Quiz 25: Protists
Biology
Q 1Q 1
The simultaneous use of both organic and inorganic forms of carbon is called ________________.
A)osmotrophy
B)omnitrophy
C)mixotrophy
D)metatrophy
Free
Multiple Choice
C
Q 2Q 2
When protists feed on solid nutrients such as bacteria by phagocytosis,they are said to be using ____________ nutrition.
A)saprozoic
B)holozoic
C)endozoic
D)parasitic
Free
Multiple Choice
B
Q 3Q 3
All photosynthetic protists
A)carry out oxygenic photosynthesis using two photosystems.
B)carry out oxygenic photosynthesis using one photosystem.
C)carry out anoxygenic photosynthesis using two photosystems.
D)carry out anoxygenic photosynthesis using one photosystem.
Free
Multiple Choice
A
Q 4Q 4
The study of algae is referred to as
A)phycology.
B)phytology.
C)mycology.
D)None of the choices are correct.
Free
Multiple Choice
Q 5Q 5
Which of the following statements is not true of protists?
A)Moisture is absolutely essential to their existence.
B)Most are free living.
C)They make up a substantial fraction of the marine plankton.
D)They are not known to cause diseases of humans.
Free
Multiple Choice
Q 6Q 6
Which of the following is rare among protists?
A)Motility
B)Multicellular
C)Eukaryotic
D)None of these characteristics are rare among protists.
Free
Multiple Choice
Q 7Q 7
Trypanosomes that cause disease in humans escape destruction by the human immune system because they are resistant to phagocytosis.
Free
True False
Free
True False
Q 9Q 9
Recent evidence suggests that hydrogenosomes and mitochondria evolved from different endosymbiotically derived organelles.
Free
True False
Free
True False
Q 11Q 11
The pellicle of a Euglena cell consists of
A)glycoprotein.
B)polysaccharide.
C)peptidoglycan.
D)protein strips and microtubules.
Free
Multiple Choice
Q 12Q 12
The cellulase-excreting protist that can account for up to one-third of the biomass of a termite is a member of the genus
A)Hexamida.
B)Trichomonas.
C)Trichonympha.
D)Euglena.
Free
Multiple Choice
Q 13Q 13
A typical Euglena cell is elongated and bounded by a _________________
A)protuberance.
B)pellicle.
C)cytoproct.
D)plasmalemma.
Free
Multiple Choice
Q 14Q 14
Which of the following is found in the intestine of termites and produces enzymes needed to digest wood particles?
A)Giardia
B)Trichomonas
C)Trichonymphida
D)Nyctotherus
Free
Multiple Choice
Q 15Q 15
Which of the following is a unique organelle found within some protists but not in higher animal cells?
A)Mitochondrion
B)Contractile vacuole
C)Golgi apparatus
D)Endoplasmic reticulum
Free
Multiple Choice
Q 16Q 16
The most common method of asexual reproduction in protists is
A)budding.
B)cytokinesis.
C)fission.
D)fragmentation.
Free
Multiple Choice
Q 17Q 17
Some anaerobic protists obtain energy using
A)mitochondria.
B)cytochromes.
C)hydrogenosomes.
D)All of the choices are correct.
Free
Multiple Choice
Q 18Q 18
Pigment is contained in an eyespot or __________ that helps certain organisms orient to light.
Free
Short Answer
Free
Short Answer
Q 20Q 20
Sexual reproduction in the cellular slime mold Dictyostelium discoideum involves the production of special spores called
A)amoeba flagellates.
B)macrocysts.
C)sporozoites.
D)discoidia.
Free
Multiple Choice
Q 21Q 21
Which of the following is not true regarding Entamoeba histolytica?
A)Entamoeba histolytica always remains in the intestinal tract during an infection.
B)Entamoeba histolytica cysts pass through the stomach unharmed.
C)Entamoeba histolytica grazes on bacteria in the intestines.
D)Entamoeba histolytica produces enzymes that degrade epithelial tissue.
Free
Multiple Choice
Q 22Q 22
Which of the following is not a type of pseudopod found in protozoa?
A)Lobopodia
B)Peripodia
C)Reticulopodia
D)Filopodia
Free
Multiple Choice
Q 23Q 23
A cyst formed by a protist functions
A)as a protective mechanism against adverse changes in the environment.
B)in repair of damage to the cell envelope.
C)in transfer from one host to the next.
D)as a protective mechanism against adverse changes in the environment and in transfer from one host to the next.
Free
Multiple Choice
Q 24Q 24
Foraminifera are a type of protist that
A)help in estimating the age of ocean deposits.
B)move by means of flagella.
C)cause malaria.
D)are associated with human disease.
Free
Multiple Choice
Q 25Q 25
Filopodia supported by microtubules that are used primarily in feeding are called __________________.
A)lobopodia
B)reticulopodia
C)axopodia
D)micropodia
Free
Multiple Choice
Q 26Q 26
Most radiolaria have an internal skeleton made of
A)microtubules.
B)glycoproteins.
C)cellulose.
