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WorksheetsUnit 1 The Microbial World and You Review
Total questions: 59
Worksheet time: 30mins
What are microorganisms?
Organisms that are too small to be seen with the unaided eye
Organisms that can be seen with the naked eye
Only bacteria
Only viruses
Microorganisms are essential to our life. Each of the following is an example of a beneficial function of microorganisms EXCEPT
Alternative fuel production
Bioremediation
Gene Therapy
Produce fermented foods
Which of the following foods is produced by microorganisms?
Bread
Cheese
Vinegar
All of the above
Microorganisms are used in manufacturing (e.g., cellulase) and ________.
disease treatment
space travel
metal mining
weather forecasting
What is the purpose of aseptic technique in microbiology laboratories?
To prevent contamination in medicine and in microbiology laboratories
To increase the growth rate of bacteria
To change the color of bacterial colonies
To make bacteria resistant to antibiotics
Who established the system of scientific nomenclature for naming microorganisms?
Louis Pasteur
Carolus Linnaeus
Robert Koch
Alexander Fleming
Each organism has two names: the ______ and the ______ epithet.
genus, specific
family, general
order, common
class, unique
The genus is ______ and underlined. The specific epithet is ______ case.
capitalized, lower
lower, capitalized
underlined, capitalized
capitalized, upper
Which bacterium is named after Theodor Escherich and describes a habitat in the large intestine or colon?
Staphylococcus aureus
Escherichia coli
Bacillus subtilis
Streptococcus pneumoniae
Staphylococcus aureus describes the clustered arrangement of the cells and the golden color of the colonies.
staphylo-, aur-
strepto-, chloro-
diplo-, cyano-
tetrad-, rubro-
Which of the following is NOT a characteristic of bacteria?
Prokaryotes
Peptidoglycan cell walls
Binary fission
Multicellular
Bacteria can obtain energy from organic chemicals, inorganic chemicals, or ________.
photosynthesis
fermentation
respiration
digestion
Archaea live in __________ environments.
extreme
temperate
urban
aquatic
Fungi have ______ cell walls.
chitin
cellulose
pectin
glycogen
Protozoa may be motile via ______, cilia, or flagella.
pseudopods
spores
capsules
enzymes
Algae have ______ cell walls.
cellulose
chitin
peptidoglycan
glycogen
Algae use ______ for energy.
photosynthesis
fermentation
chemosynthesis
respiration
Algae produce molecular ______ and organic compounds.
oxygen
hydrogen
carbon dioxide
nitrogen
Viruses consist of DNA or ______ core.
RNA
Protein
Lipid
Carbohydrate
The core of a virus is surrounded by a ______ coat.
protein
lipid
carbohydrate
nucleic acid
Viruses are replicated only when they are in a ______ host cell.
living
dead
artificial
inactive
Parasitic flatworms and round worms are called ______.
helminths
protozoa
fungi
bacteria
Name the three domains in the classification of microorganisms.
Bacteria, Archaea, Eukarya
Bacteria, Protista, Fungi
Archaea, Plantae, Animalia
Eukarya, Fungi, Protista
Which of the following is NOT a group under Eukarya?
Protists
Fungi
Plants
Viruses
Who reported in 1665 that living things were composed of little boxes or cells?
Anton Van Leeuwenhoek
Robert Hooke
Rudolf Virchow
Louis Pasteur
According to Rudolf Virchow, cells arise from ________ cells.
preexisting
dead
newly formed
foreign
stem
What does the Cell Theory state?
All living things are composed of cells and come from preexisting cells.
All living things are made only of tissues and organs.
Cells are only found in plants, not animals.
Living things can arise spontaneously from non-living matter.
Who described live microorganisms that he observed in teeth scrapings, rain water, and peppercorn infusions between 1673-1723?
Robert Hooke
Anton Van Leeuwenhoek
Rudolf Virchow
Louis Pasteur
The hypothesis that living organisms arise from nonliving matter is called ________.
spontaneous generation
biogenesis
cell theory
natural selection
The alternative hypothesis that living organisms arise from preexisting life is called ________.
