ATP transports chemical energy within cells for metabolism. It is one of the end products of photophosphorylation, cellular respiration, and fermentation and used by enzymes and structural proteins in many cellular processes, including biosynthetic reactions, motility, and cell division.TP transports chemical energy within cells for metabolism. It is one of the end products of photophosphorylation, cellular respiration, and fermentation and used by enzymes and structural proteins in many cellular processes, including biosynthetic reactions, motility, and cell division.
Perhaps the most well known event that occurred recently on this day was in 1998 when President Clinton was impeached for lying to a grand jury about his affair with Monica Lewinski. All of this, along with more, is explained in the This Day in History Video: December 19th.
View Full Document. Only two presidents in the nationâs history have been impeached and tried in the Sen- ate. The first was Andrew Johnson in 1868, who escaped conviction in the Senate by one vote, and the second was Bill Clinton in 1998, who escaped conviction by a wider margin. Each time Congress attempts to impeach a president and fails to remove him from office, it becomes more difficult to use it as a check.