In normal kidneys, which of the following is true of the osmolarity of renal tubular fluid that flows through the early distal tubule in the region of the macula densa?

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#Question id: 12104

#Unit 10. Ecological Principles

Two barnacles, Balanus and Chthamalus, can both survive on the lower rocks just above the low-tide line on the Scottish coast, but only Balanus actually does so, with Chthamalus adopting a higher zone. Which of the following best accounts for this niche separation?

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#Question id: 878

#Unit 1. Molecules and their Interaction Relevant to Biology

Can a peptide bind more strongly to an unfolded than the same protein in a folded state?

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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: 19010

#Unit 13. Methods in Biology

If a molecule separated on their biological affinity, which chromatography is used

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#Question id: 2450

#Unit 2. Cellular Organization

Which of the following contribute(s) to pole separation during anaphase B?

a. cytosolic dynein     

b. a (-) end-directed kinesin               

c. CENP-E                     

d. microtubule depolymerisation                   

e. microtubule polymerization