Psychoactive drug use can be traced to prehistory. There is archaeological evidence of the use of psychoactive substances (mostly plants) dating back at least 10,000 years, and historical evidence of cultural use over the past 5,000 years.here are many ways in which psychoactive drugs can affect the brain. Each drug has a specific action on one or more neurotransmitter or neuroreceptor in the brain. Drugs that increase activity in particular neurotransmitter systems are called agonists.
Which of the following is NOT an example of malware? a. adware c. rootkits b. vaporware d. zombies ANS: B PTS: 1 REF: 23 OBJ: 7 32. Which of the following is the term for known specific patterns of viruses? a. virtual viruses c. virus signatures b. virus traces d. virus items ANS: C PTS: 1 REF: 23 OBJ: 7 33. Which of the following is NOT a strategy that supports green computing? a.
An icosahedral virus is a virus consisting of identical subunits that make up equilateral triangles that are, in turn, arranged in a symmetrical fashion. A special type of icosahedral shape, called a prolate, is a variant of the icosahedral viral shape and is found in bacteriophages.rtem is a doctor of veterinary medicine and has taught science and medicine at the college level. Learn about the different shapes viruses can have, such as helical, icosahedral, prolate, complex and enveloped. Find out why one shape is particularly useful from an energetic standpoint.