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Title: BIO250 Exam 2
Description: Question 1 Amoebic dysentery is most commonly contracted through the Select one: a. Fecal oral route from contaminated food or water b. Direct transmission from one host to another c. Puncture wounds d. Insect bites e. None of the choices are correct Question 2 A bacterial genus that has waxy mycolic acid in the cell walls is Select one: a. Mycobacterium b. Mycoplasma c. Streptococcus d. Corynebacterium e. Salmonella Question 3 Classification of viruses into families involves determining all the following characteristics except Select one: a. Type of nucleic acid b. Type of capsid c. Presence of an envelope d. Biochemical reactions e. Number of strands in the nucleic acid Question 4 The basal body of a flagellum in gram-positive bacteria is anchored into the Select one: a. Hook b. Outer membrane c. Cell wall d. Peptidoglycan layer e. Cell membrane Question 5 Lysogeny refers to Select one: a. Altering the host range of a virus b. Latent state of herpes infections c. Virion exiting host cell d. Viral genome inserting into bacterial host chromosome e. None of the choices are correct Question 6 Reverse transcriptase synthesizes Select one: a. The positive RNA strand from a negative RNA strand b. A negative RNA strand from a positive RNA strand c. Viral RNA from DNA d. Viral DNA from RNA e. None of the choices are correct Question 7 Which of the following is not a viral order in the classification system? Select one: a. Caudovirales b. Vaccinia virus c. Nidovirales d. Mononegavirales e. All of the choices are viral orders Question 8 Spirochetes have a twisting and flexing locomotion due to appendages called Select one: a. Flagella b. Cilia c. Fimbriae d. Periplasmic flagella (axial filaments) e. Sex pili Question 9 The envelope of enveloped viruses is Select one: a. Identical to the host plasma membrane b. Only compose of host endomembrane c. Always includes spikes d. Is obtained by viral budding or exocytosis e. None of the choices are correct Question 10 Host range is limited by Select one: a. Type of nucleic acid in the virus b. Age of the host cell c. Type of host cell receptors on cell membrane d. Size of the host cell e. All of the choices are correct Question 11 Spirochetes are able to move due to: Select one: a. A periplasmic flagellum b. A membrane bound flagellum c. Cilia serving as walking feet d. Pseudopods Question 12 Lysozyme is most effective against Select one: a. Gram negative organisms b. Gram positive organisms c. Mycoplasmas d. Cyanobacteria e. Archea Question 13 Chloroplasts are composed of membranous sacs called _____ that carry hlorophyll. Surrounding these sacs is a ground substance called _____. Select one: a. Thylakoids, stroma b. Granna, stroma c. Cristae, stroma d. Cristae, matrix e. Thylakoid, matrix Question 14 The outcome of the Gram stain is based on differences in the cell's Select one: a. Ribosomes b. Inclusions c. Cell wall d. Cell membrane e. Flagella Question 15 Most fungi obtain nutrients from dead plants and animals. These fungi are called Select one: a. Saprobes b. Parasites c. Substrates d. Nonseptate e. Dimorphic Question 16 Adulthood and mating of helminths occur in which host? Select one: a. Primary host b. Secondary host c. Definitive host d. Transport host e. Mating takes place in all hosts Question 17 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? Select one: a. HIV b. T. solium c. Plasmodium malariae d. Trichophyton Question 18 The endosymbiotic theory has been developed to explain the emergence of Select one: a. Archea b. Bacteria c. Prokaryotes d. Eukaryotes e. None of the choices are correct Question 19 Which of the following is not a division of Kingdom Prokaryote according to Bergey's Manual of Determinative Bacteriology? Select one: a. Gracilicutes b. Scotobacteria c. Firmicutes d. Tenericutes e. Mendosicutes Question 20 Parasitic worms have a highly developed ______ system. Select one: a. Digestive b. Nervous c. Respiratory d. Muscular e. Reproductive

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BIO250 Exam 2
Question 1
Amoebic dysentery is most commonly contracted through the
Select one:
a
...
Direct transmission from one host to another
c
...
Insect bites
e
...
Mycobacterium
b
...
Streptococcus
d
...
Salmonella
Question 3
Classification of viruses into families involves determining all the following characteristics
except
Select one:
a
...
Type of capsid

c
...
Biochemical reactions
e
...
Hook
b
...
Cell wall
d
...
Cell membrane
Question 5
Lysogeny refers to
Select one:
a
...
Latent state of herpes infections
c
...
Viral genome inserting into bacterial host chromosome
e
...
The positive RNA strand from a negative RNA strand

b
...
Viral RNA from DNA
d
...
None of the choices are correct
Question 7
Which of the following is not a viral order in the classification system?
Select one:
a
...
Vaccinia virus
c
...
Mononegavirales
e
...
Flagella
b
...
Fimbriae
d
...
Sex pili
Question 9
The envelope of enveloped viruses is
Select one:

a
...
Only compose of host endomembrane
c
...
Is obtained by viral budding or exocytosis
e
...
Type of nucleic acid in the virus
b
...
Type of host cell receptors on cell membrane
d
...
All of the choices are correct
Question 11
Spirochetes are able to move due to:
Select one:
a
...
A membrane bound flagellum
c
...
Pseudopods
Question 12
Lysozyme is most effective against
Select one:

