Summary GCSU Bachoon Microbiology Test 2 Exam | Practice Questions, Answers & Study Guide

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GCSU Bachoon Microbiology Test 2 Exam
Newest 2025-2026/ GCSU Bachoon
Microbiology Test 2 Preparation/GCSU
Bachoon Microbiology Test 2 Practice Exam
With Complete Questions And Correct
Detailed Answers |Already Graded A+|Brand
New Version!!

what are transposons? - ..........ANSWER.......- small segments of
DNA that can move from one chromosome to another

- in both bacteria and eukaryotes



restriction enzymes - ..........ANSWER.......- a special class of DNA cutting
enzymes that exists in many bacteria

- protect a bacterial cell by hydrolyzing phage DNA




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polymerase chain reaction (PCR) - ..........ANSWER.......- technique by
which small samples of DNA can be quickly amplified - increased to
quantities that are large enough for analysis

- starting with just one gene sized piece of DNA, PCR can be used to
make billions of copies in only a few hours



taxonomy - ..........ANSWER.......- the science of classifying living
organisms

- similar organisms are placed in the same taxa (group)



systemics or phylogeny - ..........ANSWER.......- the study of the
evolutionary history of a group of organisms

- phylogenic relationship: organism with a common ancestor



what year was the term prokaryotic introduced and what is it? -
..........ANSWER.......- 1937

- cell with no nucleus

- 2 types: bacteria, archaea



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what are the 3 domains? - ..........ANSWER.......1) eukarya

2) bacteria

3) archaea



what are the 3 domains based on? - ..........ANSWER.......- based on 165
DNA



what was one of the earliest cells found on the planet? -
..........ANSWER.......- a bacteria called Thermatoga maritina

- it has genes similar to bacteria and archaea



where can a description of bacteria be found? -
..........ANSWER.......- Bergeys Manual



what is a prokaryotic species? - ..........ANSWER.......a population of cells
with similar characteristics (>70% DNA hemology)




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strains - ..........ANSWER.......a collection of cells derived from a single
cell



prokaryotes are identified by using what? - ..........ANSWER.......-

metabolic reactions - cell wall structure


- differential staining



serology - ..........ANSWER.......- the science that studies serum and
immune responses that are evident in serum

- microorganisms are antigenic: upon entering an animals body, they
stimulate it to form antibodies



DNA base composition - ..........ANSWER.......- the moles percentage of
guanine plus cytosine in an organism's DNA

- used to draw conclusions about relatedness




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