Treatment with 'Alloxan' destroys

Neurons of people suffering from diabetes insipidus do not secrete

Which of the following diseases is not related to the circulatory system?

Given below are two statements.
Statement $I$: Diabetes mellitus is seen in adults only.
Statement $II$: Diabetes mellitus is due to facilitated excessive movement of glucose into cells by insulin.
In light of the above statements,select the correct answer from the options given below.

Which of the following genetic disorders is often associated with heart disease?

Diabetes mellitus occurs only when: