PORTAGE LEARNING MICROBIOLOGY BIOD 171
EXAM 4 EXAM SCRIPT 2026 TESTED
QUESTIONS AND CORRECT ANSWERS
ALREADY PASSED
◉ -Non-living infectious microbes that only replicate within a host
cell. Answer: Virus
◉ DNA or RNA. Answer: Genetic material
◉ Protein coat enclosing genome with differing structures. Answer:
Capsid
◉ Membrane that surrounds capsid and help to infect host. Answer:
Viral envelope
◉ Semi-permeable membrane made of a phospholipid bilayer.
Answer: Cell (plasma) membrane
◉ -Proteins in membrane allow the import of nutrients or export of
molecules (wastes, signaling molecules)
-Protein sensors receive information about the environment or
messages from other cells
, -Mechanical properties allow for movement, growth, resealing.
Answer: Cell (plasma) membrane functions
◉ -Rigid outer membrane to provide support, tensile strength,
turgor pressure, structure and protection to bacterial, plant, fungal
and algal cells.. Answer: Cell wall
◉ peptidoglycan. Answer: Bacterial
◉ Surface-layer proteins (S-layer). Answer: Archaea
◉ Cellulose, pectin, soluble protein. Answer: Plant
◉ Cellulose and chitin. Answer: Fungal
◉ Mannoproteins and chitin. Answer: Yeast
◉ Silica. Answer: Diatoms
◉ Compartment contained by the plasma membrane that contains
macromolecules and organelles (in eukaryotic cells). Answer:
Cytoplasm
EXAM 4 EXAM SCRIPT 2026 TESTED
QUESTIONS AND CORRECT ANSWERS
ALREADY PASSED
◉ -Non-living infectious microbes that only replicate within a host
cell. Answer: Virus
◉ DNA or RNA. Answer: Genetic material
◉ Protein coat enclosing genome with differing structures. Answer:
Capsid
◉ Membrane that surrounds capsid and help to infect host. Answer:
Viral envelope
◉ Semi-permeable membrane made of a phospholipid bilayer.
Answer: Cell (plasma) membrane
◉ -Proteins in membrane allow the import of nutrients or export of
molecules (wastes, signaling molecules)
-Protein sensors receive information about the environment or
messages from other cells
, -Mechanical properties allow for movement, growth, resealing.
Answer: Cell (plasma) membrane functions
◉ -Rigid outer membrane to provide support, tensile strength,
turgor pressure, structure and protection to bacterial, plant, fungal
and algal cells.. Answer: Cell wall
◉ peptidoglycan. Answer: Bacterial
◉ Surface-layer proteins (S-layer). Answer: Archaea
◉ Cellulose, pectin, soluble protein. Answer: Plant
◉ Cellulose and chitin. Answer: Fungal
◉ Mannoproteins and chitin. Answer: Yeast
◉ Silica. Answer: Diatoms
◉ Compartment contained by the plasma membrane that contains
macromolecules and organelles (in eukaryotic cells). Answer:
Cytoplasm
