Chapter 4

Protists with contractile vacuoles

Histones are

When buds remain attached, they form a chain of yeast cells called

Which organelle contains cristae where enzymes and electron carriers for aerobic respiration are found?

The site for ribosomal RNA synthesis is the

Which organelle is found in algae but not found in protozoa or fungi?

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

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?

The group of protozoa that use pseudopodia to move are the

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.

Chitin is a chemical component of the cell walls of: protozoa. algae. fungi. bacteria. All of the choices are correct.

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

The motile, feeding stage of protozoa is called the: trophozoite. cyst. sporozoite. oocyst. food vacuole.

The group of protozoa that have flagella are the: sarcodina. ciliophora. mastigophora. apicomplexa. None of the choices is correct.

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.

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.

The long, threadlike branching cells of molds are called: conidiophores. pseudohyphae. hyphae. septate. ascus.

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.

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.

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.

During unfavorable growth conditions, many protozoa can convert to a resistant, dormant stage called a(n) endospore. cyst. seed. trophozoite. sporozoa.

Fungal infections are known as ________ and can be acquired from environmental or clinical sources. secondary infections vegetative infections mycoses saprobic infections parasitoses

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

Adulthood and mating of helminths occur in which host? primary host secondary host definitive host transport host Mating takes place in all hosts.

Cilia are structures for motility found primarily in 2-1-13: protozoa. algae. fungi. bacteria. All of the choices are correct.

The size of a eukaryotic cell ribosome is 30S. 40S. 50S. 70S. 80S.

Filamentous fungi are called: pseudohyphae. septa. molds. dimorphic. mycelium.

Which organelle contains cristae where enzymes and electron carriers for aerobic respiration are found? mitochondria lysosomes Golgi apparatus chloroplasts endoplasmic reticulum

The woven, intertwining mass of hyphae that makes up the body of a mold is a(n): septum. rhizoid. spore. bud. mycelium.

Cell walls are not usually found in: protozoa. algae. fungi. bacteria. All of the choices are correct.

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

The long, threadlike branching cells of molds are called: conidiophores. pseudohyphae. hyphae. septate. ascus.

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

Protists include: yeasts and molds. algae and protozoa. helminths. All of the choices are correct. None of the choices is correct.

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

All of the following are helminths except: pinworms. flukes. trypanosomes. roundworms. tapeworms.

The group of protozoa that have flagella are the: sarcodina. ciliophora. mastigophora. apicomplexa. None of the choices is correct.

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.

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

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.

The group of protozoa that use pseudopodia to move are the: sarcodina. ciliophora. mastigophora. apicomplexa. None of the choices is correct.

All of the following are helminths except: tapeworms. flukes. flatworms. roundworms. All of the choices are helminths.

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.

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.

The site for ribosomal RNA synthesis is the: ribosome. nucleolus. nucleus. Golgi apparatus. lysosome.

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

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.

Mitochondria possess all of the following except: enzymes for metabolism. cristae. electron transport chain proteins. enzymes for photosynthesis. 70S ribosomes (prokaryote).

Cilia are structures for motility found primarily in: 2-1-13 protozoa. algae. fungi. bacteria. All of the choices are correct.

Protozoan endoplasm contains: ectoplasm. mitochondria. flagella. oral groves. None of the choices is correct.

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

In humans, helminths generally infect the: digestive tract. urinary tract. nervous system. muscular system. skin.

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

Fungal infections are known as ________ and can be acquired from environmental or clinical sources. secondary infections vegetative infections mycoses saprobic infections parasitoses

Larval development of helminths occurs in which host? primary host intermediate (secondary) host definitive host transport host Mating takes place in all hosts.

The cell's series of tunnel-like membranes functioning in transport and storage are the: mitochondria. lysosomes. Golgi apparatus. chloroplasts. endoplasmic reticulum.

The group of protozoa that have gliding motility are the: amoeba/sarcodina. ciliophora. mastigophora. apicomplexa/sporozoa. None of the choices is correct.

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

The motile, feeding stage of protozoa is called the: trophozoite. cyst. sporozoite. oocyst. food vacuole.

When buds remain attached, they form a chain of yeast cells called: pseudohyphae. septa. molds. dimorphic. mycelium.

Filamentous fungi are called: pseudohyphae. septa. molds. dimorphic. mycelium.

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.

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.

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

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.

Cilia are structures for motility found primarily in: 2-1-13 protozoa. algae. fungi. bacteria. All of the choices are correct.

All of the following are helminths except: pinworms. flukes. trypanosomes. roundworms. tapeworms.

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.

Mitochondria possess all of the following except: enzymes for metabolism. cristae. electron transport chain proteins. enzymes for photosynthesis. 70S ribosomes (prokaryote).

All of the following are helminths except: tapeworms. flukes. flatworms. roundworms. All of the choices are helminths.

Adulthood and mating of helminths occur in which host? primary host secondary host definitive host transport host Mating takes place in all hosts.

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.

During unfavorable growth conditions, many protozoa can convert to a resistant, dormant stage called a(n) endospore. cyst. seed. trophozoite. sporozoa.

The group of protozoa that use pseudopodia to move are the: sarcodina. ciliophora. mastigophora. apicomplexa. None of the choices is correct.

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.