Which one of the following depressants is an opioid?

a. morphine
b. methadone
c. heroin
d. methalqualone

my answer was (d. methalqualone) and my school penn foster said i was incorrect! plz

Which of these is a form of risk glorification found in media a. characters endorsing risky behavior b. character condemning risky behavior c. portrayals of risk behavior leading to death d. character permanently changed by ricky behavior

What causes fermentation a. antibodies b. antigens c. microorganisms d. antibiotics

Insulin is a peptide therapeutic used to manage type 1 diabetes, which affects more than 20 million people worldwide according to the international diabetes federation. a significant limitation to the broad distribution and use of insulin to treat type 1 diabetes is the fact that it must be administered by injection rather than orally. why is insulin administered by injection and not orally?