Salmonella typhi affects

Mark the correct statement

An insect bite may result in inflammation of that spot. This is triggered by the alarm chemicals such as

Cholera patient is administrated by ’saline drip' because

If you suspect major deficiency of antibodies in a person, to which of the following would you look for confirmatory evidence ?

From unripe opium fruit, the opium is extracted. From this which one of following groups of narcotic drugs are also prepared