Reviewing of your notes should be your primary concern, then refer to subtle differences?
Answer: Ribosomes
Explanation: In eukaryotes, ribosomes get their orders for protein synthesis from the nucleus, where portions of DNA (genes) are transcribed to make messenger RNAs (mRNAs). An mRNA travels to the ribosome, which uses the information it contains to build a protein with a specific amino acid sequence.
"At the same time, circuits involved in stress become increasingly sensitive, leading to increased displeasure and negative moods when not taking the drug, which are signs of withdrawal. These combined effects make the user more likely to focus on seeking the drug instead of relationships, food, or other natural rewards." I got it from this wedsite just in case you need more info about it. https://www.drugabuse.gov/publications/research-reports/cocaine/what-are-long-term-effects-cocaine-u...
