Which of the following statements is true of a panic attack?

Which of the following statements is true of a panic attack?




A. It is characterized by mental depression related to a certain season of the year.
B. It is a mood disorder in which an individual experiences loss of energy and excessive guilt.
C. It is a persistent and irrational fear of a specific situation that creates an intense desire to avoid the feared stimulus.
D. It is an unexpected and unprovoked emotionally intense experience of terror.



Answer: 

Which of the following statements is true of obsessive-compulsive disorder?

Which of the following statements is true of obsessive-compulsive disorder? 




A. It is characterized by a numbing of general responsiveness, insomnia, and increased aggression.
B. It affects any individual who has experienced a psychologically traumatic event.
C. It is treated by constantly shifting the routines of affected individuals.
D. It is characterized by behavior that involves engaging in unreasonable repetitive acts.



Answer: 

A poorly immunogenic vaccine often suggests the foreign proteins were not properly recognized by the immune system due to a lack of ________ necessary, which can also be engineered to occur with additional molecular manipulations.

A poorly immunogenic vaccine often suggests the foreign proteins were not properly recognized by the immune system due to a lack of ________ necessary, which can also be engineered to occur with additional molecular manipulations.




A) complex folding
B) methylation
C) glucosylation
D) glycosylation



Answer: 

Recognizing pathogens that contain multiple unique proteins which enable the human immune system to recognize just one and mount an effective response has opened the door on development of some vaccines only being

Recognizing pathogens that contain multiple unique proteins which enable the human immune system to recognize just one and mount an effective response has opened the door on development of some vaccines only being




A) attenuated carrier viruses.
B) monovalent.
C) subunit vaccines.
D) purified protein administered.



Answer: 

Polyvalent vaccines using vaccinia virus are highly favored by doctors and physicians but are especially challenging for those who develop them, because

Polyvalent vaccines using vaccinia virus are highly favored by doctors and physicians but are especially challenging for those who develop them, because 




A) coat proteins form a relatively rigid structure and do not allow much space for additional proteins to be expressed.
B) multiple foreign proteins simultaneously synthesized often disrupts each other's activity.
C) vaccinia and most other viruses engineered for vaccines contain only one restriction site for cloning in their genome.
D) virus genetic manipulation uses transfection, which is an inherently inefficient process.



Answer: 

The principle underlying how salmon were genetically engineered to grow faster is the

The principle underlying how salmon were genetically engineered to grow faster is the



A) removal of a gene responsible for feeling full after eating.
B) replacement of inducible to constitutive hormone production.
C) resistance to bacterial infections which waste metabolic energy in the salmon to fight off.
D) addition of genes to enhance blood circulation and tissue development.



Answer: 

Some proteins overexpressed at high levels resulting in the formation of inclusion bodies can abolish the goal of producing large quantities of active protein. What could be done to minimize this issue?

Some proteins overexpressed at high levels resulting in the formation of inclusion bodies can abolish the goal of producing large quantities of active protein. What could be done to minimize this issue?




A) Codon optimize the gene.
B) Decrease the number of biobricks in the vector.
C) Simultaneously produce intracellular chaperonins.
D) Switch to an expression host with a larger intracellular volume.



Answer: 

If a protein to be overexpressed is toxic to the expression host, it is best to select an expression vector that

If a protein to be overexpressed is toxic to the expression host, it is best to select an expression vector that




A) is compatible with a binary vector able to be regulated.
B) is inducible.
C) has a relatively low copy number per cell.
D) prevents folding of the overexpressed protein into its toxic form.



Answer: 

Type II restriction endonucleases

Type II restriction endonucleases



A) are heterodimers.
B) natively function to methylate specific nucleotides and prevent foreign DNA from being incorporated into the genome.
C) recognize nucleotide sequences that are palindromic.


Answer: D) require ATP energy to cleave dsDNA.

What makes eukaryotic transcripts easier to isolate than transcripts in bacteria?

What makes eukaryotic transcripts easier to isolate than transcripts in bacteria?




A) Eukaryotic transcripts are not methylated but their genes are often methylated.
B) Larger transcript size in eukaryotes enables easy size-selection methods.
C) mRNA is polyadenylated in eukaryotes.
D) Transcripts are the most abundant RNAs in eukaryotes.




Answer: 

A shuttle vector is most useful for

A shuttle vector is most useful for




A) engineering a complete metabolic pathway.
B) identifying the localization of a protein.
C) knocking out a gene by cassette displacement.
D) making a foreign protein in a mammalian cell.



Answer: 

Which of those below is NOT an important consideration when designing a fusion protein construct?

Which of those below is NOT an important consideration when designing a fusion protein construct?




A) Avoid hybridization of the fusion gene in the artificial construct.
B) Reading frame is the same for both the fusion gene and reporter gene.
C) Transcriptional start and stop signals are shared.
D) Translational start and stop signals are shared.



Answer: 

The principle behind a nucleic acid probe design is that the probe itself must contain

The principle behind a nucleic acid probe design is that the probe itself must contain




A) a key complementary part of the target gene sequence of interest.
B) all of the nucleotide sequence of the gene of interest to conclusively identify the gene.
C) an antibody to specifically bind to the gene of interest.
D) at least three separate complementary regions of the gene of interest.



Answer: 

Which statement is TRUE?

Which statement is TRUE?



A) YACs are more likely than BACs to undergo recombination and rearrangement.
B) BACs are more likely than YACs to undergo recombination and rearrangement.
C) YACs and BACs undergo recombination and rearrangement at about the same rate.
D) It is impossible to state with any certainty whether YACs or BACs are more likely to undergo recombination and rearrangement, because environmental factors play a major role in the probability of one or the other occurring.



Answer: 

Inserting a kanamycin resistance cassette into a catabolic operon to confirm the gene is essential in degradation of a particular compound would involve all of the following EXCEPT

Inserting a kanamycin resistance cassette into a catabolic operon to confirm the gene is essential in degradation of a particular compound would involve all of the following EXCEPT




A) a reporter gene.
B) ligation.
C) recombination.
D) transformation.



Answer: 

What molecular mechanism/feature does site-directed mutagenesis exploit to introduce a mutation at a specific site?

What molecular mechanism/feature does site-directed mutagenesis exploit to introduce a mutation at a specific site?




A) flanking complementary bound nucleotides permit non-complementary base pairing
B) methylated nucleotides disrupt DNA polymerase's proofreading
C) nucleotide substitution when one is depleted
D) transposase-induced base pair changes



Answer: 

Which of the following is NOT a characteristic of a type II restriction endonuclease?

Which of the following is NOT a characteristic of a type II restriction endonuclease?




A) cleavage product can be either blunt or sticky ended but is always the same for an individual enzyme
B) recognizes a specific palindromic site for cleavage
C) recognition site length varies among enzymes but is always the same for an individual enzyme
D) unable to cleave methylated DNA



Answer: 

Actionable fraud would be likely to be based on falsity of:

Actionable fraud would be likely to be based on falsity of:


a. a car owner's statement that, "This car is the best buy you will find."
b. a realtor's statement that, "The contractor used 25-year warranted shingles on the roof."
c. an art dealer's statement that, "This painting will increase in value."
d. a stockbroker's statement that, "This stock should double in price within six months."


Answer: