MICROBIOLOGY STUDY QUESTIONS AND THEIR CORRECT AND EXPECTED ANSWERS
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Course
MICROBIOLOGY
Institution
MICROBIOLOGY
Which of the following is true regarding the bacterial plasma membrane only, and not the archaeal plasma membrane?
The bacterial plasma membrane only occurs as a bilayer.
Choose the true statement(s) about prokaryotic external appendages. To be marked correct, you'll need to select all true state...
which of the following is true regarding the bacte
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MICROBIOLOGY STUDY
QUESTIONS AND THEIR CORRECT
AND EXPECTED ANSWERS
Which of the following is true regarding the bacterial plasma
membrane only, and not the archaeal plasma membrane?
The bacterial plasma membrane only occurs as a bilayer.
Choose the true statement(s) about prokaryotic external
appendages. To be marked correct, you'll need to select all
true statements, as there may be more than one correct
answer.
Pili allow for adhesion, movement, and aid in gene transfer
through conjugation.
Flagella allow for motility.
The glycocalyx promotes adhesion and interferes with
phagocytosis.
All of the following are examples of inclusion bodies in
prokaryotic cells except __________.
endospores
these are
carboxysomes
,magnetosomes
glycogen granules
Which of the following are bacteria that initially had a cell wall
and lost it either through the course of their life cycle or due
to mutation?
L-form bacteria
Choose the false statement about cellular transport
mechanisms.
Diffusion is the passive movement of substances from areas of
low concentration to areas of high concentration.
True
Facilitated diffusion does not require energy and uses
membrane proteins to move substances down their
concentration gradient.
Active transport requires energy and uses carrier proteins to
move substances against their concentration gradient.
Osmosis is the passive movement of water from a low-solute
concentration to a high-solute concentration.
Choose the true statement(s) about prokaryotic cells.
All prokaryotes are unicellular organisms.
Most of a prokaryote's nutrients are obtained through diffusion.
All prokaryotes lack a membrane-bound nucleus and organelles.
Choose the true statement about the Domain Bacteria.
, The Domain Bacteria is made up of prokaryotes and likely
originated 3.8 billion years ago.
Choose the false statement regarding prokaryotic plasma
membranes.
Ions and large polar substances can diffuse through the plasma
membrane without assistance.
True
Gases, water, and small non-charged substances can diffuse
through the selectively permeable plasma membrane.
The plasma membrane's phospholipid bilayer contains
hydrophilic phosphates and hydrophobic fatty acids.
The plasma membrane is a phospholipid bilayer that serves as
barrier for a cell.
Choose the true statement(s) about acid-fast bacteria.
Genera Nocardia and Mycobacterium are acid-fast and stain
pink during the acid-fast staining procedure.
Acid-fast bacteria have a waxy lipid called mycolic acid in their
cell walls.
Acid-fast staining is important in the diagnosis of leprosy and
tuberculosis.
Prokaryotic cells house a single circular chromosome in their
__________.
nucleoid region
Which of the following is mismatched?
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