BIOD 101 MODULE 6 EXAM STUDY GUIDE 2025/2026
QUESTIONS BANK AND CORRECT DETAILED ANSWERS
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<BRAND NEW VERSION> Portage Learning
Where do prokaryotes store genetic information? .....Answer.....a
nucleoid region, not bound by a membrane and contains
bacterial chromosomes and DNA
plasmids .....Answer.....small, circular regions of DNA; carry small
amounts of genetic information and have the ability to replicate
independently of one another
What is the intracellular region of a prokaryotic cell filled with?
.....Answer.....cytoplasm, which is responsible for suspending
ribosomes and plasmids
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Ribosomes .....Answer.....not bound by a membrane and are
smaller in comparison to the ones found in eukaryotes; the ones
of bacteria are unique in their RNA and protein content
How has the differences between eukaryotic and prokaryotic
ribosomes aided in scientific research? .....Answer.....Since
bacterial ribosomes are unique in their RNA and protein content,
it has allowed researchers to develop antibiotics that target
bacterial ribosomes specifically, thereby interfering with protein
synthesis without damaging the ribosomes of the eukaryotic host
What are the internal contents of a bacterial cell enclosed in?
.....Answer.....a semi-permeable plasma membrane, which allows
for the diffusion of certain ions and small molecules and may
also provide an area for metabolic functions for the cell
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How does aerobic respiration occur in prokaryotic cells, given
they do not contain mitochondria? .....Answer.....For bacteria that
are aerobic, the plasma membrane can be folded to provide an
area for specialized chemical reactions associated with aerobic
respiration to occur
What surrounds the plasma membrane of a prokaryotic cell?
.....Answer.....a rigid cell wall, which varies in composition, and is
a key feature of many prokaryotes; is also responsible for the
shape of a cell, and it provides protection against environmental
stressors
What are the accessory structures that facilitate movement or
attachment in bacteria (they can have one or more of the
following)? .....Answer.....(1) capsule, (2) fimbriae, or (3) flagella
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capsule (also called a glycocalyx) .....Answer.....sticky outermost
layer of a bacterial cell wall; composed of thick layers of
proteins or polysaccharides; is dense and provides a mechanism
of adhesion to host cells or to other bacteria
When does the capsule provide hydration and protection for
bacterial cells? .....Answer.....When individual bacterial cells stick
together and form a colony, it provides individual members
additional hydration and protection from the host's immune
system responses
Fimbriae (prokaryotes) .....Answer.....protein structures extending
from the cell wall that have a short, spikey, hair-like
appearance; these structures are used for attachment to host
cells or to other bacteria