1|Page
BIOD102 Essential Biology II — Final Verified
Examination 2026/2027 | Portage Learning | 75
Questions with Verified Answers||Newest Exam!!!
What are prions?
A) mobile segments of DNA
B ) misfolded versions of normal proteins that can cause
disease
C) viral DNA that attaches itself to the host genome and
causes disease
D ) tiny circular molecules of RNA that can infect plants -
Answer-B ) misfolded versions of normal proteins that can
cause disease
The chloroplasts of land of land plants are thought to have
been derived according to which evolutionary sequence?
A) red algae - brown algae - green algae - land plants
B) cyanobacteria - red algae - green algae - land plants
C) cyanobacteria - green algae - land plants
D) cyanobacteria - green algae - fungi - land plants -
Answer-C) cyanobacteria - green algae - land plants
,2|Page
All protists are...
A) symbionts
B) eukaryotic
C) unicellular
D) mixotrophic - Answer-B) eukaryotic
When a mosquito infected with Plasmodium first bites a
human, the Plasmodium
A) oocyst undergoes meiosis
B) cells infect the human liver cells
C) cells cause lysing of the human red blood cells
D) gametes fuse, forming an - Answer-B) cells infect the
human liver cells
Which of the following pairs of protists and their ecological
roles are correctly matched?
A) entamoebas -- free-living soil organisms
B) euglenozoans -- primarily mixotrophic
C) apicomplexans -- parasites of animals
D) dinoflagellates -- parasites of plants - Answer-C)
apicomplexans -- parasites of animals
,3|Page
Dinoflagellates
A ) include species that cause malaria
B) possess two flagella
C) are all autotrophic
D) lack mitochondria - Answer-B) possess two flagella
Which of the following statements supports the argument
that viruses are nonliving?
A) Their DNA does not encode proteins
B) They do not carry out metabolic processes
C) They do not evolve
D) They have RNA rather than DNA - Answer-B) They do
not carry out metabolic processes
Which of the following characteristics is typical of the lytic
cycle of a bacteriophage?
A) The viral genome replicates without destroying the host
B) Viral DNA is incorporated into the host genome.
C) A large number of phages are released at a time.
, 4|Page
D) The virus-host relationship usually lasts for generations.
- Answer-C) A large number of phages are released at a
time.
Which of the following characteristics correctly describes
retroviruses?
A) They can only reproduce by infecting bacteria.
B) They have a single-stranded RNA that acts as a
template for DNA synthesis.
C) They are made up of
only a single protein.
D) They have a single-stranded DNA that acts as a
template for DNA synthesis - Answer-B) They have a
single-stranded RNA that acts as a template for DNA
synthesis.
The virus genome and viral proteins are assembled into
virus particles during which of the following parts of the
reproductive cycle?
A) the lytic cycle in all host organisms but the lysogenic
cycle only in bacteria
B) the lytic cycle and the lysogenic cycle in all known host
organisms
BIOD102 Essential Biology II — Final Verified
Examination 2026/2027 | Portage Learning | 75
Questions with Verified Answers||Newest Exam!!!
What are prions?
A) mobile segments of DNA
B ) misfolded versions of normal proteins that can cause
disease
C) viral DNA that attaches itself to the host genome and
causes disease
D ) tiny circular molecules of RNA that can infect plants -
Answer-B ) misfolded versions of normal proteins that can
cause disease
The chloroplasts of land of land plants are thought to have
been derived according to which evolutionary sequence?
A) red algae - brown algae - green algae - land plants
B) cyanobacteria - red algae - green algae - land plants
C) cyanobacteria - green algae - land plants
D) cyanobacteria - green algae - fungi - land plants -
Answer-C) cyanobacteria - green algae - land plants
,2|Page
All protists are...
A) symbionts
B) eukaryotic
C) unicellular
D) mixotrophic - Answer-B) eukaryotic
When a mosquito infected with Plasmodium first bites a
human, the Plasmodium
A) oocyst undergoes meiosis
B) cells infect the human liver cells
C) cells cause lysing of the human red blood cells
D) gametes fuse, forming an - Answer-B) cells infect the
human liver cells
Which of the following pairs of protists and their ecological
roles are correctly matched?
A) entamoebas -- free-living soil organisms
B) euglenozoans -- primarily mixotrophic
C) apicomplexans -- parasites of animals
D) dinoflagellates -- parasites of plants - Answer-C)
apicomplexans -- parasites of animals
,3|Page
Dinoflagellates
A ) include species that cause malaria
B) possess two flagella
C) are all autotrophic
D) lack mitochondria - Answer-B) possess two flagella
Which of the following statements supports the argument
that viruses are nonliving?
A) Their DNA does not encode proteins
B) They do not carry out metabolic processes
C) They do not evolve
D) They have RNA rather than DNA - Answer-B) They do
not carry out metabolic processes
Which of the following characteristics is typical of the lytic
cycle of a bacteriophage?
A) The viral genome replicates without destroying the host
B) Viral DNA is incorporated into the host genome.
C) A large number of phages are released at a time.
, 4|Page
D) The virus-host relationship usually lasts for generations.
- Answer-C) A large number of phages are released at a
time.
Which of the following characteristics correctly describes
retroviruses?
A) They can only reproduce by infecting bacteria.
B) They have a single-stranded RNA that acts as a
template for DNA synthesis.
C) They are made up of
only a single protein.
D) They have a single-stranded DNA that acts as a
template for DNA synthesis - Answer-B) They have a
single-stranded RNA that acts as a template for DNA
synthesis.
The virus genome and viral proteins are assembled into
virus particles during which of the following parts of the
reproductive cycle?
A) the lytic cycle in all host organisms but the lysogenic
cycle only in bacteria
B) the lytic cycle and the lysogenic cycle in all known host
organisms
