quiz 2-18-14

Question 1

what is the scientific name for the yeast causative agent, that causes thrush?

Answer 1

Candida albicans

Question 2

what is the genius name for the fungus responsible for athlete’s foot and ring worm?

Answer 2

Tinea

Question 3

name a beneficial product of funguses

Answer 3

cheese, bread, alcoholic beverages, antibiotics

Question 4

how are fungi agriculturally important?

Answer 4

they control nematodes and have a symbiotic relationship with plants

Question 5

how are fungi environmentally important?

Answer 5

they are decomposers and have the ability to degrade and recycle complex organic molecules that would other wise never breakdown

Question 6

what type of cells are fungi?

Answer 6

Eukaryotic cells

Question 7

fungi that can exist in two forms, either molds or yeasts are known as what?

Answer 7

dimorphism

Question 8

what type of fungus are single cells?

Answer 8

yeasts

Question 9

what type of fungus is multicellular?

Answer 9

molds

Question 10

what is the filamentous strands called

Answer 10

hypha (singular) hyphae (plural)

Question 11

what are fungus cell walls made of?

Answer 11

chitin

Question 12

how are hyphae classified?

Answer 12

they are classified by either having cell walls ( septate) or not having cell walls (aseptate)

Question 13

can fungi perform photosynthesis?

Answer 13

no they are not plants

Question 14

where do fungi obtain their nutrients?

Answer 14

the obtain them from their environment. they secrete digestive enzymes into their surroundings

Question 15

how do fungi reproduce?

Answer 15

sexually and asexually

Question 16

how are zygospores formed?

Answer 16

when a haploid gamete of a + strand fuses with a haploid gamete of a - strand.

Question 17

what is the asexual reproductive hyphae of the Zygomycota called?

Answer 17

sporangiophores

Question 18

what is the fruiting body at the tip of the sporangiophore called?

Answer 18

sporangium

Question 19

what is the sexual spore of the Zygomycota called?

Answer 19

zygospore

Question 20

what is the asexual hyphae of the ascomycetes called?

Answer 20

conidiophore

Question 21

what is the asexual spore of the ascomycetes called?

Answer 21

conidiospores

Question 22

how do yeast reproduce?

Answer 22

asexually by budding

Question 23

what is the long strands on the budding yeast cells called

Answer 23

pseudohyphae. the + and - pseudohyphae unite to form an ascus

Question 24

how does the spores in the ascus get released?

Answer 24

the mature and ruptures to release its offspring

Question 25

why is the simple stain used to view bacteria?

Answer 25

it is useful for observing morphology or shape, the size and arrangement of the cells

Question 26

why is a wet mount used?

Answer 26

to view microorganisms as near to their natural state as possible

Question 27

what is an advantage to using a wet mount?

Answer 27

quick and easy to make

Question 28

what is a disadvantage to using a wet mount?

Answer 28

1. the cover glass can damage larger cells, 2. the slide is very susceptible to drying 3. can contaminate the handler's fingers.

Question 29

which method of slide preparation uses a concave slide?

Answer 29

hanging drop method

Question 30

what is a more permanent mount for long-term study

Answer 30

fixed stain smears

Question 31

what type of dye has a positive charge

Answer 31

basic dyes ( cationic dyes)

Question 32

what type of dye has a negative charge

Answer 32

acidic dyes ( anionic dyes)

Question 33

which stain sticks to the cells and gives them color?

Answer 33

the positive stain

Question 34

which stain does not stick to the cells and dries its outer boundary, forming a silhouette?

Answer 34

the negative stain

Question 35

what is the advantages of a negative stain?

Answer 35

it is simple, reduces shrinkage or distortion of the cells and is not heat fixed

Question 36

what is the staining process called when you are using two different colored dyes?

Answer 36

differential stain

Question 37

what are the two stains called in a differential stain?

Answer 37

the primary dye and the counterstain

Question 38

what color does the gram + cells become after a Gram staining?

Answer 38

purple

Question 39

what color does the gram - cells become after a Gram staining?

Answer 39

red

Question 40

what color does the acid-fast bacteria become after an acid fast stain?

Answer 40

pink

Question 41

what color does the non-acid fast bacteria become after an acid fast stain?

Answer 41

blue

Question 42

what is the stain designed to distinguish between spores and a vegetative cells that make them

Answer 42

and endospore stain

Question 43

what is an orderly arrangement of organisms into groups that indicate evolutionary relationships and history?

Answer 43

classification

Question 44

what it the system of assigning names to the various taxonomic rankings of each microbial species

Answer 44

nomenclature

Question 45

what is the process of determining and recording the traits of organisms in order to trace their exact identity and placement in taxonomy?

Answer 45

identification

Question 46

the main taxa or groups in a classification scheme are organized into several descending ranks called?

Answer 46

a hierarchy

Question 47

the scientific name also known as the?

Answer 47

specific epithet

Question 48

what type of fungi are classified as those that consume dead and decomposing organic material?

Answer 48

saprobe

Question 49

what type of fungi are classified as those that live off of living organisms?

Answer 49

parasite

Question 50

what is the most common sexual spores

Answer 50

zygospores, ascospores, and basidiospores

Question 51

what are the two subtypes of asexual spores?

Answer 51

sporangiospores and conidia