D)siliceous material.
Free
Multiple Choice
Q 27Q 27
Protist cells that produce gametes for sexual reproduction are most specifically called ___________.
Free
Short Answer
Q 28Q 28
__________ from foraminifera make up the White Cliffs of Dover and the stones used to build the great pyramids.
Free
Short Answer
Free
Short Answer
Free
True False
Q 31Q 31
Species of dinoflagellates are responsible for much of the phosphorescence seen in ocean waters at night.
Free
True False
Q 32Q 32
The Stramenopila are a very large and diverse group that all possess __________ at some point in their life cycle.
A)a macronucleus
B)chloroplasts
C)an exoskeleton
D)heterokont flagella
Free
Multiple Choice
Q 33Q 33
Some ciliophora can discharge toxic threadlike darts called ___________,which are used in capturing prey.
A)spikes
B)spicules
C)toxicysts
D)toxipodia
Free
Multiple Choice
Q 34Q 34
A protist with two flagella where one is wrapped around a transverse groove and the other is draped in a longitudinal groove would be a member of which group?
A)Ciliophora
B)Dinoflagellate
C)Trypanosome
D)Oomycetes
Free
Multiple Choice
Q 35Q 35
Apicomplexan organisms such as Plasmodium possess a motile,infective stage called the _____________.
A)sporozoite
B)trophozoite
C)apizoite
D)None of the choices are correct.
Free
Multiple Choice
Q 36Q 36
Which of the following groups is responsible for toxic red tides?
A)Dinoflagellates
B)Diatoms
C)Trypanosomes
D)Foraminifera
Free
Multiple Choice
Q 37Q 37
Diatoms
A)are photosynthetic with frustules composed of two halves.
B)can reproduce asexually.
C)are motile by virtue of having flagella.
D)are photosynthetic with frustules composed of two halves and can reproduce asexually.
Free
Multiple Choice
Q 38Q 38
Those dinoflagellates that live in an intimate association with corals are called
A)zooxanthellae.
B)parasites.
C)lichens.
D)phytoplankton.
Free
Multiple Choice
Q 39Q 39
In labyrinthulids,the nonflagellated stage of the life cycle features spindle-shaped cells that form complex colonies that glide rapidly along an ______________ net made by the organism.
A)ectoplasmic
B)endoplasmic
C)protoplasmic
D)pellicular
Free
Multiple Choice
Q 40Q 40
Ciliate sexual reproduction by conjugation differs from sexual reproduction in most animals in that
A)both parents are converted into zygotes.
B)meiosis occurs in both partners.
C)cell fusion occurs during fertilization.
D)the zygotic nucleus is diploid.
Free
Multiple Choice
Q 41Q 41
Which of the following ciliates produces the disease ick in fish?
A)Entodinium
B)Nyctotherus
C)Ichthyophthirius
D)Balantidium
Free
Multiple Choice
Q 42Q 42
Which of the following apicomplexan genera cause coccidiosis in chickens?
A)Pneumocystis
B)Eimeria
C)Plasmodium
D)Toxoplasma
Free
Multiple Choice
Q 43Q 43
The apical complex in the apicomplexans
A)is located at one end of the cell.
B)aids in penetration of host cells.
C)contains mitochondria.
D)is located at one end of the cell and aids in penetration of host cells.
Free
Multiple Choice
Q 44Q 44
Protothecosis is an infection of humans or animals that is caused by a chlorophyte (green algae).
Free
True False
Q 45Q 45
The Chloroplastida (green algae)include a wide diversity of forms ranging from unicellular to colonial individuals.
Free
True False
Q 46Q 46
If plants originated from an organism like Chlamydomonas,then the origin of plants involved the loss of
A)chloroplasts.
B)microtubules.
C)cell walls.
D)flagella.
Free
Multiple Choice
Q 47Q 47
Which of the following is not true of the Chloroplastida (green algae)?
A)Their cell walls contain chitin.
B)They are found in fresh and salt water.
C)They have chlorophylls a and b.
D)They store carbohydrates as starch.
Free
Multiple Choice
Q 48Q 48
Upon ingestion of a food particle by a protozoan,the food particle is in a/an
A)lysosome.
B)mitochondrion.
C)phagocytic vacuole.
D)endoplasmic reticulum.
Free
Multiple Choice
Q 49Q 49
After ingestion of a food particle,pH changes and enzymes contributed by the ________________ will digest and hydrolyze the ingested particle in the phagocytic vacuole.
A)mitochondria
B)lysosome
C)plasma membrane
D)endoplasmic reticulum
Free
Multiple Choice
Q 50Q 50
Which of the following would inhibit binary fission in protists,but not in bacteria?
A)Blocking DNA replication
B)Blocking RNA synthesis
C)Blocking spindle function
D)Blocking ribosome function
Free
Multiple Choice
Q 51Q 51
Sexual reproduction in protists involves diverse strategies.Which of the following is common to all types of sexual reproduction in protists?
