Ch 1. Microbiology Assignment Questions
The scientific process involves a series of steps. Rank the first four steps of this process in order. - Develop an explanation and then devise an experiment to test this explanation. - Make an observation about something and ask a question about the situation. - Draw a conclusion - Collect data from this experiment.
1. Make an observation about something and ask a question about the situation. 2. Develop an explanation and then devise an experiment to test this explanation. 3. Collect data from this experiment. 4. Draw a conclusion
Prions are ___ a) infectious proteins b) a type of bacterium c) a type of virus d) a type of viroid
a) infectious proteins
Characteristics of archaea that are similar to bacteria include the a) method of multiplication b) prokaryotic cell structure c) ribosomal RNA sequences d) shapes e) energy sources used
a) method of multiplication d) shapes e) energy sources used
A scientific experiment includes a component that rules out alternative explanations of the results by showing that the only feature that varied in the experiment was the characteristic being tested. The component that does this is called the ___
control
Which of the following is a difference between archaea and bacteria? a) bacteria are found in extreme environments whereas archaea are not b) archaea move by means of cells whereas bacteria move by flagella c) archaea are generally rod-shaped whereas bacteria are generally round d) bacteria possess peptidoglycan in their cell walls whereas archaea do not e) archaea have a nucleus and bacteria do not
d) bacteria possess peptidoglycan in their cell walls whereas archaea do not
Which is true regarding scientific names? a) genus names are commonly abbreviated b) the first letters of both the genus name and the species name should be capitalized c) scientific names are italicized or underlined
a) genus names are commonly abbreviated c) scientific names are italicized or underlined
Identify which of the following characteristics descibe protozoa a) most of them are motile b) single celled prokaryotes c) they ingest inorganic material as their main food source d) they can be found in terrestrial and aquatic habitats
a) most of them are motile d) they can be found in terrestrial and aquatic habitats
The cells of which microorganisms contain membrane-bound organelles? a) archaea b) bacteria c) eukarya
c) eukarya
Which of the following is/are true regarding viruses? a) viruses are nonliving b) viruses are smaller than most bacteria c) viruses are prokaryotic d) viruses are acellular
a) viruses are nonliving b) viruses are smaller than most bacteria d) viruses are acellular
Diseases can reemerge as a result of a) increased funding for public health programs b) parents refusal to vaccinate their children c) pathogens becoming resistant to antimicrobial medications
b) parents refusal to vaccinate their children c) pathogens becoming resistant to antimicrobial medications
Which of the following cannot reproduce independently? a) bacteria b) prions c) viroids d) archaea
b) prions c) viroids
The principal that microorganisms cause certain diseases is now called a) biogenesis b) the germ theory of disease c) the microbial theory of disease
b) the germ theory of disease
___ is the process by which microbes carry out the decomposition of harmful chemicals
bioremediation
Fungi, algae, protozia, and helminths are all a) eukarya b) bacteria c) microscopic d) archaea
d) eukarya
Which of the following is true regarding ALL prokaryotes? a) have peptidoglycan b) cause disease c) are motile d) lack a nucleus
d) lack a nucleus
True or false: Without microorganisms we would run out of certain nutrients.
True
Unlike newspaper or blog articles, communications about scientific discoveries in respected scientific journals include a) a pre-publication review process b) information about the methods used in the experiment c) conclusions based on the results
a) a pre-publication review process b) information about the methods used in the experiment
Which of the following describes bacteria? (Choose all that apply.) a) they multiply by binary fission b) some obtain energy from sunlight c) some obtain energy from sources not used by animals or plants d) all are dependent on sunlight for energy e) some obtain energy from foods similar to what humans eat f) most cause serious disease g) shapes include rod, spherical, and spiral
a) they multiply by binary fission b) some obtain energy from sunlight c) some obtain energy from sources not used by animals or plants e) some obtain energy from foods similar to what humans eat g) shapes include rod, spherical, and spiral
Which of the following is/are true regarding viruses a) viruses are nonliving b) viruses are smaller than most bacteria c) viruses are prokaryotic d) viruses are acellular
a) viruses are nonliving b) viruses are smaller than most bacteria d) viruses are acellular
A significant difference in which of the following characteristics provides the basis for separating archaea and bacteria into two different domains? a) energy sources used b) cell wall composition c) habitats d) ribosomal RNA sequences
b) cell wall composition c) habitats d) ribosomal RNA sequences
___ is a microbial process used in the manufacture of yogurt and cheese
fermentation
For the name Streptococcus pyogenes, the first part (Streptococcus) indicates the
genus
Which of the following infectious diseases killed more people in 1918-19 than in WW I and II combined?
influenza
Compared to the diversity of plants and animals, microbes as a group are
more diverse
Organisms that populate the human body and which protect it from disease are termed _____ _____
normal flora
A ___ is the term used for any disease-causing microorganism
pathogen
Eukaryotes such as algae and protozoa are also referred to as
protists
In the name Escherichia coli K12, the part after the species is the
strain
When extensive amounts of experimental evidence supports a hypothesis, the explanation may become a scientific ___
theory
True or false: eukaryotic microbes are generally larger than prokaryotic microbes
true
True or false: normal microbiota of the body can affect brain chemistry
true
True or false: we could not survive without microorganisms, but they can also be harmful
true
All algae have ___, which contain chlorophyll
chloroplasts
Eukaryotic organisms can be a) multi-celled b) single-celled c) acellular
a) multi-celled b) single-celled
Benefits of normal microbiotca include all except which of the following? a) they damage host tissue, allowing our immune system to rid the body of all microbes b) they out compete pathogens for space c) bacteria degrade foods that our intestines cannot digest
a) they damage host tissue, allowing our immune system to rid the body of all microbes
Algae are a) single celled, photosynthetic prokaryotes b) single celled, photosynthetic eukaryotes c) multicellular, photosynthetic eukaryotes d) multicellular, non photosynthetic eukaryotes
b) single celled, photosynthetic eukaryotes c) multicellular, photosynthetic eukaryotes
Characteristics of archaea that are similar to bacteria include all of the following except the a) energy sources used b) prokaryotic cell structure c) ribosomal RNA sequences d) shapes e) method of multiplication
c) ribosomal RNA sequences
Which of the following are long-established microbial diseases? a) MERS b) SARS c) tuberculosis d) lyme disease e) malaria
c) tuberculosis e) malaria
Which is an example of bioremediation? a) the evolution of antibiotic-resistant microbes due to overuse of a particular antibiotic b) genetically engineering microbes to produce animal proteins such as insulin c) using microbes to digest oil after a spill in the ocean
c) using microbes to digest oil after a spill in the ocean
___ is the domain of organisms whose cells have a nucleus and various organelles
eukaryotic
