Microorganisms

The first person to propose that disease is due to a natural cause was
Match the Column I with Column II and choose the correct option using the codes given below.
Column IColumn II
(a) Penicillium notatum(i) Production of yoghurt
(b) Chlorella                         (ii) Nitrogen fixation
(c) Rhizobium(iii) Sewage disposal
(d) E. coli(iv) Antibiotics
(v) Production of vitamins in the large intestine
In tissue/bacterial culture glassware and nutrients are sterilised through
The bread or idli dough rises because of
In a microbiology laboratory, the technician uses heat to sterilise the nutrient solution that is used to grow 4. a fungus. When the heating system broke down, he sterilised the solution by passing It on a sterile environment) through a sterile filter with a pore size of 0.2 micrometers. When the fungus was grown on the filtered nutrient solution, it stopped growing and looked unhealthy within a few days. Which statements is the most likely explanation for the observed effects on the fungus ?