BIO 150 Homework Assignment 1 (20 points)
Chapter 1 & Chapter 10 Use a scantron to answer the questions below. 53 Multiple Choice Questions (One best answer)
E 1) Microorganisms are invo
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BIO 150 Homework Assignment 1 (20 points)
Chapter 1 & Chapter 10 Use a scantron to answer the questions below. 53 Multiple Choice Questions (One best answer)
E 1) Microorganisms are involved in each of the following processes EXCEPT
A) infection.
B) decomposition of organic material.
C) O2 production.
D) food production.
E) smog production.
D 2) Each of the following organisms would be considered a microbe EXCEPT
A) yeast.
B) protozoan.
C) bacterium.
D) mushroom.
E) virus.
C 3) The term used to describe a disease-causing microorganism is
A) microbe.
B) bacterium.
C) pathogen.
D) virus.
E) infection.
E 4) Common commercial benefits of microorganisms include synthesis of
A) antibiotics.
B) aspirin.
C) insulin.
D) antibiotics and aspirin.
E) antibiotics and insulin.
D 5) The formal system for classifying and naming organisms was developed by
A) Robert Koch.
B) Ignaz Semmelweis.
C) Aristotle.
D) Carolus Linnaeus.
E) Louis Pasteur.
C 6) In the name Staphylococcus aureus, aureus is the
A) genus.
B) domain name.
C) species name/specific epithet.
D) kingdom.
E) family name.
B 7) A prokaryotic cell may possess each of the following cellular components EXCEPT
A) flagella.
B) a true nucleus.
C) ribosomes.
D) a cell wall.
E) a cell membrane.
A 8) Which of the following is NOT associated with viruses?
A) organelles
B) nucleic acid
C) envelope
D) spikes
E) capsid
Figure 1.1
A 9) The bacterial shape of the cells in Figure 1.1 would best be described as
A) bacillus.
B) spiral.
C) coccus.
D) ovoid.
E) columnar.
A 10) Viruses are not considered living organisms because they
A) cannot reproduce by themselves.
B) are structurally very simple.
C) can only be visualized using an electron microscope.
D) typically associated with disease.
E) are ubiquitous in nature.
E 11) The infectious agent that causes AIDS is a
A) mold.
B) bacterium.
C) yeast.
D) protozoan.
E) virus.
A 12) Which of the following is NOT a domain in the three-domain system?
A) Animalia
B) Archaea
C) Bacteria
D) Eukarya
C 13) Classification of organisms into three domains is based on
A) the presence of a cell wall.
B) the number of cells in the organism.
C) cellular organization and ribosomal RNA.
D) nutritional requirements.
E) cellular proteins.
A 14) Archaea differ from bacteria in that archaea
A) are mostly found in extreme environments.
B) lack nuclei.
C) use organic compounds for food.
D) reproduce by binary fission.
E) are prokaryotic.
C 15) Who is credited with first observing cells?
A) Robert Koch
B) Anton van Leeuwenhoek
C) Robert Hooke
D) Louis Pasteur
E) Carolus Linnaeus
B 16) Who is credited with first observing microorganisms?
A) Robert Hooke
B) Anton van Leeuwenhoek
C) Robert Koch
D) Louis Pasteur
E) Carolus Linnaeus
B 17) Biogenesis refers to the
A) spontaneous generation of organisms from nonliving matter.
B) development of life forms from preexisting life forms.
C) development of aseptic technique.
D) germ theory of disease.
D 18) If you were setting up an experiment to disprove spontaneous generation in a liquid medium, which of the following would be essential to the experiment?
A) supplying the liquid with nutrients
B) starting with a liquid that contains microorganisms
C) adding antibiotics to the liquid
D) using a sterile liquid and eliminating exposure to microorganisms
E) adding carbon dioxide to the liquid
A 19) The arguments supporting spontaneous generation were finally disproved by
A) Louis Pasteur.
B) Francesco Redi.
C) Rudolf Virchow.
D) John Needham.
E) Lazzaro Spallanzani.
E 20) Regarding Louis Pasteur’s experiments with the S-neck flask, which of the following statements is TRUE?
A) Air exchange was involved.
B) A food source was provided.
C) The possibility of contamination was removed.
D) All preexisting microorganisms were killed.
E) All of the answers are correct.
A 21) The microbial process of converting sugars to alcohol is known as
A) fermentation.
B) pasteurization.
C) tyndallization.
D) lyophilization.
E) alcoholism.
C 22) Proof that a microbe could cause disease was provided by
A) Pasteur.
B) Lister.
C) Koch.
D) Wasserman.
E) Semmelweis.
E 23) The use of phenol (carbolic acid) as a wound disinfectant was first practiced by
A) Koch.
B) Semmelweis.
C) Pasteur.
D) Holmes.
E) Lister.
E 24) Mycology is the study of
A) mycoplasma.
B) mushrooms.
C) protozoa.
D) molds.
E) molds, yeast, and mushrooms.
C 25) The first step for directly linking a microbe to a specific disease according to Koch’s postulates is to
A) culture the blood or other body fluid from a diseased animal using nutrient medium.
B) inject a sample of blood or other body fluid from a diseased animal into a healthy animal.
C) obtain a sample of blood or other body fluid from a diseased animal.
D) compare the blood of a sick animal to blood obtained from a healthy animal.
E) isolate microbes from the blood of healthy animals.
D 26) In which of the following situations would Koch’s postulates be utilized?
A) formulation of a vaccine against a new pathogen in a genetic engineering lab
B) development of a new antibiotic in a pharmaceutical lab
C) determination of the cause of cancer in a patient
D) determination of the cause of a new infectious disease in a microbiology lab
E) diagnosing a patient’s illness in a hospital microbiology laboratory.