Biogenesis
Spontaneous generation
Abiogenesis
Panspermia
Pasteur’s __________________ flask kept microbes out but let air in.
S-shaped
round-bottom
flat-top
conical
Fermentation is the conversion of ________ to ________ to make beer and wine.
sugar to alcohol
protein to fat
water to carbon dioxide
oxygen to glucose
What is pasteurization?
Pasteurization is the application of a high heat for a short time.
Pasteurization is the process of freezing food to preserve it.
Pasteurization is the method of adding preservatives to milk.
Pasteurization is the technique of fermenting dairy products.
In 1835, who showed that a silk worm disease was caused by a fungus?
Agostino Bassi
Louis Pasteur
Robert Koch
Edward Jenner
Who advocated hand washing to prevent transmission of puerperal fever from one obstetrical patient to another in the 1840s?
Ignaz Semmelwise
Louis Pasteur
Joseph Lister
Edward Jenner
Who inoculated a person with cowpox virus in 1796 to protect them from smallpox?
Edward Jenner
Louis Pasteur
Alexander Fleming
Robert Koch
Vaccination is derived from the Latin word vacca. What does vacca mean?
Cow
Sheep
Horse
Pig
The protection given by vaccination is called ________.
immunity
infection
allergy
disease
Chemotherapeutic agents used to treat infectious disease can be synthetic drugs or ________.
antibiotics
vitamins
hormones
enzymes
Quinine from tree bark was long used to treat which disease?
Malaria
Tuberculosis
Diabetes
Influenza
Who developed a synthetic arsenic drug, salvarsan, to treat syphilis in 1910?
Paul Ehrlich
Alexander Fleming
Louis Pasteur
Robert Koch
In which decade were sulfonamides synthesized?
1930s
1920s
1940s
1950s
Who discovered the first antibiotic in 1928?
Alexander Fleming
Louis Pasteur
Robert Koch
Joseph Lister
In which decade was penicillin tested clinically and mass produced?
1940s
1920s
1950s
1960s
Bacteriology is the study of ________.
bacteria
viruses
fungi
protozoa
Mycology is the study of ________.
fungi
plants
bacteria
viruses
Parasitology is the study of ________ and parasitic worms.
protozoa
bacteria
viruses
fungi
Recombinant DNA is DNA made from ________.
two different sources
a single source
proteins and lipids
RNA molecules
Who showed that genes encode a cell’s enzymes in 1942?
Paul Berg
George Beadle and Edward Tatum
Oswald Avery, Colin MacLeod, and Maclyn McCarty
Francois Jacob and Jacques Monod
Who showed that DNA was the hereditary material in 1944?
Paul Berg
George Beadle and Edward Tatum
Oswald Avery, Colin MacLeod, and Maclyn McCarty
Francois Jacob and Jacques Monod
Francois Jacob and Jacques Monod discovered the role of ________ in protein synthesis (1961).
mRNA
DNA
tRNA
rRNA
Bacteria degrade organic matter in ________.
sewage
air
plastic
metal
Microbes that are pathogenic to insects are alternatives to ________ in preventing insect damage to agricultural crops and disease transmission.
chemical pesticides
fertilizers
herbicides
growth hormones
Bacillus thuringiensis infections are fatal in many insects but harmless to other animals, including humans, and ________.
plants
birds
fish
fungi
Through genetic engineering, bacteria and fungi can produce a variety of proteins including vaccines and ________.
enzymes
carbohydrates
lipids
vitamins
Missing or defective genes in human cells can be replaced in ________.
gene therapy
chemotherapy
radiation therapy
immunotherapy
What is the function of normal microbiota?
Cause disease
Prevent growth of pathogens
Produce toxins
None of the above
Resistance is the ability of the body to ______.
ward off disease
increase weight rapidly
digest food quickly
lose energy easily
Emerging infectious diseases (EID) are:
Old diseases with new treatments
New diseases and diseases increasing in incidence
Diseases that only affect animals
Diseases that are always fatal
