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Home Q & A Board Biology-Related Homework Help Medicine Immunology
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Which of the following is a difference between PCR and RT-PCR?
Which of the following is a difference between PCR and RT-PCR?
Which of the following is a difference between PCR and RT-PCR?
 
  a. RT-PCR amplifies much larger quantities of DNA than PCR
  b. RT-PCR DNA is converted into RNA
  c. RT-PCR RNA is converted into cDNA
&
aleja98   142   2 Replies
6 years ago
Single nucleotide polymorphisms are (Multiple Choice)
Single nucleotide polymorphisms are (Multiple Choice)
Single nucleotide polymorphisms are
 
  a. mutations that occur in a single individual
  b. nucleic acid probes that can detect mutations in different sequences of DNA
  c. sites in the genome where the DNA se
malagonvarney   111   1 Reply
6 years ago
One of the major drawbacks of amplification techniques is that they
One of the major drawbacks of amplification techniques is that they
One of the major drawbacks of amplification techniques is that they
 
  a. are much more costly than hybridization techniques
  b. are not as sensitive as blotting techniques
  c. can easily produce false posi
country3313   124   1 Reply
6 years ago
The branched DNA test (bDNA)
The branched DNA test (bDNA)
The branched DNA test (bDNA)
 
  a. involves the use of special oligonucleotides extenders
  b. is used in FISH to visualize DNA in a particular tissue
  c. allows the sequencing of a stretch of DNA by bypassi
hockeyguy9   93   1 Reply
6 years ago
In RNA, adenine binds to:
In RNA, adenine binds to:
In RNA, adenine binds to:
 
  a. guanine
  b. thymine
  c. uracil
  d. cytosine
agilleland   136   1 Reply
6 years ago
In DNA, thymine binds to:
In DNA, thymine binds to:
In DNA, thymine binds to:
 
  a. guanine
  b. adenine
  c. uracil
  d. cytosine
malagonvarney   138   1 Reply
6 years ago
In general, to be highly specific for a particular stretch of DNA, probes must contain at least ...
In general, to be highly specific for a particular stretch of DNA, probes must contain at least ...
In general, to be highly specific for a particular stretch of DNA, probes must contain at least
 
  a. 5 bases
  b. 7 bases
  c. 20 bases
  d. 100 bases
cillapris   104   1 Reply
6 years ago
The advantage of non-PCR amplification techniques over PCR is that non-PCR amplification techniques ...
The advantage of non-PCR amplification techniques over PCR is that non-PCR amplification techniques ...
The advantage of non-PCR amplification techniques over PCR is that non-PCR amplification techniques can
 
  a. amplify much larger stretches of DNA
  b. be carried out at a constant temperature
  c. be used on
Abisf   146   1 Reply
6 years ago
Which of the following techniques enables the identification of a particular sequence of nucleic ...
Which of the following techniques enables the identification of a particular sequence of nucleic ...
Which of the following techniques enables the identification of a particular sequence of nucleic acid on a cell or tissue?
 
  a. northern blot
  b. western Blot
  c. FISH
  d. southern blot
Argentina   116   2 Replies
6 years ago
The major difference between southern blotting and northern blotting is that
The major difference between southern blotting and northern blotting is that
The major difference between southern blotting and northern blotting is that
 
  a. southern blotting can analyze much larger pieces of DNA
  b. northern blotting can detect DNA on a living cell or tissue
  c.
QiTian   165   1 Reply
6 years ago
Denaturation or melting DNA refers to
Denaturation or melting DNA refers to
Denaturation or melting DNA refers to
 
  a. converting DNA into a liquid form so it can be separated by electrophoresis
  b. creating RNA/DNA hybrid molecules
  c. separating a DNA sequence into individual am
mcke   116   1 Reply
6 years ago
Which of the following hybridization techniques does not require separation of different fragments ...
Which of the following hybridization techniques does not require separation of different fragments ...
Which of the following hybridization techniques does not require separation of different fragments of nucleic acids?
 
