National Certified Addiction Counselor, Level I (NCAC I) Practice Exam

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THC is most concentrated in which of the following forms of cannabis?

  1. Regular marijuana

  2. Hashish

  3. Marinol

  4. Sensemilla

The correct answer is: Sensemilla

The concentration of THC, which is the psychoactive component of cannabis, is highest in sensimilla. Sensimilla refers to a flowering marijuana plant that has not been pollinated, leading to the development of highly resinous buds that are rich in cannabinoids, including THC. This method of cultivating cannabis maximizes THC levels because the absence of seeds allows the plant to focus more energy on producing flowers and trichomes, which contain the highest concentration of THC. Regular marijuana can vary significantly in THC content depending on the strain and growing conditions. Hashish, while concentrated as well, is made by compressing the trichomes of cannabis, which can also yield high THC levels but typically does not surpass those found in quality sensimilla. Marinol, on the other hand, is a synthetic form of THC used as a medication, which does not originate from the cannabis plant itself and is not compared directly to the natural concentrations found in the plant forms. Therefore, sensimilla stands out as the form of cannabis with the highest natural THC concentration due to its cultivation process and lack of pollination.