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Microbiology Fundamentals 4th Edition Cowan
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Microbiology Fundamentals: A Clinical Approach 3rd Edition by Marjorie Kelly Cowan , Heidi Smith (test bank)
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Test Bank For Microbiology Fundamentals A Clinical Approach, 3rd Edition by Cowan, Consists of 22 Complete Chapters, ISBN: 978-1259709227
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Test Bank - for Microbiology Fundamentals A Clinical Approach 3rd Edition by Marjorie Kelly Cowan, All Chapters | Complete Guide A+
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Test Bank For Microbiology Fundamentals 4th Edition Cowan| 9781260702439 | All Chapters with Answers and Rationals
The _____ is all of the genetic material of a cell - ANSWER: genome
A nucleosome is a linear chromosome wound around the _____ - ANSWER: histone
A _____ is a specific segment of DNA that codes for the production of one functional product. -
ANSWER: gene
The expression of genetic traits is referred to as the organism's _____ - ANSWER: phenotype
The DNA of an organism is made up of subunits called _____ - ANSWER: nucleotides
Which is incorrect about purines?
a)always paired with a specific pyrimidine
b)are nitrogenous bases
c)found within nucleotides
d)include adenine and guanine
e)only found in DNA, not in RNA - ANSWER: only found in DNA, not in RNA
The antiparallel arrangement within DNA molecules refers to _____ - ANSWER: one helix strand that
runs from the 5' to 3' direction and the other strand runs from 3' to 5' direction.
All of the following pertain to nitrogenous bases EXCEPT
a)adenine pairs with thymine
b)allows variation from one nucleotide to another which creates the encoded information
c)cytosine and thymine are pyrimidines
d)form pairs by hydrogen bonding
e)guanine pairs with uracil - ANSWER: guanine pairs with uracil
Each nucleotide is composed of _____ - ANSWER: one phosphate, one nitrogenous base, and one
sugar
Base pairs in DNA are held together by _____ bonds - ANSWER: hydrogen
The duplication of a cell's DNA is called _____ - ANSWER: replication
Structural genes code for _____ - ANSWER: cellular proteins
During replication, each parent DNA strand serves as a _____ for synthesis of new DNA strands -
ANSWER: template
Semiconservative replication refers to _____ - ANSWER: an original parent DNA strand and one newly
synthesized DNA strand comprising a new DNA molecule
DNA polymerase III _____ - ANSWER: synthesizes new DNA only in the 5' to 3' direction
Okazaki fragments are attached to the growing end of the lagging strand by _____ - ANSWER: DNA
ligase
The enzyme that helps pack DNA into the cell by coiling the DNA into a tight bundle is _____ -
ANSWER: DNA gyrase
, The enzyme that can proofread replicating DNA, detect incorrect bases, excise them, and correctly
replace them is _____ - ANSWER: DNA polymerase
The site where the old DNA strands separate and new DNA strands will be synthesized is called the
_____ - ANSWER: replication fork
Helicase ____ - ANSWER: unwinds DNA
DNA gyrase _____ - ANSWER: supercoils DNA
DNA polymerase I _____ - ANSWER: removes primers
DNA polymerase III _____ - ANSWER: proofreads new DNA
A permanent, inheritable change in the genetic information is called a/an _____ - ANSWER: mutation
Replication of DNA begins at a/an _____ rich area - ANSWER: adenine-thymine
A primer comprised of _____ is needed at the origin of nucleotide addition - ANSWER: RNA
Groups of three consecutive bases along the DNA of a gene have the code for one _____ - ANSWER:
amino acid
The three-base sequence on DNA that codes for an amino acid is called a/an _____ - ANSWER: triplet
The RNA molecules that carry amino acids to the ribosomes during protein synthesis are called _____
- ANSWER: transfer RNA
This molecule is translated into an amino acid sequence - ANSWER: messenger RNA
RNA molecules differ from DNA molecules because only RNA _____
a)does not have thymine
b)has ribose
c)has uracil
d)is typically one strand of nucleotides
e)all of the choices are correct - ANSWER: all of the choices are correct
Which of the following is NOT a type of microRNA?
a)antisense RNA
b)miRNA
c)riboswitch
d)siRNA
e)tRNA - ANSWER: tRNA
All of the following pertain to transcription EXCEPT
a)a process used in the synthesis of protein
b)occurs before translation
c)occurs on a ribosome in the cytoplasm
d)requires a template DNA strand
e)requires RNA polymerase - ANSWER: occurs on a ribosome in the cytoplasm
The nontranscribed region of DNA to which RNA polymerase binds to initiate transcription is called
the _____ - ANSWER: promoter
RNA polymerase binds to the _____ - ANSWER: promoter sequence
Which of the following is incorrect about transfer RNA?
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