4
Protists include: yeasts and molds. algae and protozoa. helminths. All of the choices are correct. None of the choices is correct.
algae and protozoa.
The group of protozoa that have gliding motility are the: amoeba/sarcodina. ciliophora. mastigophora. apicomplexa/sporozoa. None of the choices is correct.
apicomplexa/sporozoa.
Protozoan cysts: are part of all protozoan life cycles. are necessary for transmission to a new host. are helpful in surviving unfavorable conditions. are the primary form of replication. All of the choices are correct.
are helpful in surviving unfavorable conditions.
Which organelle is found in algae but not found in protozoa or fungi?
chloroplast
When a eukaryotic cell is not undergoing mitosis, the DNA and its associated proteins appear as a visible network of dark fibers called the: nuclear envelope. nucleosome. nucleolus. nucleoplasm. chromatin.
chromatin
When a eukaryotic cell is not undergoing mitosis, the DNA and its associated proteins appear as a visible network of dark fibers called the: nuclear envelope. nucleosome. nucleolus. nucleoplasm. chromatin.
chromatin.
Eukaryotic flagella differ from bacterial flagella because only eukaryotic flagella: are used for cell motility. facilitate chemotaxis. facilitate phototaxis. are long, whiplike structures. contain microtubules.
contain microtubules.
Mitochondria possess all of the following except: enzymes for metabolism. cristae. electron transport chain proteins. enzymes for photosynthesis. 70S ribosomes (prokaryote).
enzymes for photosynthesis
Mitochondria possess all of the following except: enzymes for metabolism. cristae. electron transport chain proteins. enzymes for photosynthesis. 70S ribosomes (prokaryote).
enzymes for photosynthesis.
Cell walls are not usually found in: protozoa. algae. fungi. bacteria. All of the choices are correct.
protozoa
Cilia are structures for motility found primarily in 2-1-13: protozoa. algae. fungi. bacteria. All of the choices are correct.
protozoa
Cilia are structures for motility found primarily in: 2-1-13 protozoa. algae. fungi. bacteria. All of the choices are correct.
protozoa
All of the following are helminths except: pinworms. flukes. trypanosomes. roundworms. tapeworms.
trypanosomes.
Protists with contractile vacuoles
use them to expel excess water from the cell.
Protists with contractile vacuoles: are algae. use them to expel excess water from the cell. typically live in salty seawater. use them for motility. All of the choices are correct.
use them to expel excess water from the cell.
The size of a eukaryotic cell ribosome is 30S. 40S. 50S. 70S. 80S.
80s.
The cytoskeleton: a. anchors organelles. b. provides support. c. functions in movements of the cytoplasm. d. helps maintain cell shape. e. All of the choices are correct.
All of the choices are correct.
Which of the following is found in eukaryotic cells but not in the cells of bacteria? nucleus mitochondria endoplasmic reticulum lysosomes All of the choices are correct.
All of the choices are correct.
All of the following are helminths except: tapeworms. flukes. flatworms. roundworms. All of the choices are helminths.
All of the choices are helminths.
An organelle that is a stack of flattened, membranous sacs and functions to receive, modify, and package proteins for cell secretion is the: mitochondria. lysosome. Golgi apparatus. chloroplast. endoplasmic reticulum.
Golgi apparatus.
After returning from a trip to Africa, Tom begins to feel very tired and weak. He has severe anemia. A blood smear reveals a protozoan is present in his blood. The health care provider tells Tom he has malaria. Which of the following could be the causative agent of his disease?
Plasmodium falciparum
After returning from a trip to Africa, Tom begins to feel very tired and weak. He has severe anemia. A blood smear reveals a protozoan is present in his blood. The health care provider tells Tom he has malaria. Which of the following could be the causative agent of his disease? HIV Nagleria fowleri Plasmodium falciparum Trichophyton Histoplasma capsulatum
Plasmodium falciparum
All of the following are found in some or all protozoa except: motility. ectoplasm and endoplasm. heterotrophic nutrition. formation of a cyst stage. cell wall.
cell wall
During unfavorable growth conditions, many protozoa can convert to a resistant, dormant stage called a(n) endospore. cyst. seed. trophozoite. sporozoa.
cyst
In eukaryotic cells, ribosomes have two locations: scattered in the _____ and on the surface of the _____. cytoplasm, Golgi apparatus nucleus, Golgi apparatus cytoplasm, endoplasmic reticulum nucleus, endoplasmic reticulum
cytoplasm, endoplasmic reticulum
Adulthood and mating of helminths occur in which host? primary host secondary host definitive host transport host Mating takes place in all hosts.
definitive host
In humans, helminths generally infect the: digestive tract. urinary tract. nervous system. muscular system. skin.
digestive tract
The cell's series of tunnel-like membranes functioning in transport and storage are the: mitochondria. lysosomes. Golgi apparatus. chloroplasts. endoplasmic reticulum.
endoplasmic reticulum.
