Extra Credit Review HW Chapters 10-13 Questions (copy)

The application of phage typing is based on the fact that ________.

1. bacterial viruses attack only members of a specific species

2. bacteria are destroyed by viruses

3. viruses cause disease

4. Staphylococcus causes infections

5. phages and bacteria are related

1

Which of the following arthropods does NOT transmit diseases by sucking blood from a human host?

1. fleas

2. houseflies

3. kissing bugs

4. mosquitoes

5. lice

2

Which of the following is NOT utilized to culture viruses?

1. embryonated eggs

2. animal cell cultures

3. bacterial cultures

4. culture media

5. laboratory animals

4

Which of the following pairs are mismatched?

1. Cytophaga — a gliding, nonfruiting bacterium

2. Archaea — extremophiles

3. Dissimilatory sulfate-reducing bacteria — produce H2S

4. Actinomycetes — reproduce by fragmentation

5. Chemoautotrophic bacteria — fix atmospheric nitrogen

5

Which of the following is necessary for replication of a prion?

1. lysozyme

2. DNA polymerase

3. RNA

4. DNA

5. PrPSc

5

Bacteriophages and animal viruses do not differ significantly in which one of the following processes?

1. Release

2. Attachment

3. Uncoating

4. Penetration

5. Biosynthesis

5

Into which group would you place a photosynthetic cell that lacks a nucleus?

1. Plantae

2. Protista

3. Bacteria

4. Animalia

5. Fungi

3

In the table, which features are found in nearly all members of the Domain Eukarya?

1. 3, 5

2. 1, 2, 5

3. 1, 4, 6

4. 2, 3, 5

5. 2, 3

4

Which of the following statements regarding lichens is FALSE?

1. Lichens are often the first life form to colonize rock or soil.

2. Lichens are a mutualistic relationship between a fungus and a protozoan.

3. The algal partner produces carbohydrates that are absorbed by the fungal partner.

4. Lichens represent a mutualistic relationship between a fungus and an alga.

5. The fungal partner provides a means of attachment and protects the algal partner from desiccation.

2

Which of the following best describes the bacterial group found primarily in the intestines of humans?

1. Endospore-forming rods

2. Gram-negative aerobic rods and cocci

3. Aerobic, helical bacteria

4. Gram-positive cocci

5. Facultatively anaerobic gram-negative rods

5

This figure shows the results of a gel electrophoresis separation of restriction fragments of the DNA of different organisms.

In the figure, which two organisms are most closely related?

1. 1 and 3

2. 2 and 4

3. 2 and 5

4. 3 and 5

5. 4 and 5

1

A feature that may be found in viruses but never in bacteria is

1. may contain an RNA genome.

2. an ability to infect more than one type of host.

3. a sensitivity to antibiotics.

4. the ability to pass through 0.22 micrometer pore filters.

5. they cannot reproduce themselves outside a host.

1

In a direct ELISA test for COVID-19, the method is determining if ________ is/are present in the patient's sample by attempting to bind a labeled antibody to it.

1. a bacteriophage that can infect a particular bacterial strain

2. antibodies against SARS-CoV-2 found in a patient's blood

3. SARS-CoV-2 or an antigen from the virus

4. a known sequence of DNA from a pathogen

3

Staphylococcus and Streptococcus can usually be differentiated by microscopic examination because of their ________.

1. cell shape

2. acid-fast reaction

3. Gram stain reaction

4. cell arrangement

5. endospore formation

4

The genus of bacteria that are particularly problematic in hospital settings due to their ability to grow in solutions with minute traces of unusual carbon sources is

1. Campylobacter.

2. Pseudomonas.

3. Legionella.

4. Staphylococcus.

5. Vibrio.

2

A definitive host harbors which stage of a parasitic cycle?

1. Cyst

2. Larva

3. Miracidium

4. Adult

5. All of the answers are correct.

4

What is not true regarding viruses that infect plants?

1. They must enter through a wound or be introduced by an insect feeding.

2. They can sometimes be cultured in insect cells.

3. They are often cultured in embryonated chicken eggs.

4. They are morphologically similar to animal viruses.

5. They can spread via pollination.

3

If a larva of Echinococcus granulosus is found in humans, humans are the

1. infected host.

2. reservoir.

3. intermediate host.

4. definitive host.

5. None of the answers is correct.

3

The most conclusive evidence that viruses cause cancers was provided by

1. finding oncogenes in viruses.

2. the presence of antibodies against viruses in cancer patients.

3. some liver cancer patients having had hepatitis.

4. treating cancer with antibodies.

5. cancer that developed in chickens following injection of cell-free filtrates.

5

Which of the following is NOT a characteristic of spirochetes?

1. easily observed with brightfield microscopy

2. found in the human oral cavity

3. gram-negative

4. possess an axial filament

5. helical shape

1

You have isolated an aerobic gram-positive, endospore-forming bacterium that grows well on nutrient agar. To which of the following groups does it most likely belong?

1. deltaproteobacteria

2. bacillales

3. phototrophic bacteria

4. gammaproteobacteria

5. The answer cannot be determined based on the information provided.

2

Actinomycetes differ from fungi in that actinomycetes

1. are chemoheterotrophs.

2. cause disease.

3. lack a membrane-bounded nucleus.

4. are decomposers.

5. require light.

3

Assume you have isolated a multicellular heterotrophic organism that produces coenocytic hyphae, motile zoospores, and cellulose cell walls. It is most likely a(n)

1. oomycote alga.

2. zygomycete fungus.

3. ascomycete fungus.

4. tapeworm.

5. green alga.

1

Which of the following statements about members of the Kingdom Plantae is false?

1. They use organic carbon sources for their metabolism.

2. They are composed of eukaryotic cells.

3. They are multicellular.

4. They are photosynthetic.

5. They synthesize organic molecules.

1

Fatty acid methyl ester analysis is commonly used in ________.

1. bacterial identification

2. DNA sequencing reactions

3. DNA fingerprinting

4. serological identification methods

1

What contributes to antigenic shift in influenza viruses?

1. attachment spikes

2. ease of virus transmission

3. a segmented genome

4. different virus subtypes

5. worldwide distribution of the virus

3

The mechanism whereby an enveloped virus leaves a host cell is called

1. penetration.

2. transduction.

3. abduction.

4. lysogeny.

5. budding.

5

Which of the following pairs is mismatched?

1. Basidiomycota – basidiospores

2. Zygomycota – sporangiospores

3. microsporidia – lack mitochondria

4. anamorphs – lack spores

5. Ascomycota – conidiospores

4

Which of the following is the most effective control for malaria?

1. eliminate the intermediate host

2. vaccination

3. eliminate Anopheles mosquitoes

4. treating patients

5. None of these is an effective control.

3

A bacterial species differs from a species of eukaryotic organisms in that a bacterial species

1. does not breed with other species.

2. is a population of cells with similar characteristics.

3. breeds with its own species.

4. has a limited geographical distribution.

5. can be distinguished from other bacterial species.

2

You observe a mass of amoeba-like cells that swarm together, form a stalk, and produce spores. This is a(n)

1. ascomycete.

2. plasmodial slime mold.

3. Euglenozoa.

4. tapeworm.

5. cellular slime mold.

5