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Biotechnology - 23

1-	Which of the following triggers the division of activated T lymphocytes?
	A -	FGF
	B -	Interlukin 2
	C -	PDGF
	D -	Erythroprotein
2-	The term, not related to mitosis is
	A -	gametes
	B -	chromosomes
	C -	DNA replication
	D -	somatic cells
3-	What structure forms as a network of protein cables during cell division?
	A -	Spindle
	B -	Aster
	C -	Kinetochore
	D -	Chromatid
4-	A centromere is
	A -	another name for kinetochore
	B -	the structure to which microtubules attach
	C -	a constriction on a chromosome bound to a disk
	D -	All of the above
5-	Which of the following statements about mitosis is incorrect?
	A -	The daughter nuclei are genetically identical to the parent nucleus
	B -	Chromosomes separate during anaphase due to the interaction of polar microtubules from opposite poles pushing against each other
	C -	Chromosomes separate during anaphase when the kinetochore microtubules shorten as they depolymerize
	D -	Chromosomes move to the metaphase plate using motor proteins, a kind of kinesin, attached to spindle fibers
6-	Cdks bind with __________ , enabling the Cdks to function as enzymes.
	A -	MPF
	B -	cyclins
	C -	histones
	D -	p⁵³
7-	Which of the following is not a part of a human chromosome in any phase?
	A -	Centriole
	B -	Histone
	C -	Nucleosome
	D -	Centromere
8-	During which phase, a cleavage furrow is formed in animal cells?
	A -	C
	B -	G₁
	C -	G₂
	D -	M
9-	In which phase, each chromosome replicates to produce two sister chromatids?
	A -	Anaphase
	B -	Interphase
	C -	Metaphase
	D -	Prophase
10-	Microtubules grow from the poles to kinetochores of each chromatid during
	A -	prophase
	B -	metaphase
	C -	anaphase
	D -	telophase

[Người đăng: Thành Lãm - ST]

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