23. Which statement best describes what is happening in the cell above?
O The cell is in anaphase because the sister chromatids have separated.
O The cell is in metaphase because the chromosomes have replicated.
O The cell is in prophase because the sister chromatids have condensed.
O The cell is in telophase because the chromosomes are still paired.

What do nitrifying bacteria convert

Been sitting here trying to take this test and don't know this answer! place the events of a feedback mechanism associated with body temperature in the correct order. ·nerve cells send message from skin to the brain ·body returned to normal temperature around 98.6 degrees f ·temperatures regulation center in the brain sends out signals ·body temperature exceeds 98.6 degrees f ·sweat glands throughout the body activate to cool off skin surface it is a 1 through 5 question in biology!

Protein and polypeptide sequences can be determined by first partially hydrolyzing the protein or polypeptide followed by amino acid sequencing of the fragment pieces using the chemical degradation process known as edman degradation. determine the sequence of the initial (18-amino acid) polypeptide that produces the following five partial sequences after hydrolysis and edman degradation.