Question 1

Which molecule would be an indicator of fungal contamination in a drug preparation?

Accepted Answer

A)  Cellulose
B)  Collagen
C)  Chitin
D)  Deoxyribose
E)  LigninF) B) and C)
G) B) and E)

Question 2

The fruiting structures formed by secondary mycelia of basidiomycetes are known as

Accepted Answer

A)  mushrooms.
B)  yeasts.
C)  lichen.
D)  ascocarps.
E)  basidia.F) B) and D)
G) C) and E)

Question 3

Ruminant animals have symbiotic fungi that

Accepted Answer

A)  digest cellulose and lignin.
B)  infect milk-producing glands,fermenting the milk.
C)  produce toxins in muscle tissue.
D)  produce natural antibiotics.E) A) and B)
F) A) and C)

Question 4

What type of symbiotic relationship is exemplified by mycorrhizal fungi?

Accepted Answer

A)  Mutualism
B)  Commensalism
C)  Parasitism
D)  AtavismE) C) and D)
F) All of the above

Question 5

Ectomycorrhizae,associations in which the fungal hyphae surround but do not penetrate the cell walls of the plant roots,usually involve

Accepted Answer

A)  ascomycetes.
B)  basidiomycetes.
C)  zygomycetes.
D)  ascomycetes and basidiomycetes.
E)  ascomycetes and zygomycetes.F) A) and C)
G) A) and B)

Question 6

An ________ is a nonphotosynthetic plant-a third member of a symbiotic relationship involving a fungus and another plant,obtaining nutrients from these two members.

Accepted Answer

The answer of An ________ is a nonphotosynthetic plant-a third...

Question 7

The fungi that cause serious plant disease,such as Dutch elm disease and chestnut blight,belong to the phylum

Accepted Answer

A)  Ascomycota.
B)  Zygomycota.
C)  Imperfect fungi.
D)  Basidiomycota.
E)  Actinomycetes.F) D) and E)
G) All of the above

Question 8

Why is it difficult to treat fungal infections in humans?

Accepted Answer

A)  Fungal cells are eukaryotic
B)  Fungal cells have a chitonous cell wall.
C)  Fungal cells are dikaryotic.
D)  Fungal cells cause chytridiomycosis.E) All of the above
F) A) and D)

Question 9

Why are neocallimastigomycetes being studied for biofuel production?

Accepted Answer

A)  They can ferment glucose into alcohol.
B)  They can release fermentable sugars from structural polysaccharides.
C)  They can generate methane.
D)  They provide energy to power fermentation.
E)  They can extract pollutants from biofuel starting materials.F) None of the above
G) C) and D) B

Question 10

Alexander Fleming kept finding mold contamination that was killing his bacterial cultures.This observation eventually lead to the development of the antibiotic penicillin.Why would a fungus produce a compound that is selectively toxic to bacteria?

Accepted Answer

A)  Fungi eat bacteria.
B)  Fungi are killed by bacterial toxins.
C)  Fungi compete with bacteria for resources.
D)  Killing bacteria is an accident.E) None of the above
F) A) and D)

Question 11

Comparisons of DNA sequences have revealed that glomeromycetes are not in the same clade as the zygomycetes.

Accepted Answer

A) True 
 B)False

Question 12

Mycorrhizae,specialized symbiotic associations between the roots of plants and fungi,are characteristic of

Accepted Answer

A)  all plants.
B)  about 90% of all plants.
C)  about 60% of all plants.
D)  about 40% of all plants.
E)  about 20% of all plants.F) A) and E)
G) All of the above

Question 13

Which gene product would be most useful for distinguishing between a microsporidian and a blastocladiomycete?

Accepted Answer

A)  Rubisco
B)  Chitin
C)  DNA polymerase
D)  Phospholipidase
E)  ATP synthaseF) None of the above
G) C) and D)

Question 14

Fungal hyphae in which two genetically distinct kinds of nuclei occur together are said to be ________.

Accepted Answer

The answer of Fungal hyphae in which two genetically distinct...

Question 15

The carcinogenic compound ________,which damages kidneys and the nervous system,is produced by some strains of Aspergillus flavus.

Accepted Answer

Aflatoxins
Aflatoxin

Question 16

A type of fungi that has been long useful for baking,brewing,and wine making,and is now becoming very important in genetic research is ________.