B 27) Robert Koch was the first to identify the cause of
A) smallpox.
B) anthrax.
C) diphtheria.
D) AIDS.
E) leprosy.
B 28) is the physician first associated with vaccination.
A) Pasteur
B) Jenner
C) Lister
D) Koch
E) Escherich
A 29) Which of the following findings was essential for Edward Jenner’s vaccination process?
A) Exposure to a milder disease form may produce immunity.
B) A weakened microorganism will not cause disease.
C) Someone who recovers from a disease will not acquire that disease again.
D) Disease is caused by viruses.
E) Pathogenic microorganisms infect all humans and animals in the same manner.
E 30) Antibiotics are produced by
A) viruses.
B) bacteria.
C) protozoa.
D) fungi.
E) bacteria and fungi.
C 31) The first antibiotic to be utilized was
A) salvarsan.
B) vancomycin.
C) penicillin.
D) sulfonamides.
E) quinine.
C 32) Who was the first scientist to pursue a “magic bullet” that could be used to treat infectious disease?
A) Jenner
B) Pasteur
C) Ehrlich
D) Lister
E) Semmelweis
D 33) Vaccinations are available for all of the following diseases EXCEPT
A) measles.
B) rubella.
C) mumps.
D) strep throat.
E) hepatitis B.
E 34) Recombinant DNA refers to the
A) study of bacterial ribosomes.
B) study of the function of genes.
C) interaction between human and bacterial cells.
D) synthesis of proteins from genes.
E) DNA resulting when bacterial genes are inserted into plant/animal genome, or vice versa.
C 35) Recombinant DNA technology has become an increasingly important part of our life. It is used for all of the following EXCEPT
A) vaccine production.
B) enhancing food longevity.
C) synthesis of water.
D) drug production.
E) increasing the nutritional value of food.
D 36) Normal microbiota are typically found in and on all the following body locations EXCEPT the
A) skin.
B) mouth.
C) colon.
D) blood.
E) upper respiratory system.
A 37) Which of the following statements about biofilms is FALSE?
A) Compared to free-living bacteria, biofilms are more sensitive to antibiotics.
B) Biofilms in pipes can block the flow of water.
C) Biofilms in your body protect mucous membranes from harmful microbes.
D) Biofilms on medical devices cause infections.
E) Biofilms on rocks provide food for animal life.
D 38) Which of the following statements about archaea is FALSE?
A) They are prokaryotes.
B) They lack peptidoglycan in their cell walls.
C) Some are thermoacidophiles; others are extreme halophiles.
D) They evolved before bacteria.
E) Some produce methane from carbon dioxide and hydrogen.
B 39) What is the outstanding characteristic of the Kingdom Fungi?
A) All members are photosynthetic.
B) Members absorb dissolved organic matter.
C) Members absorb dissolved inorganic matter.
D) All members are microscopic.
E) All members are macroscopic.
D 40) Which of the following statements about members of the Kingdom Plantae is FALSE?
A) They are multicellular.
B) They are composed of eukaryotic cells.
C) They undergo photosynthesis.
D) They use organic carbon sources.
E) They synthesize organic molecules.
C 41) Which of the following statements about the members of the Kingdom Animalia is FALSE?
A) They are multicellular.
B) They are composed of eukaryotic cells.
C) They undergo photosynthesis.
D) They ingest nutrients through a mouth.
E) They are heterotrophs.
A 42) Which of the following is the best evidence for a three-domain system?
A) Nucleotide sequences in ribosomal RNA vary between all three domains.
B) There are three distinctly different sets of metabolic reactions.
C) There are three distinctly different Gram reactions.
D) Some bacteria live in extreme environments.
E) There are three distinctly different types of nuclei.
B 43) In the scientific name Enterobacter aerogenes, Enterobacter is the
A) specific epithet.
B) genus.
C) family.
D) order.
E) kingdom.
D 44) Bacteria and Archaea are similar in which of the following?
A) peptidoglycan cell walls
B) methionine as the start signal for protein synthesis
C) sensitivity to antibiotics
D) considered prokaryotic cells
E) plasma membrane ester linkage
D 45) Into which group would you place a multicellular heterotroph with chitin cell walls?
A) Animalia
B) Archaea
C) Bacteria
D) Fungi
E) Plantae
B 46) Into which group would you place a photosynthetic cell that lacks a nucleus?
A) Animalia
B) Bacteria
C) Fungi
D) Plantae
E) Protista
B 47) You discovered a unicellular organism that lacks a nucleus and peptidoglycan. You suspect the organism is in the group
A) Animalia.
B) Archaea.
C) Bacteria.
D) Fungi.
E) Plantae.
B 48) Into which group would you place a unicellular organism that has 70S ribosomes and a peptidoglycan cell wall?
A) Animalia
B) Bacteria
C) Fungi
D) Plantae
E) Protist
A 49) Into which group would you place a multicellular organism that has a mouth and lives inside the human liver?
A) Animalia
B) Fungi
C) Plantae
D) Protozoa
E) Archaea
Table 1.1
1. 9+2 flagella
2. Nucleus
3. Plasma membrane
4. Peptidoglycan
5. Mitochondrion
6. Fimbriae
A 50) In Table 1.1, which features are found in nearly all eukarya? A) 2, 3, 5
B) 1, 4, 6
C) 3, 5
D) 2, 3
E) 1, 2, 5
B 51) In Table 1.1, which feature(s) is (are) found only in prokaryotes? A) 1, 2, 3
B) 4, 6
C) 2
D) 1
E) 2, 4, 5
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