micro cht 5 (done)

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In helminth life cycles, which host harbors the adult sexually reproductive phase of the parasite is called

definitive host

adulthood and mating of helminths occur in which host?

definitive host

all microbes that are unicellular, photosynthetic, and motile are classified as protozoans

false

order of fungi anatomy

filamentous fungi > Hyphae (septa) > mycelium(vegetative hyphae)

Which of these organisms has the best potential to survive in extreme environments?

fungi

which of these organisms has the best potential to survive in extreme environments?

fungi

In humans, helminths generally infect the ____.

gastrointestinal tract

As part of their reproductive cycle, helminths produce egg and sperm cells. both of these eukaryotic cell types have an outer surface composed of polysaccharides known as the ____.

glycocalyx

Larvae and eggs are developmental forms of ____.

helminths

Larval development of helminths occurs in which host?

intermediate host

microtuble

long hollow tubes that maintain cell shape and help transport items within the cell

which of the following does not pertain to helminths?

members of kingdom protista

which cytoskeletal fibers attach to and move chromosomes during mitosis?

microtubles

The Golgi apparatus ______

modifies proteins

helminth

multicellular animals

filamentous fungi

multicellular, cell walls of chitin, absorb nutrients, produce hypahe

Parasite

organism that lives in or on another organism for the purpose of acquiring nutrients

Saprobe

organism that obtains food from decaying organic matter

Which term most accurately describes a fungus growing on live human skin?

parasite

Chloroplasts are the site of what process in eukaryotic cells?

photosynthesis

select the statement that best describes the role of protozoan cysts

protozoan cysts are a survival form which allows them to survive adverse environmental conditions between hosts.

Choose the statement that best describes the role of mitochondria

prove cell with energy through cell repiration

intermediate filament

rope-like structures, 10nm in diameter, provide structural reinforcement

Fungi produce which structures for reproduction and multiplication? a. endospores b. cysts c. spores d. eggs

spores

A protozoan cyst differs from a helminth egg in that ____.

the cyst can germinate to form the organism but the egg must be fertilized

the two major parasitic groups of helminths include _____.

the flatworms. the roundworms

choose the statement that most accurately describes a typical helminth lifestyle.

the helminth reproduces sexually and spends most of its life in either a single animal host or a series of animal hosts.

Asexual spores

these are produced by the mitotic division of a SINGLE parent cell

sexual spores

these are produced by the union of genetic material from two different strains

actin filament

thin, 7nm in diameter, concentrated just inside the lasmic membrane

True or False vegetative hyphae produce spores

true

algae

unicellular or multicellular photosynthetic protists

yeast

unicellular, cell walls of chitin

protozoa

unicellular, heterotrophic protists

Yeasts are ___fungi, and molds are ____ fungi.

unicellular; filamentous

which groups represent eukaryotic organisms

-algae -protozoa -helminths -fungi

which groups represent eukaryotic organisms?

-algae -protozoa -helminths -fungi

Which structures are used by protozoans for motility?

-flagella -cilia -pseudopods

select all of the organisms that typically have cell walls

-fungi -algae -plants

select the choices that represent proper matches between organelle and its function in a eukaryotic cell.

-golgi apparatus-protein modification and production of condensing vesciles -smooth endoplasmic reticulum-storage of lipids and other nonprotein macromolecules

analyze the following statements, and select those that correctly apply to the characteristics of unicellular and multicellular organisms

-multicellular organisms evolved from colonial organisms when individual cells became specialized within the organism to perform a specific function -eukaryotic microbes are limited to protozoans, unicellular fungi, and the egg and/or larval stages of helminths -multicellular organisms, unlike colonial organisms, have their cells organized into specialized tissues.

Glycocalyx select all characteristics exhibited by the glycocalyx of eukaryotic cells.

-outermost surface of cell -composed of polysaccharide -means of adhering to other cells and surfaces -signal reception

select all the characteristics exhibited by BOTH bacterial and eukaryotic cytoplasmic membranes

-phospholipid bilayer -embedded proteins -selectively permeable barrier -transport systems

Select the activities of fungi which are considered detrimental from a human perspective.

-produce toxins such as aflatoxin -cause decomposition of fresh produce -cause disease in plants and animals contribute to allergies

when environmental conditions become unfavorable, many protozoa produce ___.

cysts

which of the following statements represent evidence supporting the endosymbiotic theory?

-the mitochondrion contains a circular chromosome that has bacterial DNA a sequences -mitochondria have two-layered membranes -the mitochondrion has ribosomes that are clearly prokaryotic -the mitochondrion is capable of independent divsion

Choose the characteristics that are exhibited by most protozoans

-unicellular -motile by means of flagella, cilia or pseudopodia -3um-300um size range -heterotrophic

Select all the characteristics of eukaryotic flagella that distinguish them from bacterial and arachaeal flagella

-whip back and forth -consist of a 9 +2 microtubule arrangement -200 nm in diameter

part

2

A mycelium is an intertwined mass of which type of fungal cells?

Hyphae

Amoeba utilize what structures for motility?

Pseudopods

Heterotrophic

acquisition of nutrients from organic materials (substrates)

it appears that the last common ancestor gave rise to which cell types?

bacteria, archaea, and eukaryotes

in contrast to bacterial cell walls that contain peptidoglycan, eukaryotic CELL WALLS are constructed of either ______

chitin or cellulose


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