Chitin is a chemical component of the cell walls of: protozoa. algae. fungi. bacteria. All of the choices are correct.
fungi
The long, threadlike branching cells of molds are called: conidiophores. pseudohyphae. hyphae. septate. ascus.
hyphae
The long, threadlike branching cells of molds are called: conidiophores. pseudohyphae. hyphae. septate. ascus.
hyphae.
Which of the following does not pertain to helminths? in kingdom Protista parasitic worms eggs and sperm used for reproduction often alternate hosts in complex life cycles have various organ systems
in kingdom Protista
Larval development of helminths occurs in which host? primary host intermediate (secondary) host definitive host transport host Mating takes place in all hosts.
intermediate (secondary) host
A(n) _____ originates from the Golgi apparatus as one type of vesicle that contains a variety of enzymes for intracellular digestion. perixosome lysosome magnetosome inclusion ribosome
lysosome
Which of the following is not true of the cytoskeleton? structural framework for the cell anchor points for organelles made up of microfilaments made up of microtubules made up of cilia
made up of cilia
The group of protozoa that have flagella are the: sarcodina. ciliophora. mastigophora. apicomplexa. None of the choices is correct.
mastigophora
The group of protozoa that have flagella are the: sarcodina. ciliophora. mastigophora. apicomplexa. None of the choices is correct.
mastigophora.
There are nine peripheral pairs and one central pair of _____ found inside eukaryotic flagella and cilia. filaments microtubules flagella cilia None of the choices is correct.
microtubules
Which organelle contains cristae where enzymes and electron carriers for aerobic respiration are found?
mitochondria
Which organelle contains cristae where enzymes and electron carriers for aerobic respiration are found? mitochondria lysosomes Golgi apparatus chloroplasts endoplasmic reticulum
mitochondria
Protozoan endoplasm contains: ectoplasm. mitochondria. flagella. oral groves. None of the choices is correct.
mitochondria.
Filamentous fungi are called: pseudohyphae. septa. molds. dimorphic. mycelium.
molds
Filamentous fungi are called: pseudohyphae. septa. molds. dimorphic. mycelium.
molds.
The eukaryotic cell's glycocalyx is: mostly polysaccharide. the site where many metabolic reactions occur. also called the cell wall. composed of lipids. protection against osmotic lysis.
mostly polysaccharide.
Which of the following is not a function of the eukaryote glycocalyx? protection adherence movement reception of chemical signals All of the choices are functions.
movement
The woven, intertwining mass of hyphae that makes up the body of a mold is a(n): septum. rhizoid. spore. bud. mycelium.
mycelium.
Fungal infections are known as ________ and can be acquired from environmental or clinical sources. secondary infections vegetative infections mycoses saprobic infections parasitoses
mycoses
The site for ribosomal RNA synthesis is the
nucleolus
The site for ribosomal RNA synthesis is the: ribosome. nucleolus. nucleus. Golgi apparatus. lysosome.
nucleolus.
Which is not a characteristic of fungi? have cell walls photosynthetic include single-celled and filamentous forms heterotrophic nutrition can use a wide variety of nutrients
photosynthetic
The passageways in the nuclear envelope for movement of substances to and from the nucleus and cytoplasm are called nuclear: histones. chromatin. pores. endoplasmic reticulum. inclusions.
pores
The passageways in the nuclear envelope for movement of substances to and from the nucleus and cytoplasm are called nuclear: histones. chromatin. pores. endoplasmic reticulum. inclusions.
pores.
Histones are
proteins associated with DNA in the nucleus.
Histones are: found in polyribosomes. enzymes found in lysosomes. proteins of the cytoskeleton. proteins associated with DNA in the nucleus. on the surface of rough endoplasmic reticulum.
proteins associated with DNA in the nucleus.
When buds remain attached, they form a chain of yeast cells called
pseudohyphae.
When buds remain attached, they form a chain of yeast cells called: pseudohyphae. septa. molds. dimorphic. mycelium.
pseudohyphae.
The group of protozoa that use pseudopodia to move are the: sarcodina. ciliophora. mastigophora. apicomplexa. None of the choices is correct.
sarcodina
The group of protozoa that use pseudopodia to move are the
sarcodina.
The motile, feeding stage of protozoa is called the: trophozoite. cyst. sporozoite. oocyst. food vacuole.
trophozoite.
All of the following are helminths except: pinworms. flukes. trypanosomes. roundworms. tapeworms.
trypanosomes