BIO 151 Practice Exam Questions and
Answers
What do host cells provide for viruses?
A. Nucleotides and amino acids
B. Ribosomes
C. ATP
D. All of the above - Answer-D. all of the above
These represent symbiotic relationships between fungi and algae.
A.Zygomycetes
B.Ascomycetes
C.Basidiomycetes
D.Chytrids
E.Lichens - Answer-E.Lichens
These fungi include yeast and morels and produce eight spores in a sac-like structure.
A.Zygomycetes
B.Ascomycetes
C.Basidiomycetes
D.Chytrids
E.Lichens - Answer-B.Ascomycetes
Which stage represents the diploid phase of the moss life cycle below? - Answer-Stage
E, mature sporophyte
Which of the following represents the correct sequence of events during the infection
cycle of HIV?
A. Incorporation of viral genome into human genome - T cell infection - reverse
transcription - production of new viruses.
B. T cell infection - macrophage infection - reverse transcription - production of new
viruses - incorporation of viral genome into human genome.
C. Reverse transcription - T cell infection - incorporation of viral genome into human
genome - production of new viruses.
D. Capsid assembly - incorporation of phage genome into host genome - transcription -
cell lysis.
E. White blood cell infection - reverse transcription - incorporation of viral genome into
human genome - production of new viruses. - Answer-E. White blood cell infection -
reverse transcription - incorporation of viral genome into human genome - production of
new viruses.
, When using Koch's postulates, which of the following is an essential requirement for the
suspected pathogen?
A.It is present in all organisms with the disease.
B.It can be cultured on an agar plate.
C.It is pathogenic on a wide variety of organisms.
D. It can reproduce sexually within the host. - Answer-A.It is present in all organisms
with the disease.
Although they look radically different from each other, humans and sea squirts are both
chordates. Which of the following is not a feature of all Chordates at some point in their
life cycle?
A.Dorsal hollow nerve cord.
B.Notochord.
C.Pharyngeal slits or pouches.
D.Vertebrae - Answer-D.Vertebrae
Which of the following is true of the mushroom life cycle:
A.spores are produced on the gills of the mushroom by meiosis.
B. sperm and eggs are released from the gills of the mushroom, fertilization occurs, and
the zygote grows into a new mushroom.
C. spores grow into zygosporangia which then produce ascospores.
D. seeds are produced on the gills of mushrooms, the seeds germinate and grow into a
new mushroom.
E. More than one of the above is true. - Answer-A.spores are produced on the gills of
the mushroom by meiosis
The hyphae of AMF (arbuscular mycorrhizal fungi) form bushy or balloon-like haustoria
after making contact with the plasma membrane of a root cell. What is the function of
these structures?
A. They anchor the fungus inside the root, so the association is more permanent
B. They increase the surface area available for the transfer of nutrients
C.They produce toxins that protect the plant cells against herbivores
D.They break down cellulose and lignin in the plant cell wall. - Answer-B. They increase
the surface area available for the transfer of nutrients
Although most bacteria are single-celled organisms, they can have diverse mechanisms
for moving around their environment. Which of the following does NOT represent a type
of motility found in bacteria?
A.Cilia that line the outer surface of cells.
B.Flagella that actually spin.
Answers
What do host cells provide for viruses?
A. Nucleotides and amino acids
B. Ribosomes
C. ATP
D. All of the above - Answer-D. all of the above
These represent symbiotic relationships between fungi and algae.
A.Zygomycetes
B.Ascomycetes
C.Basidiomycetes
D.Chytrids
E.Lichens - Answer-E.Lichens
These fungi include yeast and morels and produce eight spores in a sac-like structure.
A.Zygomycetes
B.Ascomycetes
C.Basidiomycetes
D.Chytrids
E.Lichens - Answer-B.Ascomycetes
Which stage represents the diploid phase of the moss life cycle below? - Answer-Stage
E, mature sporophyte
Which of the following represents the correct sequence of events during the infection
cycle of HIV?
A. Incorporation of viral genome into human genome - T cell infection - reverse
transcription - production of new viruses.
B. T cell infection - macrophage infection - reverse transcription - production of new
viruses - incorporation of viral genome into human genome.
C. Reverse transcription - T cell infection - incorporation of viral genome into human
genome - production of new viruses.
D. Capsid assembly - incorporation of phage genome into host genome - transcription -
cell lysis.
E. White blood cell infection - reverse transcription - incorporation of viral genome into
human genome - production of new viruses. - Answer-E. White blood cell infection -
reverse transcription - incorporation of viral genome into human genome - production of
new viruses.
, When using Koch's postulates, which of the following is an essential requirement for the
suspected pathogen?
A.It is present in all organisms with the disease.
B.It can be cultured on an agar plate.
C.It is pathogenic on a wide variety of organisms.
D. It can reproduce sexually within the host. - Answer-A.It is present in all organisms
with the disease.
Although they look radically different from each other, humans and sea squirts are both
chordates. Which of the following is not a feature of all Chordates at some point in their
life cycle?
A.Dorsal hollow nerve cord.
B.Notochord.
C.Pharyngeal slits or pouches.
D.Vertebrae - Answer-D.Vertebrae
Which of the following is true of the mushroom life cycle:
A.spores are produced on the gills of the mushroom by meiosis.
B. sperm and eggs are released from the gills of the mushroom, fertilization occurs, and
the zygote grows into a new mushroom.
C. spores grow into zygosporangia which then produce ascospores.
D. seeds are produced on the gills of mushrooms, the seeds germinate and grow into a
new mushroom.
E. More than one of the above is true. - Answer-A.spores are produced on the gills of
the mushroom by meiosis
The hyphae of AMF (arbuscular mycorrhizal fungi) form bushy or balloon-like haustoria
after making contact with the plasma membrane of a root cell. What is the function of
these structures?
A. They anchor the fungus inside the root, so the association is more permanent
B. They increase the surface area available for the transfer of nutrients
C.They produce toxins that protect the plant cells against herbivores
D.They break down cellulose and lignin in the plant cell wall. - Answer-B. They increase
the surface area available for the transfer of nutrients
Although most bacteria are single-celled organisms, they can have diverse mechanisms
for moving around their environment. Which of the following does NOT represent a type
of motility found in bacteria?
A.Cilia that line the outer surface of cells.
B.Flagella that actually spin.
