Biology · May / June 2019 · Paper 11 · Question 25

Which statements about the use of heroin are correct?

1. Aaddiction occurs as higher and higher doses are needed to get the same effect: no; everybody who takes a dose of heroin becomes an addict: yes; tolerance to heroin means a user can survive higher and higher doses: no; medical assistance is always necessary to withdraw from heroin addiction: no
2. Baddiction occurs as higher and higher doses are needed to get the same effect: yes; everybody who takes a dose of heroin becomes an addict: no; tolerance to heroin means a user can survive higher and higher doses: yes; medical assistance is always necessary to withdraw from heroin addiction: no
3. Caddiction occurs as higher and higher doses are needed to get the same effect: yes; everybody who takes a dose of heroin becomes an addict: no; tolerance to heroin means a user can survive higher and higher doses: no; medical assistance is always necessary to withdraw from heroin addiction: yes
4. Daddiction occurs as higher and higher doses are needed to get the same effect: no; everybody who takes a dose of heroin becomes an addict: yes; tolerance to heroin means a user can survive higher and higher doses: yes; medical assistance is always necessary to withdraw from heroin addiction: yes

As printed in the paper