to hold DNA
- Contain ribosomes for protein synthesis 3 / 4
01-4
- Contain membrane-bound organelles
- Have a cell wall for rigidity
- In which way are archaea and eukaryotes the same?
- Have a cell wall for rigidity
- Can use flagella for movement
- Contain mitochondria for energy production
- Contain membrane-bound organelles
- All bacteria and archaea are microorganisms, but only some eukaryotes are
microorganisms.
True False
- Which of the following is a unique characteristic of viruses that distinguishes them from the other
major groups of microorganisms?
- Cannot be seen without a microscope
- Contain genetic material
- Cause human disease
- Lack a nucleus
- Lack cell structure
- Organisms called parasites are .
- the decomposers in ecosystems
- always viruses
- always harmful to their host
- free-living
- Which group of microorganisms is composed only of hereditary material wrapped in a protein
covering?
- Yeasts
- Parasites
- Viruses
- Fungi
- Bacteria
- Eukaryotic cells are larger than bacterial or archaeal cells; all cells are larger than
macromolecules. Where do viruses fit on this scale?
- Viruses are smaller than eukaryotic cells, but larger than bacterial or archaeal cells.
- Viruses are smaller than macromolecules.
- Viruses are larger than eukaryotic cells.
- Viruses are smaller than bacterial or archaeal cells, but larger than macromolecules.
- In general, eukaryotic cells are about times larger than bacterial or archaeal cells.
- 2
- 10
- 50
D. 1000
- Archaeal cells are about bacterial cells.
- ten times smaller than
- the same size as
- ten times larger than
- / 4