Micro Bio Chp 12 Exam 2
The fusion of two gametes produces a
zygote
Replication of the DNA occurs during
inerphase
Sister chromatids separate and move toward the poles of the cell during ____ of mitosis.
anaphase
An aligned pair of homologous chromosomes is called a
tetrad
Which of the following pairs is Mismatched?
fungi; usually diploid
Sister chromatids separate during _____ of meiosis.
anaphase II
Which of the following statements regarding meiosis is most accurate?
a diploid cell produces haploid daughter cells
Merozpoites are a result of
schizogony
Which of the following pairs is Mismatched
Plasmodium; merozoites
Which of the following is a protozoan stage that allows for transmission of intestinal parasites from one host to another?
cyst
Single-celled eukaryotes lacking a cell wall are
protozoa
The _____ is the entire interwoven mass of one multicellular fungal organism.
mycelium
Which of the following is classified among the Alveolates?
paramecium and plasmodium
A single celled eukaryote that is both photosynthetic and a chemoheterotroph is an
euglenid
Which of the following is a protozoan with two nuclei and no mitochondria?
Giardia
Protozoa that have a single large mitochondrion and are found living in animals are
kinetoplastids
Which of the following types of protozoa contribute to limestone formation in their fossilized state?
foraminiferans
The asexual spores of molds are classified according to their
mode of development
Which of the following is a cell type associated with sexual reproduction in fungi?
dikaryon
Fungal spores produced asexually within a sac-like chamber at the tip of a hypha are called
sporangiospores
Parasitology is the study of
both helminths and protozoa
Which of the following is a dinoflagellate whose toxin causes possible estuary-associated syndrome (PEAS)?
Pfiesteria
The large seaweed known as kelp is classified as a member of the
phaeophyta
Hyphae are associated with which of the following?
molds
Septate fungi are classified as
zygomycota
Lichens are composed of a symbiosis of fungi and which of the following?
cyanobacteria or green algae
A plasmodium is a coenocytic structure associated with
slime molds
The division Basidiomycota includes which of the following types of fungi?
mushrooms
Which of the following organisms are directly beneficial to vascular plants?
mycorrhizae
Which of the following protozoa general helps termites digest wood?
Trichonympha
In a cell that has a diploid humber of 8 chromosomes, how many chromatids will be present at the beginning of mitosis?
16
Which of the following is associated with meiosis but not with mitosis?
a tetrad
Which of the following would be virtually indistinguishable under the microscope?
late anaphase and early telophase
When mitosis occurs without cytokinesis which of the following is produced?
coenocytes
The chromatids move toward opposite poles during _______ of mitosis.
anaphase
Multiple mitoses followed by a single cytokinetic event is known as
schizogony
The chromosomes line up in the middle of the cell during
metaphase
The process in which the cytoplasm is divided between daughter cells is known as
cytokinesis
Which process is represented in this figure?
meiosis
Single celled algae that are major producers of oxygen and whose cell walls are useful in a variety of products for humans are the
diatoms
Simple eukaryotes that carry out oxygenic photosynthesis and reproduce by means of alternation of generations are known as
algae
Single-celled organisms called ciliates are
protozoa
Fungi called Deuteromycetes are not known to reproduce sexually. Nonetheless, most of them are considered members of the _____ on the basis of genetic sequences.
Ascomycota
Multicellular organisms with hard exoskeletons segmented bodies and four pairs of jointed legs in the adult stage are
arachnids
The fever and chills associated with malaria are due to the release of uninucleate daughter cells of Plasmodium called (merozoites/ schizonts/ coencytes).
merozoites
The vegetative stage of a protozoan is called a (cyst/ merozoite/ trophozoite).
trophozoite
The (fungi/ algae/ lichens) are so sensitive to pollutants they are used as indicators of environmental conditions.
lichens
Protozoa that move and feed by the use of fine threadlike pseudopodia are called (rhizaria/ amoebozoa/ apicomplexa).
rhizaria
The (dinoflagellates/ radiolarian) are protozoa that produce cell walls composed of silica.
radiolarian
The asexual reproductive spores produced at the tips of hyphae and are not enclosed in a sac are (conidiospores/ ascospores/ sporangiospores)
conidiospores
Fungi and insects both use the nitrogenous polysaccharide (cellulose/ chitin/ silica) as a protective molecule in their outer surfaces.
chitin
Water molds differ from true fungi in having (diploid/ haploid) bodies.
diploid
Modified hyphae that allow fungi to derive nutrients from other living organisms are (septate/ pseudohyphae/ haustoria).
haustoria
The plague is transmitted by (fleas/ticks/lice/mites)
fleas
Lichens spread to new areas by the use of multicellular fragments called (spores/ soredia/ thalli).
soredia
Multicellular algae often reproduce sexually by means of haploid and diploid individuals in a process called (separation/alternation) of generations.
alternation
Microbiologists interested in parasitism study multicellular parasitic (insects/fungi/worms) as well as single-celled protozoa.
worms
Sexual reproduction in unicellular algae is accomplished by the cell acting as a (gamete/spore/ zygote).
gamete
Ticks, lice, and mosquitoes often serve as (carriers/vectors) by hosting and transmitting pathogenic microbes.
vectors