  a. northern blot
  b. dot blot
  c. southern blot
  d. western blot
Breionna   128   1 Reply
6 years ago
The first step in southern blotting is
The first step in southern blotting is
The first step in southern blotting is
 
  a. converting DNA into RNA
  b. cutting high molecular weight DNA into smaller pieces
  c. converting RNA into DNA
  d. radioactively labeling the DNA so it
jake08benn   111   1 Reply
6 years ago
Restriction endonucleases are (Multiple Choice)
Restriction endonucleases are (Multiple Choice)
Restriction endonucleases are
 
  a. enzymes that restrict DNA synthesis
  b. enzymes that cut DNA in specific sequences
  c. nuclear proteins that are involved in transcription
  d. components of th
bkm1   153   1 Reply
6 years ago
The process of allowing single-stranded DNA to re-form into a double-stranded form is called
The process of allowing single-stranded DNA to re-form into a double-stranded form is called
The process of allowing single-stranded DNA to re-form into a double-stranded form is called
 
  a. annealing
  b. degradation
  c. denaturation
  d. amplification
GOOD2Know17   163   1 Reply
6 years ago
An alteration in the nucleic acid sequence in which a specific restriction endonuclease cuts can be ...
An alteration in the nucleic acid sequence in which a specific restriction endonuclease cuts can be ...
An alteration in the nucleic acid sequence in which a specific restriction endonuclease cuts can be detected by
 
  a. ELISA
  b. flow cytometry
  c. RFLP
  d. FISH
ttteel   121   1 Reply
6 years ago
Making different copies of DNA during cell division is known as
Making different copies of DNA during cell division is known as
Making different copies of DNA during cell division is known as
 
  a. DNA amplification
  b. DNA replication
  c. DNA transcription
  d. DNA annealing
Omarlate   113   2 Replies
6 years ago
Packaging, organizing, and arranging the DNA in a nucleus is carried out by
Packaging, organizing, and arranging the DNA in a nucleus is carried out by
Packaging, organizing, and arranging the DNA in a nucleus is carried out by
 
  a. ribosomes
  b. chromatin proteins such as histones
  c. tRNA
  d. mRNA
aleja98   121   1 Reply
6 years ago
Synthesizing a protein using information from RNA is known as
Synthesizing a protein using information from RNA is known as
Synthesizing a protein using information from RNA is known as
 
  a. transcription
  b. translation
  c. replication
  d. transformation
howardgiles112   128   1 Reply
6 years ago
A set three of nucleotides that encodes for a specific amino acid is called
A set three of nucleotides that encodes for a specific amino acid is called
A set three of nucleotides that encodes for a specific amino acid is called
 
  a. intron
  b. histone
  c. exon
  d. codon
joker   92   1 Reply
6 years ago
Hybridization refers to (Multiple Choice)
Hybridization refers to (Multiple Choice)
Hybridization refers to
 
  a. binding a nucleic acid probe to its complementary sequence on a target nucleic acid
  b. elongating a piece of DNA during amplification
  c. opening double-stranded DNA
&nbs
Abisf   100   1 Reply
6 years ago
Transferring information from DNA to RNA involves
Transferring information from DNA to RNA involves
Transferring information from DNA to RNA involves
 
  a. transformation
  b. transcription
  c. insertion
  d. translation
mazdacx5   89   1 Reply
6 years ago
Which of the following is true regarding keeping food in a laboratory refrigerator?
Which of the following is true regarding keeping food in a laboratory refrigerator?
Which of the following is true regarding keeping food in a laboratory refrigerator?
 
  a. The food has not yet been opened.
  b. The food is in an airtight container.
  c. The food is rinsed before eating.
Jayfan25   119   1 Reply
6 years ago
Which of the following is a major difference between RNA and DNA? RNA
Which of the following is a major difference between RNA and DNA? RNA
Which of the following is a major difference between RNA and DNA? RNA
 
  a. has guanine instead of cytosine
  b. has adenine instead of cytosine
  c. has uracil instead of thymine
  d. has cytosine
haileyrasmussen   116   1 Reply
6 years ago
What should the source patient be tested for after a needlestick if he or she agrees?
What should the source patient be tested for after a needlestick if he or she agrees?
What should the source patient be tested for after a needlestick if he or she agrees?
 
  a. hepatitis A, B, C; HIV; AST/ALT; and alkaline phosphatase
  b. hepatitis B and C, HIV, AST/ALT, and alkaline phosphatase
ttteel   88   2 Replies
6 years ago
If a tube of blood breaks in the centrifuge, the policy is to
If a tube of blood breaks in the centrifuge, the policy is to
If a tube of blood breaks in the centrifuge, the policy is to
 
  a. open the centrifuge immediately and clean it
  b. wait 10 minutes and then open the centrifuge to clean it
  c. wait 20 minutes and then ope
mbhound   113   1 Reply
6 years ago
What is an MSDS? (Multiple Choice)
What is an MSDS? (Multiple Choice)
What is an MSDS?
 
