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Biotechnology - 61

1-	Which of the following is the technique used for the embryo culture?
	A -	Organ cultures on plasma clots
	B -	Organ cultures on agar
	C -	Whole embryo cultures
	D -	All of these
2-	The major problem associated with the isolation of free cells and cell aggregates from organs is that of
	A -	releasing the cells from their supporting matrix
	B -	inhibiting the cells from their supporting matrix
	C -	disintegrating the cells from their supporting matrix
	D -	None of the above
3-	Some types of variation are due to changes in the genetic material. What is this type of change called?
	A -	Fertilisation
	B -	Mutation
	C -	Radiation
	D -	Sterilisation
4-	Which of the following is the process of choosing parent organisms for the characteristics that is wanted in their offspring?
	A -	Active selection
	B -	Reproductive selection
	C -	Selective breeding
	D -	Breeding selection
5-	Which protein has been produced generating a transgenic sheep that is used for replacement therapy for individuals at risk from emphysema?
	A -	Plasminogen activator (tPA)
	B -	α-anti trypsin (AAT)
	C -	Casein
	D -	Amyloid precursor proteins
6-	Which of the following is the word used to describe what happens when the nucleus of a sperm joins with the nucleus of an egg cell?
	A -	Fertilisation
	B -	Sex
	C -	Intercourse
	D -	Reproduction
7-	DNA into fish is injected into
	A -	pronuclei
	B -	cytoplasm
	C -	Both (a) and (b)
	D -	None of these
8-	Transgenic goats have been used to produce which of the following protein that is used for dissolving blood clots?
	A -	Amyloid precursor protein
	B -	α₁-anti trypsin (AAT)
	C -	Casein
	D -	A variant of human tissue-type plasminogen activator
9-	Transfection refers to which of the following?
	A -	Synthesis of mRNA from DNA template
	B -	Synthesis of protein based on mRNA sequence
	C -	Introduction of foreign gene in to a cell
	D -	The process by which a cell become malignant
10-	Chromosomes may be isolated from metaphase cells by
	A -	hypertonic lysis
	B -	hypotonic lysis
	C -	isotonic lysis
	D -	Either (a) or (b)

[Người đăng: Thành Lãm - ST]

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