Question

Pasteurisation free food stuffs
A. All bacteria
B. All living organisms
C. Vegetative form of bacteria
D. Vegetative form of all pathogenic bacteria

Answer 1

Hint: Pasteurization the term referred to the process of sterilization. In this process the packaged as well as non-packaged food stuffs are heated with mild heat that is ${60^ \circ }C$ to $70^\circ C$ for a short duration in order to eliminate pathogens along with extending shelf-life. This process of sterilization helps to free the food stuffs from vegetative forms of all pathogenic bacteria.

Complete answer:
Option A- Bacteria are microscopic, single-celled organisms that live in diverse environments. These microorganisms can live in soil, the ocean as well as inside the human gut.
Option - B- All living organisms share several main characteristics or functions such as order, sensitivity or response to the environment, reproduction, growth along with development, regulation, homeostasis, and energy processing. When put together, these characteristics serve to define life.
Option - C – Bacteria is microscopic organisms which can live in a vegetative state in which they can grow as well as reproduce.
Option - D- Pathogenic bacteria are microscopic organisms that can cause disease. Although most bacteria are harmless or often beneficial, some are pathogenic, that are seen to cause infectious diseases in humans.

Thus, the correct answer to the question is option D- ‘Vegetative forms of all pathogenic bacteria.'

Note:
 The process of sterilization was first developed by Louis Pasteur back in the year 1864. Pasteurization is a process in which food items such as milk and fruit juice are treated with mild heat, l to eliminate pathogens and extend shelf life.