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BIOL 1105 chapter 26 with 100- correct answers(graded A+). $14.99   Add to cart

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BIOL 1105 chapter 26 with 100- correct answers(graded A+).

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  • Course
  • Biology 1105
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  • Biology 1105

BIOL 1105 chapter 26 with 100- correct answers(graded A+).

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  • October 8, 2024
  • 18
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Biology 1105
  • Biology 1105
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BIOL 1105 chapter 26 with
100% correct answers(graded
A+)
three ways prokaryotes take up DNA from environment - answer 1)
transformation
2) transduction
3) conjugation


transformation - answer the take-up of DNA from the environment


transduction - answer the viral transfer or DNA between microbes


conjugation - answer the transfer of genetic information by direct
cell-to-cell contact


plasmid - answer small, circular piece of DNA located in the
cytoplasm of many bacteria


conjugation tube - answer cytoplasmic connection between two
bacterial cells through which DNA passes during conjugation


True or False: Plasmids usually carry accessory genes that aren't
required for normal growth but can confer advantageous traits to a
bacterium such as antibiotic resistance. - answer true


True or False: Sometimes chromosomal DNA can be transferred to a
recipient cell if the plasmid DNA became incorporated into the
chromosomal DNA of the donor cell. - answer True

,True or False: Two common ways to organize groups of prokaryotes
are 1) based on what they look like (morphology) and 2) what type
of metabolism and chemical reactions they perform. - answer True


True or False: Prokaryotes come in a wide variety of sizes and
shapes. - answer True


True or False: Prokaryotes can be motile but some are not. - answer
True


spirillum - answer spiral shaped bacteria


coccus - answer round or sphere shaped bacteria


bacillus - answer rod shaped bacteria


strepto - answer chains of bacterial cells


staphylo - answer grape-like clusters of bacterial cells


diplo - answer bacteria arranged in pairs or groups of two


tetrad - answer bacteria arranged in groups of four


sarcina - answer bacteria arranged in groups of 8


flagella - answer a long, rotating filament that helps a bacterial cell
move

, True or False: All bacteria have at least one flagella. - answer False


True or False: Bacterial flagella move like a propeller helping the
bacteria to move. - answer True


True or False: Depending on the direction of flagellar rotation, the
bacterial cell either swims ahead or tumbles, which allows it to
change directions. - answer True


True or False: The cell walls are different in bacteria and archaea. -
answer True


peptidoglycan - answer found in the cell walls of bacteria


isoprene - answer found in the cell wall of archaea


Gram stain - answer a staining method that distinguishes between
two different kinds of bacterial cell walls


Gram positive - answer describing the group of bacteria that have
a cell wall that is structurally less complex and contains more
peptidoglycan than the cell wall of Gram-negative bacteria; stains
"purple" in the Gram stain


Gram negative - answer describing the group of bacteria that have
a cell wall that is structurally more complex and contains less
peptidoglycan than the cell wall of Gram-positive bacteria; stains
"pinkish/red" in the Gram stain


True or False: Bacteria range in size from almost as small as a virus
to over a billion times larger than the smallest. - answer True

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