1)**What group of organisms are typically found in extreme envrionments A- Compl
ID: 99352 • Letter: 1
Question
1)**What group of organisms are typically found in extreme envrionments
A- Complex fungi
B-Radicals
C- Aerobic bacteria
D- The archaea
E- Protozoa
2)** The third step in viral invasion of a cell
a- Attachment
b-Attenuated virus
c-Synthesis
d-Release
e-Assembly
f-Uncoating
g-Inactivated Virus
i-Genetically-engineered vaccine
3)**The second step in viral invasion of a cell
a- Attachment
b-Attenuated virus
c-Synthesis
d-Release
e-Assembly
f-Uncoating
g-Inactivated Virus
i-Genetically-engineered vaccine
4)** The fourth step in viral invasion of a cell
a- Attachment
b-Attenuated virus
c-Synthesis
d-Release
e-Assembly
f-Uncoating
g-Inactivated Virus
i-Genetically-engineered vaccine
5)** The fifth step in viral invasion of a cell
a- Attachment
b-Attenuated virus
c-Synthesis
d-Release
e-Assembly
f-Uncoating
g-Inactivated Virus
i-Genetically-engineered vaccine
6)** A virus that cannot replicate and is used as a vaccine
a- Attachment
b-Attenuated virus
c-Synthesis
d-Release
e-Assembly
f-Uncoating
g-Inactivated Virus
i-Genetically-engineered vaccine
7)**A virus that replicate but more slowly that usual and is used as a vaccine
a- Attachment
b-Attenuated virus
c-Synthesis
d-Release
e-Assembly
f-Uncoating
g-Inactivated Virus
i-Genetically-engineered vaccine
8)** The first step in viral invasion of a cell
a- Attachment
b-Attenuated virus
c-Synthesis
d-Release
e-Assembly
f-Uncoating
g-Inactivated Virus
i-Genetically-engineered vaccine
9) **A vaccine that is made by expressing viral genes in a non-viral host
a- Attachment
b-Attenuated virus
c-Synthesis
d-Release
e-Assembly
f-Uncoating
g-Inactivated Virus
i-Genetically-engineered vaccine
10)** Which one of the following sentence completions is incorrect? Protozoa:
A-include many species such as yeast
B-are usually motile and move via flagella, cilia or pseudopodia.
C-are single-celled organisms considered animal-like
D-are the cause of many important diseases including malaria.
E-are eukaryotic cells and contain numerous organelles
11)** Microbes found in very different environments will most likely have significant differences in their genomes.
A-false; there is no relationship between habitat and genome
B-true; different amino acid sequences on the genes of different bacteria will be present
C-true; genes are a large part of a genome and genes produce the enzymes that allow bacteria to thrive and reproduce; different habitats will thus require that different genetic material is present
D-none of the above
12**Match the following with:
a-Coccidioides Immitis
b-Toxoplasma sp.
c-Trypanosoma brucei
d-Dinoflagellate
e-candida albicans
f-Pneumocystis jirovecii
g-Trypanosoma cruzi
h-Histoplasma capsulatum
i-Acanthamoeba sp.
j-Paramecium
k-Claviceps purpurae
l-Entamoeba histolytica
m-Cryptococcus neoformans
n-Giardia lamblia
o-Plasmodium sp.
^^^^^MATCH THESE WITH THESE «««« **PART OF Q 12**
A protozoan that causes toxoplasmosis
A fungus that causes disease of the lungs and meninges
A protozoan that causes African Sleeping Sickness
A protozoan that causes bloody diarrhea
A fungus that causes “valley fever” and may be interesting to bioterrorists.
A protozoan that causes a fatal form of pneumonia in AIDS pateints
A protozoan group that produces a toxin and red pigment
A fungus that causes a nervous system disorder called ergot disease
A protozoan that causes a really foul-smelling diarrhea
A fungal disease causes a mild respiratory illness and is associated with bird droppings
A protozoan that causes South American Sleeping Sickness (a.k.a Chagas disease)
A protozoan that causes malaria
A fungus that causes thrush
A protozoan that causes eye infections in people who wear contact lenses
A ciliate that can be rather large, but is generally not a problem for humans
13)** When scientists are examining DNA, such as the ribosomal RNA(rRNA) genes, they are separate DNA molecules based on their ____ using a ____
A- Sequence; electron-free current
B- charge; electric field
C- size; electrical current
D- flavor; electronic tongue
E- size; proton gradient
14)** Which statement or statements are true in regards to fungi?