Accepted Answer

The answer of A type of fungi that has been...

Question 17

Zygospores are used to resist harsh conditions.

Accepted Answer

A) True 
 B)False

Question 18

Fungi are ecologically important for all of the following reasons,except

Accepted Answer

A)  They break down organic materials and return them to the ecosystem.
B)  All can exist in symbiotic relationships.
C)  Some can ferment and produce bread,beer,wine,cheese,and soy sauce.
D)  Some cause diseases in plants and animals.
E)  They can break down lignin.F) A) and B)
G) None of the above

Question 19

Recent phylogenetic analysis has provided evidence to justify classifying microsporidians as fungi.

Accepted Answer

A) True 
 B)False

Question 20

A mycologist visits your biology class and discusses her research on a particular fungus that lives on the bark of damaged spruce trees.She explains that the fungal hyphae of her research organism is heterokaryotic.You raise your hand and request that she define that word.Her correct response is

Accepted Answer

A)  heterokaryotic means that the nuclei of the fungal hyphae are genetically the same.
B)  heterokaryotic means that the nuclei of each compartment of the hyphae are genetically distinct.
C)  heterokaryotic means that each compartment of the hyphae contain two distinct nuclei.
D)  heterokaryotic means that each compartment of the hyphae contains only one nucleus.E) All of the above
F) A) and D) B

Exam 31: Fungi

Which molecule would be an indicator of fungal contamination in a drug preparation?

Correct AnswerverifiedShow Answer

The fruiting structures formed by secondary mycelia of basidiomycetes are known as

Correct AnswerverifiedShow Answer

Ruminant animals have symbiotic fungi that

Correct AnswerverifiedShow Answer

What type of symbiotic relationship is exemplified by mycorrhizal fungi?

Correct AnswerverifiedShow Answer

Ectomycorrhizae,associations in which the fungal hyphae surround but do not penetrate the cell walls of the plant roots,usually involve

Correct AnswerverifiedShow Answer

An ________ is a nonphotosynthetic plant-a third member of a symbiotic relationship involving a fungus and another plant,obtaining nutrients from these two members.

Correct AnswerverifiedShow Answer

The fungi that cause serious plant disease,such as Dutch elm disease and chestnut blight,belong to the phylum

Correct AnswerverifiedShow Answer

Why is it difficult to treat fungal infections in humans?

Correct AnswerverifiedShow Answer

Why are neocallimastigomycetes being studied for biofuel production?

Correct AnswerverifiedB

Alexander Fleming kept finding mold contamination that was killing his bacterial cultures.This observation eventually lead to the development of the antibiotic penicillin.Why would a fungus produce a compound that is selectively toxic to bacteria?

Correct AnswerverifiedShow Answer

Comparisons of DNA sequences have revealed that glomeromycetes are not in the same clade as the zygomycetes.

Correct AnswerverifiedShow Answer

Mycorrhizae,specialized symbiotic associations between the roots of plants and fungi,are characteristic of

Correct AnswerverifiedShow Answer

Which gene product would be most useful for distinguishing between a microsporidian and a blastocladiomycete?

Correct AnswerverifiedShow Answer

Fungal hyphae in which two genetically distinct kinds of nuclei occur together are said to be ________.

Correct AnswerverifiedShow Answer

The carcinogenic compound ________,which damages kidneys and the nervous system,is produced by some strains of Aspergillus flavus.

Correct AnswerverifiedAflatoxins Aflatoxin

A type of fungi that has been long useful for baking,brewing,and wine making,and is now becoming very important in genetic research is ________.

Correct AnswerverifiedShow Answer

Zygospores are used to resist harsh conditions.

Correct AnswerverifiedShow Answer

Fungi are ecologically important for all of the following reasons,except

Correct AnswerverifiedShow Answer

Recent phylogenetic analysis has provided evidence to justify classifying microsporidians as fungi.

Correct AnswerverifiedShow Answer

A mycologist visits your biology class and discusses her research on a particular fungus that lives on the bark of damaged spruce trees.She explains that the fungal hyphae of her research organism is heterokaryotic.You raise your hand and request that she define that word.Her correct response is

Correct AnswerverifiedB

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B

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Aflatoxins Aflatoxin

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B