BIO PORTAGE
FINAL PRE AND
TEST MODULE 6
WITH QUESTIONS
AND ANSWERS.
[Document subtitle]
, Discuss the difference in how prokaryotic and eukaryotic cells store their
genetic material. - correct ans:eukaryotic cells store DNA in a membrane
bound nucleus and prokaryotic cells store their DNA in a nucleic region which
isn't membrane bound
List TWO similarities between prokaryotic and eukaryotic cells. - correct
ans:both have plasma membrane that acts as semipermeable barrier,
contain cytosol to suspend intracellular components, contain chromosomes
with DNA, contain ribosomes to manufacture proteins necessary for life
Describe the role of the cell wall in a bacterial cell. - correct ans:key for
shape of cell and provides protection against environmental stressors
List THREE accessory structures that facilitate movement and attachment in
bacteria. - correct ans:capsule, fimbriae, flagella
Compare and contrast Gram-positive and Gram-negative bacteria regarding
the amount of peptidoglycan present in their cell walls. - correct ans:gram
positive bacteria have thick layer of peptidoglycan and gram negative have a
thin layer of peptidoglycan
Describe the Gram-stain process. - correct ans:1) sample of bacterial in
question is stained with crystal violet dye and iodine
2) sample is rinsed with alcohol to remove unbound dyes
3) sample is stained again with a red dye
-properties of cell wall show how dye change color of cell and type of
bacteria is made when stained cells are viewed under microscope
List and describe the most common bacterial shapes. - correct ans:cocci:
spherical shape
FINAL PRE AND
TEST MODULE 6
WITH QUESTIONS
AND ANSWERS.
[Document subtitle]
, Discuss the difference in how prokaryotic and eukaryotic cells store their
genetic material. - correct ans:eukaryotic cells store DNA in a membrane
bound nucleus and prokaryotic cells store their DNA in a nucleic region which
isn't membrane bound
List TWO similarities between prokaryotic and eukaryotic cells. - correct
ans:both have plasma membrane that acts as semipermeable barrier,
contain cytosol to suspend intracellular components, contain chromosomes
with DNA, contain ribosomes to manufacture proteins necessary for life
Describe the role of the cell wall in a bacterial cell. - correct ans:key for
shape of cell and provides protection against environmental stressors
List THREE accessory structures that facilitate movement and attachment in
bacteria. - correct ans:capsule, fimbriae, flagella
Compare and contrast Gram-positive and Gram-negative bacteria regarding
the amount of peptidoglycan present in their cell walls. - correct ans:gram
positive bacteria have thick layer of peptidoglycan and gram negative have a
thin layer of peptidoglycan
Describe the Gram-stain process. - correct ans:1) sample of bacterial in
question is stained with crystal violet dye and iodine
2) sample is rinsed with alcohol to remove unbound dyes
3) sample is stained again with a red dye
-properties of cell wall show how dye change color of cell and type of
bacteria is made when stained cells are viewed under microscope
List and describe the most common bacterial shapes. - correct ans:cocci:
spherical shape
