The Nobel Prize for Medicine was awarded for confirming the role of $Helicobacter \text{ } pylori$ in causing:

Which part of the digestive system is affected in celiac disease?

Give the names of diseases caused due to disorders of the digestive tract.

Match the diseases in Column-$I$ with their symptoms in Column-$II$. Select the correct answer from the options given below.

Column-$I$	Column-$II$
$i$. Jaundice	$a$. Associated with nauseatic feeling.
$ii$. Diarrhoea	$b$. Difficulty in defaecation.
$iii$. Vomiting	$c$. Yellowness of conjunctiva of eyes.
$iv$. Constipation	$d$. Blood in stool.

The abnormal frequent movement of the bowel and increased liquidity of the faeces is called:

Given below are two statements.
Statement $I$: Fat-soluble bilirubin is toxic to brain cells.
Statement $II$: Yellowness of the conjunctiva of eyes and skin,whitish stool,etc.,are some of the symptoms of jaundice.