The psychologically addictive drugs are difficult to quit because they help those with mental issues.
Explanation:
The drugs help those with disorders, mental illnesses and others to cope with their difficulties. It helps them to acept their qualitites while at the same time giving them confidence that they believe they have because their can control themselves. It is like the study which had a patient who was given 2 pills, one had a drug in it the other didn't and the person didn't know which was which. The patient when taking the empty pill perhaps subconsciously believed that this pill was the one to help them and believed it had the same effect and the patient carried on as if they were on the pill that contained the drug. It was a trial to see wheather they could trick the brain into making it seem that the person was recieving the things it required to seem normal. The pill with the drug gave the body what it needed.
The complete DNA instruction book, or genome, for a human contains about 3 billion bases and about 20,000 genes on 23 pairs of chromosomes
Because carbon atoms can form stable bonds with four other atoms, they are uniquely suited for the construction of complex molecules. These complex molecules are typically made up of chains and rings that contain hydrogen, oxygen, and nitrogen atoms, as well as carbon atoms.
In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes. Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.
The gene is the basic physical and functional unit of heredity. It consists of a specific sequence of nucleotides at a given position on a given chromosome that codes for a specific protein (or, in some cases, an RNA molecule).
It isn't literal. It's a war quote meaning if you put in good and hard effort, it can save your life. In my oppinion, that can relate to more situations and circumstances in life though.