A-they are found in either a yeast-like or a mold-like morphology
B- molds that have a separation between their cells are called septate
C- molds that have no separation between their cells are called septate
D- yeast can be described as being septate or non-septate
e-Both “a” and “b”
15)**MATCH THE FOLLOWING **
a-Differential
b-Gram stain
c-Enriched
d-Cyst
e-Spore
f-Glycocalyx
g-Diplococci
h-Staphylococci
i-Trophozoite
j-Selective
k-Simple stain
l-Streptococci
1- A staining technique that is used to reveal the difference between bacteria that have differing amounts of peptidoglycan in their cell walls
2-Spherical bacteria arranged in a grape-like cluster
3-A type of medium that inhibits the growth of some organisms while allowing others to grow
4-A type of medium that indicates that there are more than one type of organism because of a difference of appearance on the medium.
5-Sperical bacteria arranged in a chain
6-a survival structure produced by members of the genera Bacillus and Clostridum
7- Sperical bacteria arranged in pairs
8- A positive charged colored substance that will bind to negatively charged bacteria
9- A type of medium that supports the growth of many different organisms due to the presence of very nutritious components
10- A survival structure produced by many protozoa
11- The actively-feeding stage of protozoa
12- A polysaccharide coating that helps bacteria to attach to surfaces
16** How is molecular technology used to understand microbial diversity?
A- molecular techolonogy does not relate to microbial diversity whatsoever
B-molecular technology helps us to look at the atoms of DNA.
C- molecular technology allows us to grow all microorganisms in the lab
D- molecular technology allows us to sequence DNA, which allows us to compare genomes.
17** For microbes, how are genetic diversity and metabolic diversity related?
A- genetic diversity does not support a high level of metabolic diversity
B- genetic diversity is not related to metabolic diversity
C- genetic diversity supports a low level of metabolic diversity
D- genetic diversity supports a high level of metabolic diversity
18** Which of the following allows microbes to live in so many different environment on earth?
A- they all have the need to acquire antibiotic resistance
B- they have diverse metabolic activities
C- they wait for long periods of time while the environment changes so they can live in a given niche
D- they come in many different morphological shapes which allows them to adhere to different surfaces.
19)** Which is true in regard to the zygomycetes?
A- they have a sexual life cycle
B- they have an asexual life cycle
C- they can form zygospores
D- they can reproduce by budding
E- choices “a”, “b”, “c” are all true
20)** Scientists have madly been sequencing the genomes of various microorganims, including thermotoga, this is accomplished using machines that read ____ that have been attached to the four different bases of the DNA.
A- the same radio frequencies
B- the same colored dyes
C- different colored yes
D- different radio frequencies
E- between the lines
21)** _____diversity is greater than all other species of life put together.
A- bacterial
B- virus
C- microbial
D- fungal
E-nematode
F- amoeba
G- archaebacteria
Explanation / Answer
1. Archaea
2.the usual steps in viral invasion are 1.attachment 2.penetration 3uncoating 4. Replication 5.assembly 6. Release
So answer is f uncoating
3. Since penetration is not an option...answer is attachment.
4. Answer is c synthesis
5.. Answer is e. Assembly
6.answeer is g. Inactivated vaccine consisting of virus particles grown in culture and then killed using heat or formaldehyde.
7.answer is attenueated virus
8. First step is attachment
9. Answer is i. Gen engineered vaccine
10. Answer is A.yeast is a fungus not a protozoan
11.answer is c..true
12.a-5 valley fever
b-1
c-3 african sleeping sickness
d- 7
e- 13 oral thrush
f-6 pneumonia
g- 11.chagas disease
h- 10
i- 14.affects cornea in people using lens
j- 15
k- 8 ergot disease
l- 4. Bloody diarrhoea
m- 2.lungs and meninges
n- 9. Foul smelling diarrhoea
o- 12 malaria
13. Answer is b..charge using electric field
16. d
18. b
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