A)Syngamy
B)Isogamy
C)Heterogamy
D)Anisogamy
E)Conjugation
Free
Multiple Choice
Q 52Q 52
Which of the following statements best describes the difference between mitosomes and mitochondria?
A)Mitosomes have one membrane whereas mitochondria have a double membrane.
B)Mitosomes are not involved in ATP production.
C)Mitosomes are much larger than mitochondria.
D)Mitosomes contain hydrolytic enzymes that help the protozoan digest food particles.
Free
Multiple Choice
Q 53Q 53
In which of the following locations would you be most likely to find a species of Euglena?
A)Rumen of a dairy cow
B)Intestine of humans
C)Pond
D)Garden soil
Free
Multiple Choice
Q 54Q 54
If a population of termites were treated with a chemical that destroyed all of the trichonymphids living in their gut,what would be the most likely consequence?
A)The individual termites would grow to be much larger.
B)The termites would die because they would not be able to digest cellulose in wood.
C)The termites would be able reproduce more rapidly and their population would expand.
D)The termites would turn to alternative sources of nutrients.
Free
Multiple Choice
Q 55Q 55
Trichomoniasis in humans is caused by a member of the _____________ group of protists.
A)Fornicata
B)Parabasalia
C)Euglenozoa
D)Amoebozoa
Free
Multiple Choice
Free
Short Answer
Q 57Q 57
You're describing a newly discovered protozoa that has long filamentous pseudopods.Which term best fits these pseudopods?
A)Lobopods
B)Hyphopods
C)Reticulopods
D)Filopods
Free
Multiple Choice
Q 58Q 58
What is the most likely role of the tests in a testate amoeba?
A)Provide motility
B)Concentrate nutrients
C)Provide protection
D)Enable adherence to surfaces
Free
Multiple Choice
Q 59Q 59
Some amoebae have a covering over their plasma membrane.These amoebae are referred to as ____________ amoebae.
Free
Short Answer
Q 60Q 60
What conditions result in the release of cAMP from Dictyostelium discoideum?
A)Abundance of nutrients
B)Adequate moisture
C)Shortage of nutrients
D)Presence of predator bacteria
Free
Multiple Choice
Q 61Q 61
What are the results of the release of cAMP from Dictyostelium discoideum?
A)The cells develop flagella.
B)The cells form cysts until the growing conditions improve.
C)The larger cells cannibalize the smaller,less developed cells.
D)Cells aggregate,forming a large motile multicellular slug,precursor to the development of a fruiting body.
Free
Multiple Choice
Q 62Q 62
Which would be the??? most likely location to find a slime mold?
A)Swiftly running stream
B)Animal gastrointestinal tract
C)Pond
D)Rotting log
Free
Multiple Choice
Free
True False
Q 64Q 64
Filopodia that are supported by microtubules are known as
A)axopodia.
B)lophopodia.
C)micropodia.
D)reticulopodia.
E)tubulopodia.
Free
Multiple Choice
Q 65Q 65
Which statement about the macronucleus and the micronucleus of ciliates is correct?
A)The micronucleus transmits genetic information through mitosis and meiosis,while the macronucleus maintains routine cellular functions.
B)The macronucleus is diploid and the micronucleus is haploid.
C)The micronucleus is formed by fission of the macronucleus.
D)The macronucleus forms by the fusion of micronuclei from two different mating types.
Free
Multiple Choice
Q 66Q 66
What is the role of the apical complex in apicomplexans?
A)The apical complex is a motility structure that enables cell movement.
B)The apical complex enables the apicomplexan to penetrate and bore into a host cell.
C)The apical complex is a feeding structure through which small food particles are taken in.
D)The apical complex is a defensive structure that is used to destroy bacteria.
Free
Multiple Choice
Q 67Q 67
All of the following are true statements about events that occur in the apicomplexan life cycle EXCEPT
A)The life cycles include both sexual and asexual stages.
B)The sporozoite is the motile infective stage.
C)Often two completely different organisms host different stages of the life cycle.
D)The haploid and diploid generations alternate.
E)There is no exception here.All of these statements are true.
Free
Multiple Choice
Q 68Q 68
The stramenopiles are an extremely diverse group of organisms which would appear to have very little in common with one another.The one unifying feature in this group is the presence of _________________ ________________ at some point in the life cycle.
Free
Short Answer
Q 69Q 69
What is the most likely reason the peronsporomycetes were originally thought to be fungi?
A)Macroscopic appearance of fuzzy growth
B)Cell wall composition
C)Yeast like cellular morphology
D)Life cycle similar to that of many fungi
Free
Multiple Choice
Q 70Q 70
Which of the following morphologies are seen among the Chloroplastida?
A)Filamentous
B)Unicellular
C)Colonial
D)Sheet-like
E)All of the choices are correct.
Free
Multiple Choice
Q 71Q 71
All of these statements about Chlamydomonas are true,EXCEPT
A)chlamydomonas only reproduces asexually.
B)chlamydomonas has two flagella.
C)each motile Chlamydomonas cell has a single haploid nucleus.
D)chlamydomonas is photoautotrophic.
Free
Multiple Choice