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Bio I Exam V Study Guide

STUDY
PLAY
What historic figure died of a disease that had symptoms consistent with West Nile encephalitis?
Alexander The Great
What transmits West Nile virus to humans?
mosquitos
Know some examples of pathogens
viruses, bacteria, viroids
All prokaryotic cells have ____________ and __________.
ribosomes, cell membranes
What is the term for the process by which one bacterial cell transfers DNA to another?
conjugation
Small circular molecules of DNA in bacteria are called ____________.
plasmids
Know some ways that bacteria can obtain their nutrition.
chemoautotrophy, photoautotrophy, heterotrophy
Bacteria reproduce asexually by ______________.
prokaryotic fission
One of the newest techniques used to identify bacteria is to determine their _________________.
nucleotide sequences
In what way does prokaryotic fission resemble mitosis?
They have genetically identical offspring.
______________ are important in both food preparation and protecting the body against pathogens.
lacobacilli
Botulism toxin is produced by ______________.
clostridium
Anthrax is caused by a _____________.
bacillus (rod shaped)
Stomach ulcers are caused by a ___________.
helicobacter pylori
Know some facts about E.coli.
1) can act as a pathogen
2) can compete with pathogens in the gut
3) normal inhabitant of the gut
4) synthesizes vitamins essential to the host
Borrelia burgdorferi is the cause of ____________.
lyme disease
Know some things that bacteria re responsive to.
1) oxygen concentration
2) light
3) chemicals
4) gravity
Know some places where methanogens have been isolated.
termite guts, deep ocean vents, marsh mud, rocks deep below the Earth's surface
Extreme halophiles only survive in environments that are extremely high in _____________.
salt
Why do most scientists not consider viruses to be alive?
Their metabolic machinery is borrowed from a host cell.
Know some ways to characterize a virus.
1) nucleic acid core
2) noncellular organization
3) being parasitic
4) protein coat
Know some examples of conditions caused by viruses.
herpes, measles, influenza, hepatitis B
What kind of virus is an RNA virus?
goes backwards (retrovirus)
Viroids differ from viruses in that the former lack a ______________.
protein coat
Viriods are implicated in what human diseases?
hepatitis D
What is mad cow disease caused by?
prions
A disease that is always present but usually restricted to a small part of the population is called _____________.
endemic
Know some examples of diseases that are considered pandemic.
AIDS, SARS
_____________ can be decomposers, parasites, photoautotrophs and predators.
protists
The simplest of the eukaryotes are the __________.
protistians
Trypanosomes that infect humans are transmitted by ______________.
biting insects
Paramecium is a representative of the __________.
cillate
Know some examples of alveolates.
1) cillates
2) dinoflagllates
3) apicomplexans (sporozoans)
Neurotoxic shellfish poisoning is caused by ____________.
dinoflagellates
Which algae usually caused red tide?
dinoflagellates
What causes malaria?
apicomplexans
The parasite Plasmodium infects ____________ and ___________.
blood cells, liver cells
Sexual reproduction of the malaria parasite occurs in the __________ host.
mosquito
The failure of the potato crop and the subsequent Irish famine was due mainly to a fungus belonging to what group?
oomycotes
Know some characteristics of diatoms.
1) two-part shells
2) photosynthetic
3) silica shells
4) perforations in the shell
Chalk deposits as seen in the White Cliffs of Dover were produced by what?
coccolithophores
Kelp and Sargassum are examples of ________ algae.
brown
Holdfasts, gas-filled floats and a thick leathery surface are found in species of _________ algae.
brown
A source for alginic acid, a thickening, emulsifying agent found in ice cream, salad dressing, beer, toothpaste, cough syrup and floor polish are the ___________ algae.
brown
The largest algae would be included in which group?
brown
Most freshwater algae belong to which group?
green
Agar is produced by ________ algae.
red
Nori, used to wrap sushi, is derived from ______ algae.
red
What do amoeba use pseudopods for?
both movement and prey capture
How are slime molds classified?
protists
Know some examples of seed plants.
cycads, ginkos, confiers, angiosperms
The first group with flowers were the ___________.
angiosperms
Which algae are the most probable ancestors of land plants?
charophytes
Know some associations of vascular plants.
root systems, shoot systems, angiosperms, gymnosperms
Know some facts about xylem.
it transports water and minerals
Stomata are responsible for _______ escape from the leaves and _______ entry.
water, carbon dioxide
Know some major trends in terrestrial plant evolution.
1) development of vascular tissue
2) nomotile gametes
3) adaptation to environmental issues
4) fertilization by biotic vectors
Describe some trends in plant evolution
1) nonvascular to vascular
2) motile to nonmotile gametes
3) seedless to seeds
4) haploid to diploid dominance
What were the earliest land plants?
bryophytes
The mosses and liverworts are members of which division?
bryophytes
Know some examples of bryophytes.
mosses, hornworts, liverwort
What acidic, absorbent bryophyte was used for bandages in World War I?
peat moss
Know some facts about seedless vascular plants.
1) sporophytes are independent of gametes
2) sporophytes have vascular tissue
3) seeds are not produced
4) living members still exist
What feature of horsetails was useful to pioneers of the American West?
the silica in stems
What is the name given to the leaves of a fern?
fronds
What name is given to the underground stem of ferns and club mosses?
fronds
Today's coal deposits are mostly derived from _____________ and __________.
horse tails and lycophytes
What does the seed develop from?
ovule
What is the most appropriate term for a mature pollen grain?
male gametophyte
The first organisms that did not require water for reproduction were the _____________.
gymnosperms
Know some examples of conifers.
1) pine
2) fur
3) redwood
4) cedar
Why are angiosperms more advanced than gymnosperms?
gymnosperms lack fruit
The vast majority of plant species are ____________.
angiosperms
Which plant group has the most species, monocots or dicots?
dicots
What is least likely to be fround in an animal-pollinated plant?
inconspicuous flowers
What is the most nutritious agriculturally important seed?
quinoa
In fungi, where are the food materials digested?
outside the body
Know the major groups of fungi.
club (basidiomycete)
sac (ascomycete)
zygomycete
The major groups of fungi are assigned names on what basis?
their reproductive structures
Know the ways in which fungi can reproduce.
1) asexually by spores
2) budding of parent body
3) sexually by gametes
Ascomycete is another name for ________.
sac fungi
Into what fungal group do truffles fall?
sac fungi
Baking bread and making wine are dependent on __________ fungi.
sac fungi
Know some examples of sac fungi.
penicillin, truffles, saccharomyces, red bread mold
Most edible fungi are the ________ fungi.
club
Know some facts about mycorrhizae.
1) increase plant growth
2) symbionts
3) allow plant to absorb water
4) increase surface area for absorption of water and minerals
Know some things caused by fungi.
1) athlete's foot
2) histoplasmosis
3) black spot
4) ergotism
The chestnut blight in the U.S. is caused by __________ fungi.
sac