The tail of which histone/s is able to contact an H2A-H2B dimer in an adjacent nucleosome, which may contribute to the formation of higher order structures

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#Question id: 10703

#Unit 10. Ecological Principles

Keystone predators can maintain species diversity in a community if they

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#Question id: 23893

#Unit 13. Methods in Biology

Which technique is the best for providing spatial information about gene expression in a tissue or organisms?

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#Question id: 19237

#Unit 12. Applied Biology

A type of structure, which may act as a transcription termination signal is

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#Question id: 12721

#Unit 6. System Physiology – Plant

There are the five groups of late embryogenesis abundant (LEA) proteins found in plants

Match the following groups of LEA protein with its functional information;

Group (family name)	Functional information
I) Group 1    (D-19 family)	a) It is an abundant protein in cotton embryos, Each putative dimer of this group may bind as many as ten inorganic phosphates and their counterions
II) Group 2     (D-11 family)	b) Possibly functions in ion sequestration to protect cytosolic metabolism When LE25 is expressed in yeast, it confers salt and freezing tolerance
III) Group 3      (D-7 family)	c) In tomato, a gene encoding a similar protein is expressed in response to nematode feeding
IV) Group 4     (D-95 family)	d) Contains more water of hydration than typical globular proteins Overexpression confers water deficit tolerance on yeast cells
V) Group 5     (D-113 family)	e) Often localized to the cytoplasm or nucleus More acidic members of the family are associated with the plasma membrane May act to stabilize macromolecules at low water potential

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#Question id: 1097

#Unit 4. Cell Communication and Cell Signaling

A signal transmitted via phosphorylation of a series of proteins is generally associated with which of the following events?