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Exam of 67 pages for the course Bio 315 WSU Skeleton 1, Muscles, and Joints Lab Ex at Bio 315 WSU Skeleton 1, Muscles, and Joints Lab Ex (bio 1108 exam 3.)
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bio 1108 exam 3The hydrolytic digestion of which of the following should produce monomers that
are aminated (i.e., have an amine group attached) molecules of β-glucose?
A) insect exoskeleton
B) plant cell walls
C) fungal cell walls
D) Three of these responses are correct.
E) Two of these responses are correct. - CORRECT ANSWER-Two of these
responses are correct.
If all fungi in an environment that perform decomposition were to suddenly die,
then which group of organisms should benefit most, due to the fact that their
fungal competitors have been removed?
A) plants
B) protists
C) prokaryotes
D) animals
E) mutualistic fungi - CORRECT ANSWER-prokaryotes
When a mycelium infiltrates an unexploited source of dead organic matter, what
are most likely to appear within the food source soon thereafter?
A) fungal haustoria
B) soredia
C) fungal enzymes
D) increased oxygen levels
E) larger bacterial populations - CORRECT ANSWER-fungal enzymes
Which of the following is a characteristic of hyphate fungi (fungi featuring
hyphae)?
A) They acquire their nutrients by phagocytosis.
B) Their body plan is a unicellular sphere.
C) Their cell walls consist mainly of cellulose microfibrils.
D) They are adapted for rapid directional growth to new food sources.
E) They reproduce asexually by a process known as budding. - CORRECT
ANSWER-They are adapted for rapid directional growth to new food sources.
,The functional significance of porous septa in certain fungal hyphae is most
similar to that represented by which pair of structures in animal cells and plant
cells, respectively?
A) desmosomestonoplasts
B) gap junctionsplasmodesmata
C) tight junctionsplastids
D) centriolesplastids
E) flagellacentral vacuoles - CORRECT ANSWER-gap junctionsplasmodesmata
What do fungi and arthropods have in common?
A) Both groups are commonly coenocytic.
B) The haploid state is dominant in both groups.
C) Both groups are predominantly heterotrophs that ingest their food.
D) The protective coats of both groups are made of chitin.
E) Both groups have cell walls. - CORRECT ANSWER-The protective coats of
both groups are made of chitin.
In septate fungi, what structures allow cytoplasmic streaming to distribute needed
nutrients, synthesized compounds, and organelles throughout the hyphae?
A) multiple chitinous layers in cross-walls
B) pores in cross-walls
C) complex microtubular cytoskeletons
D) two nuclei
E) tight junctions that form in cross-walls between cells - CORRECT
ANSWER-pores in cross-walls
What accounts most directly for the extremely fast growth of a fungal mycelium?
A) rapid distribution of synthesized proteins by cytoplasmic streaming
B) a long tubular body shape
C) the readily available nutrients from their ingestive mode of nutrition
D) a dikaryotic condition that supplies greater amounts of proteins and nutrients -
CORRECT ANSWER-rapid distribution of synthesized proteins by cytoplasmic
streaming
The vegetative (nutritionally active) bodies of most fungi are
A) composed of hyphae.
,B) referred to as a mycelium.
C) usually underground.
D) Three of these responses are correct.
E) Two of these responses are correct. - CORRECT ANSWER-Three of these
responses are correct.
Both fungus-farming ants and their fungi can synthesize the same structural
polysaccharide from the β-glucose. What is this polysaccharide?
A) amylopectin
B) chitin
C) cellulose
D) lignin
E) glycogen - CORRECT ANSWER-chitin
Consider two hyphae having equal dimensions: one from a septate species and
the other from a coenocytic species. Compared with the septate species, the
coenocytic species should have
A) fewer nuclei.
B) more pores.
C) less chitin.
D) less cytoplasm.
E) reduced cytoplasmic streaming. - CORRECT ANSWER-less chitin
Immediately after karyogamy occurs, which term applies?
A) plasmogamy
B) heterokaryotic
C) dikaryotic
D) diploid - CORRECT ANSWER-diploid
Which description does not apply equally well to both sexual and asexual
spores?
A) have haploid nuclei
B) represent the dispersal stage
C) are produced by meiosis
D) upon germination, will subsequently undergo S phase and mitosis -
CORRECT ANSWER-are produced by meiosis
, Plasmogamy can directly result in which of the following?
1. cells with a single haploid nucleus
2. heterokaryotic cells
3. dikaryotic cells
4. cells with two diploid nuclei
A) 1 or 2
B) 1 or 3
C) 2 or 3
D) 2 or 4
E) 3 or 4 - CORRECT ANSWER-2 or 3
After cytokinesis occurs in budding yeasts, the daughter cell has a
A) smaller nucleus and more cytoplasm than the mother cell.
B) smaller nucleus and less cytoplasm than the mother cell.
C) larger nucleus and less cytoplasm than the mother cell.
D) similar nucleus and less cytoplasm than the mother cell. - CORRECT
ANSWER-similar nucleus and less cytoplasm than the mother cell.
In most fungi, karyogamy does not immediately follow plasmogamy, which
consequently
A) means that sexual reproduction can occur in specialized structures.
B) results in multiple diploid nuclei per cell.
C) allows fungi to reproduce asexually most of the time.
D) results in heterokaryotic or dikaryotic cells.
E) is strong support for the claim that fungi are not truly eukaryotic. - CORRECT
ANSWER-results in heterokaryotic or dikaryotic cells.
If all of their nuclei are equally active transcriptionally, then the cells of both
dikaryotic and heterokaryotic fungi, in terms of the gene products they can make,
are essentially
A) haploid.
B) diploid.
C) alloploid.
D) completely homozygous.
E) completely hemizygous. - CORRECT ANSWER-diploid
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