PENN FOSTER PROCTORED EXAM
INTRO TO BIOLOGY (16-24) QUESTIONS
AND ANSWERS PASS GUARANTEED
100%
Which of the following is a postzygotic isolating mechanism? - Answer ✅Hybrid sterillity
The courtship rituals performed by some male birds to attract females of the same species are
an example of ___ isolation. - Answer ✅Behavioral
Speciation due to geographic barriers separating populations is called ___ speciation. - Answer
✅Allopatric
All of the following factors have been implicated in mass extinctions, except:
A. Continental Drift
B. Punctuated Equilibrium
C. Meteorite Impact
D. Loss of Habitat - Answer ✅Punctuated Equilibrium
Sympatric speciation may occur in plants due to: - Answer ✅Polyploidy
Recent advances in the field of systematics have led many scientists to adopt a ___ system of
classification of organisms. - Answer ✅Three-domain
@2025 Exam Material 1
, Infectious, disease-causing agents are called: - Answer ✅Pathogens
___ are self-feeders that depend on sunlight to split water and for the reduction of carbon
dioxide. - Answer ✅Photoautotrophs
A ___ is a rod-shaped prokaryotic cell. - Answer ✅Bacillus
Methanogens, extreme halophiles, and extreme thermoacidophiles are all classified as: -
Answer ✅Archaea
In which of these plants of the lytic cycle do we observe the assembly of viral components
within a host cell? - Answer ✅Maturation
Complete this analogy: Among protozoans, ciliates are to cilia as ___ are to pseudopods. -
Answer ✅Amoebas
Slime molds differ from water molds in that: - Answer ✅Water molds may be parasitic to both
plants and animals
Which of the following is not an example of a service provided by beneficial bacteria? - Answer
✅Bioremediation
___ is the idea that the first eukaryotic cells arose from beneficial associations between
primitive eukaryotes and bacteria. - Answer ✅Endosymbiotic theory
The main body of a fungus is composed of a mass of hyphae called a: - Answer ✅Mycelium
@2025 Exam Material 2
INTRO TO BIOLOGY (16-24) QUESTIONS
AND ANSWERS PASS GUARANTEED
100%
Which of the following is a postzygotic isolating mechanism? - Answer ✅Hybrid sterillity
The courtship rituals performed by some male birds to attract females of the same species are
an example of ___ isolation. - Answer ✅Behavioral
Speciation due to geographic barriers separating populations is called ___ speciation. - Answer
✅Allopatric
All of the following factors have been implicated in mass extinctions, except:
A. Continental Drift
B. Punctuated Equilibrium
C. Meteorite Impact
D. Loss of Habitat - Answer ✅Punctuated Equilibrium
Sympatric speciation may occur in plants due to: - Answer ✅Polyploidy
Recent advances in the field of systematics have led many scientists to adopt a ___ system of
classification of organisms. - Answer ✅Three-domain
@2025 Exam Material 1
, Infectious, disease-causing agents are called: - Answer ✅Pathogens
___ are self-feeders that depend on sunlight to split water and for the reduction of carbon
dioxide. - Answer ✅Photoautotrophs
A ___ is a rod-shaped prokaryotic cell. - Answer ✅Bacillus
Methanogens, extreme halophiles, and extreme thermoacidophiles are all classified as: -
Answer ✅Archaea
In which of these plants of the lytic cycle do we observe the assembly of viral components
within a host cell? - Answer ✅Maturation
Complete this analogy: Among protozoans, ciliates are to cilia as ___ are to pseudopods. -
Answer ✅Amoebas
Slime molds differ from water molds in that: - Answer ✅Water molds may be parasitic to both
plants and animals
Which of the following is not an example of a service provided by beneficial bacteria? - Answer
✅Bioremediation
___ is the idea that the first eukaryotic cells arose from beneficial associations between
primitive eukaryotes and bacteria. - Answer ✅Endosymbiotic theory
The main body of a fungus is composed of a mass of hyphae called a: - Answer ✅Mycelium
@2025 Exam Material 2
