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Biotechnology - 01

1-	A molecular technique in which DNA sequences between two oligonucleotide primers can be amplified is known as
	A -	southern blotting
	B -	northern blotting
	C -	polymerase chain reaction
	D -	DNA replication
2-	The Southern blotting technique depends on
	A -	similarities between the sequences of probe DNA and experimental DNA
	B -	similarities between the sequences of probe RNA and experimental RNA
	C -	similarities between the sequences of probe protein and experimental protein
	D -	the molecular mass of proteins
3-	Problems in obtaining large amounts of proteins encoded by recombinant genes can often be overcome by using
	A -	BACS
	B -	expression vectors
	C -	YACS
	D -	All of these
4-	Agrobacterium tumefaciens is
	A -	a disease in humans that causes loss of sight
	B -	a bacterium that can be used to introduce DNA into plants
	C -	a fungi that is used to produce antibiotics in large amounts
	D -	a disease in humans that causes loss of weight
5-	In genetic engineering, a chimera is
	A -	an enzyme that links DNA molecules
	B -	a plasmid that contains foreign DNA
	C -	a virus that infects bacteria
	D -	a fungi
6-	The deliberate modifications of an organism's genetic information by directly changing its nucleic acid content is a subject matter of
	A -	genetic engineering
	B -	population genetics
	C -	microbiology
	D -	protein engineering
7-	Electroporation is:
	A -	the process of separating charged molecules through a gel maintained in an electric field
	B -	the process of combining foreign DNA to an electrically charged vector molecule
	C -	the application of high voltage pulses
	D -	the process of multiplication of the cells
8-	Which of the following is obtained using processed mRNA molecules as a template?
	A -	rDNA
	B -	mDNA
	C -	cDNA
	D -	tDNA
9-	Vectors are:
	A -	molecules that degrade nucleic acids
	B -	molecules that help in replication
	C -	molecules that are able to covalently bond to and carry foreign DNA into cells
	D -	molecules that protect host cells from invasion by foreign DNA
10-	What is the normal role of restriction endonucleases in bacterial cells?
	A -	To degrade the bacterial chromosome into small pieces during replication
	B -	To degrade invading phage DNA
	C -	To produce RNA primers for replication
	D -	All of the above

[Người đăng: Thành Lãm - ST]

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