Which arm of the tRNA can act as a structural recognition feature?

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#Question id: 2944

#Unit 2. Cellular Organization

DNA replication at each origin occurs only once during the cell cycle because of:

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#Question id: 12545

#Unit 10. Ecological Principles

Nitrogen is available to plants only in the form of

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#Question id: 11046

#Unit 7. System Physiology – Animal

Which of the following has the fastest rate of movement across the capillary wall?

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#Question id: 12392

#Unit 6. System Physiology – Plant

 According to the acid growth hypothesis, the source of the hydrogen ions is the plasma membrane H+-ATPase, whose activity is thought to increase in response to

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#Question id: 24274

#Unit 2. Cellular Organization

Nucleosome DNA wraps around the histone protein 1.65 times, so create a writhe of –1.65 and so DLk should be -1.65. But when the change in linking number associated with each nucleosome was measured, the number was lower than this, approximately –1.2 for each nucleosome added. This discrepancy is referred to as the