a
...
Gram positive organisms
c
...
Cyanobacteria
e
...
Surrounding
these sacs is a ground substance called _____
...
Thylakoids, stroma
b
...
Cristae, stroma
d
...
Thylakoid, matrix
Question 14
The outcome of the Gram stain is based on differences in the cell's
Select one:
a
...
Inclusions
c
...
Cell membrane
e
...
These fungi are called
Select one:
a
...
Parasites
c
...
Nonseptate
e
...
Primary host
b
...
Definitive host
d
...
Mating takes place in all hosts
Question 17
After returning from a trip to Africa, Tom begins to feel very tired and weak
...
A blood smear reveals a protozoan is present in his blood
...
Which of the following could be the causative agent of his disease?
Select one:
a
...
T
...
Plasmodium malariae

d
...
Archea
b
...
Prokaryotes
d
...
None of the choices are correct
Question 19
Which of the following is not a division of Kingdom Prokaryote according to Bergey's Manual
of Determinative Bacteriology?
Select one:
a
...
Scotobacteria
c
...
Tenericutes
e
...

Select one:
a
...
Nervous

c
...
Muscular
e
...
Fecal oral route from contaminated food or water
2
...
Biochemical reactions
4
...
Viral genome inserting into bacterial host chromosome
6
...
Vaccinia virus
8
...
Is obtained by viral budding or exocytosis
10
...
A periplasmic flagellum
12
...
Thylakoids, stroma
14
...
Saprobes
16
...
Plasmodium malariae
18
...
Scotobacteria
20
Title: BIO250 Exam 2
Description: Question 1 Amoebic dysentery is most commonly contracted through the Select one: a. Fecal oral route from contaminated food or water b. Direct transmission from one host to another c. Puncture wounds d. Insect bites e. None of the choices are correct Question 2 A bacterial genus that has waxy mycolic acid in the cell walls is Select one: a. Mycobacterium b. Mycoplasma c. Streptococcus d. Corynebacterium e. Salmonella Question 3 Classification of viruses into families involves determining all the following characteristics except Select one: a. Type of nucleic acid b. Type of capsid c. Presence of an envelope d. Biochemical reactions e. Number of strands in the nucleic acid Question 4 The basal body of a flagellum in gram-positive bacteria is anchored into the Select one: a. Hook b. Outer membrane c. Cell wall d. Peptidoglycan layer e. Cell membrane Question 5 Lysogeny refers to Select one: a. Altering the host range of a virus b. Latent state of herpes infections c. Virion exiting host cell d. Viral genome inserting into bacterial host chromosome e. None of the choices are correct Question 6 Reverse transcriptase synthesizes Select one: a. The positive RNA strand from a negative RNA strand b. A negative RNA strand from a positive RNA strand c. Viral RNA from DNA d. Viral DNA from RNA e. None of the choices are correct Question 7 Which of the following is not a viral order in the classification system? Select one: a. Caudovirales b. Vaccinia virus c. Nidovirales d. Mononegavirales e. All of the choices are viral orders Question 8 Spirochetes have a twisting and flexing locomotion due to appendages called Select one: a. Flagella b. Cilia c. Fimbriae d. Periplasmic flagella (axial filaments) e. Sex pili Question 9 The envelope of enveloped viruses is Select one: a. Identical to the host plasma membrane b. Only compose of host endomembrane c. Always includes spikes d. Is obtained by viral budding or exocytosis e. None of the choices are correct Question 10 Host range is limited by Select one: a. Type of nucleic acid in the virus b. Age of the host cell c. Type of host cell receptors on cell membrane d. Size of the host cell e. All of the choices are correct Question 11 Spirochetes are able to move due to: Select one: a. A periplasmic flagellum b. A membrane bound flagellum c. Cilia serving as walking feet d. Pseudopods Question 12 Lysozyme is most effective against Select one: a. Gram negative organisms b. Gram positive organisms c. Mycoplasmas d. Cyanobacteria e. Archea Question 13 Chloroplasts are composed of membranous sacs called _____ that carry hlorophyll. Surrounding these sacs is a ground substance called _____. Select one: a. Thylakoids, stroma b. Granna, stroma c. Cristae, stroma d. Cristae, matrix e. Thylakoid, matrix Question 14 The outcome of the Gram stain is based on differences in the cell's Select one: a. Ribosomes b. Inclusions c. Cell wall d. Cell membrane e. Flagella Question 15 Most fungi obtain nutrients from dead plants and animals. These fungi are called Select one: a. Saprobes b. Parasites c. Substrates d. Nonseptate e. Dimorphic Question 16 Adulthood and mating of helminths occur in which host? Select one: a. Primary host b. Secondary host c. Definitive host d. Transport host e. Mating takes place in all hosts Question 17 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? Select one: a. HIV b. T. solium c. Plasmodium malariae d. Trichophyton Question 18 The endosymbiotic theory has been developed to explain the emergence of Select one: a. Archea b. Bacteria c. Prokaryotes d. Eukaryotes e. None of the choices are correct Question 19 Which of the following is not a division of Kingdom Prokaryote according to Bergey's Manual of Determinative Bacteriology? Select one: a. Gracilicutes b. Scotobacteria c. Firmicutes d. Tenericutes e. Mendosicutes Question 20 Parasitic worms have a highly developed ______ system. Select one: a. Digestive b. Nervous c. Respiratory d. Muscular e. Reproductive