The cells of plasmodial slime molds can grow to several centimeters in diameter because

They distribute nutrients by cytoplasmic streaming.

The large surface can absorb nutrients.

Which of the following groups of algae does NOT produce compounds that are toxic to humans?

All of these produce compounds toxic to humans.

Below are several paired items referring to the heartworm Dirofilaria immitis. Which of the pairs is mismatched?

All of these are correctly matched.

The life cycle of the fish tapeworm is similar to that of the beef tapeworm. Which of the following is the most effective preventive measure?

Wearing gloves while handling fish

Not swimming in fish-infested waters

Seventeen patients in ten hospitals had cutaneous infections caused by Rhizopus. In all 17 patients, Elastoplast bandages were placed over sterile gauze pads to cover wounds. Fourteen of the patients had surgical wounds, two had venous line insertion sites, and one had a bite wound. Lesions present when the bandages were removed ranged from vesiculopustular eruptions to ulcerations and skin necrosis requiring debridement. Fungi are more likely than bacteria to contaminate bandages because

They can tolerate low-moisture conditions.

They prefer a neutral environment (pH 7).

They cannot tolerate high osmotic pressure.

They have a fermentative metabolism.

Which of the following statements is false?

In a lichen, the fungus provides the holdfast.

In a lichen, the alga produces carbohydrates.

A lichen doesn't exist if the fungal and algal partners are separated.

Lichens are important soil producers.

Which of the following is NOT a characteristic of parasitic platyhelminths?

They have a complete digestive system.

They are multicellular animals.

They can be divided into flukes and tapeworms.

They are dorsoventrally flattened.

Which of the following pairs is mismatched?

Dinoflagellates - paralytic shellfish poisoning

Lysogeny can result in all of the following EXCEPT

Immunity to reinfection by any phage.

Immunity to reinfection by the same phage.

Acquisition of new characteristics by the host cell.

Transduction of specific genes.

Continuous cell lines differ from primary cell lines in that

Continuous cell lines can be maintained through an indefinite number of generations.

Continuous cell lines always have to be reisolated from animal tissues.

Continuous cell lines are derived from primary cell lines.

Viruses can be grown in continuous cell lines.

Continuous cell lines are from human embryos.

Which of the following statements about spikes is false?

They are found only on enveloped viruses.

They may cause hemagglutination.

They are found only on nonenveloped viruses.

A persistent infection is an infection in which

The disease process occurs gradually over a long period.

The virus remains in equilibrium with the host without causing a disease.

Host cells are gradually lysed.

Viral replication is unusually slow.

Generally, in a DNA-containing virus infection, the host animal cell supplies all of the following EXCEPT

All of these are supplied by the host animal cell.

Which of the following contributes to the difficulty in establishing the etiology of cancer?

Viruses are difficult to observe.

Cancer may not develop until long after infection.

Cancers do not seem to be contagious.

Most viral particles can infect cells without inducing cancer.

A nonenveloped, infectious piece of RNA.

A complete, infectious virus particle.

A capsid without a nucleic acid.

The definition of lysogeny is

Phage DNA is incorporated into host cell DNA.

When the burst time takes an unusually long time.

Attachment of a phage to a cell.

The period during replication when virions are not present.

Lysis of the host cell due to a phage.

Viruses that have reverse transcriptase are in the

Hepadnaviridae and Retroviridae.

Herpesviridae and Retroviridae.

Retroviridae and Picornaviridae.

Generalized transduction differs from specialized transduction in that generalized transduction

Transfers DNA from one cell to another.

Which of the following tends to be more complex in a parasitic helminth than in free-living helminths?

All of these are more complex in a parasitic helminth.

Which of the following statements about helminths is false?

Some have male and female reproductive organs in one animal.

They are multicellular animals.

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

Eliminate the intermediate host

None of these is an effective control.

Which of the following statements is false?

Fungal spores are resting spores to protect the fungus from adverse environmental conditions.

Fungal spores are for reproduction.

Fungal spores are used in identification of fungi.

Which of the following pairs is mismatched?

Deuteromycota - a phylum of fungi

Plasmogamy - union of two haploid cells

Meiosis - cell division resulting in haploid cells

Anamorph - produces asexual spores

Microbiology Ch. 12/13

Authored by Kate Blankenship

Biology

University

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A multicellular organism; the digestive tract has one opening.

Ascomycete

Tapeworm

Plasmodial slime mold

Cellular slime mold

Euglenozoa

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following statements about the Oomycote algae is false?

They form hyphae.

They have chlorophyll.

They reproduce sexually.

They produce zoospores in a sporangium.

They cause plant diseases.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Yeast infections are caused by

Aspergillus.

Penicillium.

Saccharomyces cerevisiae.

Histoplasma.

Candida albicans.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What do tapeworms eat?

Intestinal bacteria

Red blood cells

Intestinal contents

Plant matter

Host tissues

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

Mosquitoes

Fleas

Kissing bugs

Houseflies

Lice

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

Zygomycete fungus.

Green alga.

Tapeworm.

Ascomycete fungus.

Oomycote alga.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a food chain consisting of the following organisms, which acts as a producer?

Slime molds

Fungi

Protozoa

Lichens

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Microbiology Ch. 12/13

A multicellular organism; the digestive tract has one opening.

Which of the following statements about the Oomycote algae is false?

Yeast infections are caused by

What do tapeworms eat?

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

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

In a food chain consisting of the following organisms, which acts as a producer?

The cells of plasmodial slime molds can grow to several centimeters in diameter because

Which stage immediately precedes the adult?

Amoebalike vegetative structures that produce sporangia.

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