Chapter 5 on microbiology

Algae and protozoa
Protists include
Mitochondria
The eukaryotic cell organelle that most resembles a bacterial cell is the
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Spirochete, cyanobacteria
The endosymbiotic theory says that precursor eukaryotic cells acquired flagella by endosymbiosis with a _____ ancestor and others gained photosynthetic ability from endosymbiosis with a _____ ancestor.
Eukaryotes
The endosymbiotic theory has been developed to explain the emergence of
Symbiosis
Biologists have found evidence that eukaryotic cells evolved from prokaryotic organisms by a process of intracellular
A. Symbiosis
B. Parasitisim
C. Communalism
D. None of the choices are correct
All of the choices are correct
Which of the following is found in eukaryotic cells but not in prokaryotic cells?
Contain microtubules
Eukaryotic flagella differ from prokaryotic flagella because only eukaryotic flagella
Protozoa
Cilia are found in certain
Microtubules
There are nine peripheral pairs and one central pair of _____ found inside eukaryotic flagella and cilia.
Protozoa
Cell walls are not found on typical cells of
Mostly polysaccharide
The eukaryotic cell’s glycocalyx is
Movement
Which of the following is not a function of the eukaryote glycocalyx?
Fungi
Chitin is a chemical component of the cell walls of
All of these
The eukaryote cell membrane is composed of
Nucleolus
The site for ribosomal RNA synthesis is the
Chromatin
When a eukaryotic cell is not undergoing mitosis, the DNA and its associated proteins appear as a visible thread-like mass called the
Proteins associated with DNA in the nucleus
Histones are
Pores
The passageways in the nuclear envelope for movement of substances to and from the nucleus and cytoplasm are called nuclear
Endoplasmic reticulum
The cell’s series of tunnel-like membranes functioning in transport and storage are the
Golgi apparatus
An organelle that is a stack of flattened, membranous sacs and functions to receive, modify and package proteins for cell secretion is the
Use them to expel excess water from the cell
Protists with contractile vacuoles
Lysosome
A _____ originates from the golgi apparatus as one type of vesicle that contains a variety of enzymes for intracellular digestion.
. Mitochondria
Which organelle contains cristae where enzymes and electron carriers for aerobic respiration are found?
Enzymes for photosyntesis
Mitochondria possess all of the following except
Chloroplasts
Which organelle is found in algae but not found in protozoa or fungi?
Nucleus, chloroplast, mitochondria
In eukaryotic cells, which of the following contains DNA?
Thylakoids, stroma
Chloroplasts are composed of membranous sacs called _____ that carry chlorophyll. Surrounding these sacs is a ground substance called _____.
80S
The size of a eukaryotic cell ribosome is
Made up of cilia
Which of the following is not true of the cytoskeleton?
Cytoplasm, endoplasmic reticulum
In eukaryotic cells, ribosomes have two locations: scattered in the _____ and on the surface of _____.
All of the choices are correct
The cytoskeleton
Molds
Filamentous fungi are called
Pseudohyphae
When buds remain attached, they form a chain of yeast cells called
Dimorphic
Fungi that grow as yeast at one temperature but will grow as mold at another temperature are called
Photosynthetic
Which is not a characteristic of fungi?
Hyphae
The long, thread-like branching cells of molds are called
Saprobes
Most fungi obtain nutrients from dead plants and animals. These fungi are called
Mycellum
The woven, intertwining mass of hyphae that makes up the body of a mold is a/an
Are used to identify fungi
Fungal asexual spores
Opportunistic and primary
What two categories of fungi cause human diseases?
Amoebic dysentery
Blooms of certain alga are associated with all of the following except
Toxic algae
Pfiesteria is a/an
Cyst
During unfavorable growth conditions, many protozoa can convert to a resistant, dormant stage called a/an
E. Cell wall
All of the following are found in some or all protozoa except
Trophozoite
The motile, feeding stage of protozoa is called the
Mastigophora
The group of protozoa that have flagella are the
Apicomplexa
The group of protozoa that are not mobile are the
Sarcodina
The group of protozoa that use pseudopodia to move are the
Plasmodium-causes Chagas disease
Which is mismatched?
Mitochondria
Protozoan endoplasm contains
Are analogous to bacterial endospores
Protozoan cysts
Fecal oral route from contaminated food or water
Amoebic dysentery is most commonly contracted through the
Reduviid bug
The vector for the trypanosome of Chagas disease is the
Trypanosomes
All of the following are helminths except
. In kingdom Protista
Which of the following does not pertain to helminths?
. Helminthes
Larvae and eggs are developmental forms of
. All of choices are helminthes
All of the following are helminths except
. Definitive host
Adulthood and mating of helminths occur in which host?
Secondary host
Larval development of helminths occurs in which host?
Reproductive
Parasitic worms have a highly developed ______ system.
Digestive tract
In humans, helminthes generally infect the
Plasmodium malariae
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?
. Pigs
Eating undercooked meat can lead to food poisoning and helminthic infection. What is the common host for Taenia solium?
endospore
Under extreme conditions some bacilli go into a dormant, non-vegetative state called__ formation.
False
The eukaryotic cell membrane is a bilayer of sterols.
True or False.
False
The cell wall of fungi and algae are chemically identical to the prokaryotic cell wall.
True or False.
True
Chromosomes are generally not visible in the nucleus unless the cell is undergoing nuclear division.
True or False
False
The nuclear envelope is a single layer.
True or False.
True
Rough endoplasmic reticulum is studded with ribosomes.
True or False.
True
Eukaryotic mitochondria have their own 70S ribosomes and circular DNA.
True or False.
False
Algae are classified into Divisions based principally on their type of motility.
True or False.
True
Infections caused by fungi are called mycoses.
True or False.
False
All fungi have hyphae. True or False.
False
In humans, fungi can only infect the skin.
True or False
False
All fungi cause some kind of disease in plants and animals.
True or False.
True
Fungi can reproduce both sexually and asexually.
True or False.
True
All algae have chloroplasts.
True or False.
False
Plankton are floating communities of helminths.
True or False.
False
There are no algae that can cause human disease.
True or False.
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