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Microbiology Fundamentals 4th Edition Cowan $17.99
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Microbiology Fundamentals 4th Edition Cowan

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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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