Protein folding is not a completely random, trial-and-error process, This problem was first pointed out by

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#Question id: 2756

#Unit 2. Cellular Organization

The major protein components of chromatin referred as:

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#Question id: 19074

#Unit 6. System Physiology – Plant

ETI causes__

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#Question id: 11563

#Unit 7. System Physiology – Animal

Hormones secreted by the posterior pituitary gland are made in the ________.

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#Question id: 18645

#Unit 13. Methods in Biology

SDS PAGE separate molecules by size because the presence of SDS (sodium dodecyl sulphate) denatures the protein removing 2˚, 3˚ and 4˚ structures (they assume a linear chain) and the SDS coats the molecules giving them a uniform charge/mass ratio. In an experiment (SDS-PAGE) with a discontinuous buffer system following band pattern is obtained 

   

Choose the correct statement regarding this band pattern

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#Question id: 12232

#Unit 10. Ecological Principles

White-breasted nuthatches and Downy woodpeckers both eat insects that hide in the furrows of bark in hardwood trees. The Downy woodpecker searches for insects by hunting from the bottom of the tree trunk to the top, while the White-breasted nuthatch searches from the top of the trunk down. These hunting behaviours best illustrate which of the following ecological concepts?