  a. a document that contains the reactivity and toxicity information about a material
  b. a document that contains the proper first aid in case of exposure to a chemical
  c. a document th
retard23   76   1 Reply
6 years ago
OSHA requires that employers offer which of these vaccines to hospital employees who may be at risk ...
OSHA requires that employers offer which of these vaccines to hospital employees who may be at risk ...
OSHA requires that employers offer which of these vaccines to hospital employees who may be at risk for
 
  a. hepatitis A
  b. hepatitis B
  c. hepatitis C
  d. HIV
meaganec   84   1 Reply
6 years ago
Gloves should be worn when anyone in the lab
Gloves should be worn when anyone in the lab
Gloves should be worn when anyone in the lab
 
  a. handles body fluids, blood and excreta
  b. handles potentially contaminated items
  c. opens drawers and doors in the laboratory
  d. all of the a
howardgiles112   94   1 Reply
6 years ago
An injured person must have an unrestricted path to an eye wash station of less than what distance? ...
An injured person must have an unrestricted path to an eye wash station of less than what distance? ...
An injured person must have an unrestricted path to an eye wash station of less than what distance?
 
  a. 10 feet
  b. 20 feet
  c. 50 feet
  d. 100 feet
bwebb03   84   1 Reply
6 years ago
The National Fire Protection Association Diamond has
The National Fire Protection Association Diamond has
The National Fire Protection Association Diamond has
 
  a. 4 parts: flammability, reactivity, special risks, and health risks
  b. 5 parts: flammability, reactivity, special and health risks, and infectivity
 
darrellsia   114   1 Reply
6 years ago
Which of the following would have HEPA filtered air blowing into the hood?
Which of the following would have HEPA filtered air blowing into the hood?
Which of the following would have HEPA filtered air blowing into the hood?
 
  a. a chemical containment hood
  b. a biological containment hood
  c. both A and B
  d. none of the above
joker   105   1 Reply
6 years ago
Which of the following would not be procedure under universal precaution guidelines?
Which of the following would not be procedure under universal precaution guidelines?
Which of the following would not be procedure under universal precaution guidelines?
 
  a. cleaning up spills with 10 bleach
  b. wearing a lab coat in all areas in the hospital
  c. washing hands after but n
howardgiles112   74   2 Replies
6 years ago
What is the most common way for needlestick accidents to occur?
What is the most common way for needlestick accidents to occur?
What is the most common way for needlestick accidents to occur?
 
  a. drawing blood from a child
  b. drawing blood from a prisoner
  c. recapping a needle
  d. disposing of trash from a hospital la
hockeyguy9   81   1 Reply
6 years ago
If you are female, and receive a needlestick you should be tested for the following in the clinic ...
If you are female, and receive a needlestick you should be tested for the following in the clinic ...
If you are female, and receive a needlestick you should be tested for the following in the clinic
 
  a. antibody to hepatitis B surface antigen, HIV, hepatitis C, and tetanus
  b. hepatitis B surface antigen, HIV, hepa
malagonvarney   84   1 Reply
6 years ago
The rate of seroconversion to HIV after a needle stick is _____, and the rate after a mucous ...
The rate of seroconversion to HIV after a needle stick is _____, and the rate after a mucous ...
The rate of seroconversion to HIV after a needle stick is _____, and the rate after a mucous membrane exposure is _________.
 
  a. 10, lower
  b. 10, higher
  c. 0.3, lower
  d. 0.5, lower
jeanettedavis84   119   1 Reply
6 years ago
Liquid nitrogen (Multiple Choice)
Liquid nitrogen (Multiple Choice)
Liquid nitrogen
 
  a. is inert and safe
  b. is dangerous because it can replace the oxygen in the room
  c. is explosive
  d. B and C
jeanettedavis84   70   1 Reply
6 years ago
Risk assessment for HIV seroconversion in determining postexposure prophylaxis has
Risk assessment for HIV seroconversion in determining postexposure prophylaxis has
Risk assessment for HIV seroconversion in determining postexposure prophylaxis has
 
  a. 3 components: (1) your general health, (2) the type of exposure-needle stick or mucous membrane-and (3) the source patient's HIV health sta
retard23   86   1 Reply
6 years ago
Source patients should be tested for the following
Source patients should be tested for the following
Source patients should be tested for the following
 
  a. if they give their consent, HIV, hepatitis B, hepatitis C, AST/ALT, and alkaline phosphatase levels
  b. if consent is not needed, HIV, hepatitis B, hepatitis C,
bkm1   75   1 Reply
6 years ago
After a needlestick in the employees clinic, a lab technician
After a needlestick in the employees clinic, a lab technician
After a needlestick in the employees clinic, a lab technician
 
  a. will immediately take you to the laboratory so you can reenact how it happened
  b. will ask you for the lot number of the needle or other medical ins
sarthaknitw   88   1 Reply
6 years ago
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