Nitrogen (N) normally forms three covalent bonds with a valence of five. However, ammonium has four covalent bonds, each to a different hydrogen (H) atom (H has a valence of one). What do you predict to be the charge on ammonium?

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#Question id: 23325

#General Aptitude

Case-study collects the data from the following sources

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#Question id: 21807

#Unit 12. Applied Biology

Which one of the following sensors measures the change in potential?

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#Question id: 4366

#Unit 3. Fundamental Processes

Which of the following is the correct order of addition of general transcription factors to the initiation complex?

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#Question id: 16319

#Unit 7. System Physiology – Animal

What is distress?

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#Question id: 19688

#Unit 13. Methods in Biology

Which kind of event is represented by the T wave on the ECG recording?