Every cell has a cytoplasm
The answers are
1. nitrogenous
2. acid-base
3. fluid
The number of electrons in the outermost shell of an atom
Temperature and pH levels are both correct
If i'm not mistaken amino acids can be used in our body to fuel a process in which cell replication occurs and DNA is made. So to use amino acids as fuel you would have to make sure everything is in correct order and lines up correctly from the time it's released from the nucleus to a ribosome.