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Biotechnology - 06

1-	A cell without cell wall is called
	A -	apoplast
	B -	protoplast
	C -	symplast
	D -	None of these
2-	Chemical energy is supplied to eukaryotic cells by
	A -	chloroplasts and golgi complexes
	B -	mitochondria and ribosomes
	C -	mitochondria only
	D -	mitochondria and chloroplasts
3-	Which part of a plant contains the male sex cell?
	A -	Ova
	B -	Style
	C -	Stamen
	D -	Pollen
4-	"The universe tends towards maximum disorder" is stated by
	A -	first law of thermodynamics
	B -	second law of thermodynamics
	C -	third law of thermodynamics
	D -	None of the above
5-	Water content of active protoplasm is
	A -	10%
	B -	40%
	C -	70%
	D -	90%
6-	Which of the following is not an electron carrier class in the electron transport chain?
	A -	Flavoproteins
	B -	Cytochromes
	C -	Iron - sulfur proteins
	D -	Cytochrome c oxidase
7-	What is the source of free energy (ΔG) for moving protons out of mitochondria against their concentration and electrical gradients?
	A -	Glycolysis
	B -	Creatine phosphate
	C -	The redox reactions of electron transport
	D -	ATP
8-	The cellular organelle associated with photosynthesis is the
	A -	golgi complex
	B -	mitochondrion
	C -	lysosome
	D -	chloroplast
9-	Cellular metabolism is an example of
	A -	equilibrium metabolism
	B -	steady-state metabolism
	C -	a series of reactions occurring under standard conditions
	D -	a series of reactions that defy the second law of thermodynamics
10-	Which of the following experimental results does not support Mitchell's chemiosmosis theory?
	A -	Electron transport in isolated mitochondria was shown to result in acidification of the medium
	B -	Addition of dinitrophenol to isolated mitochondria was shown to inhibit electron transport, but had no effect on ATP synthesis
	C -	Addition of dinitrophenol to isolated mitochondria during electron transport was shown to inhibit acidification of the medium
	D -	An artificial proton gradient across the inner mitochondrial membrane drives ATP synthesis in the absence of electron transport

[Người đăng: Thành Lãm - ST]

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