Who first realized the use of yeast in fermentation?

$A$ scientist associated with the discovery of the first 'antibiotic' is

Which one of the following pairs is correctly matched?

Who was the first discoverer of penicillin?

The chemotherapeutic importance of penicillin was given by .....

Identify the correct statements with respect to antibiotics:
$(i)$ Fleming,Chain,and Florey were awarded the Nobel Prize in $1945$.
$(ii)$ Antibiotics have greatly improved our capacity to treat deadly diseases.
$(iii)$ Penicillin was used to treat American soldiers wounded in World War $I$.