P1. Tyndall & Cohn.

Question 1

Discovery of SPORES & STERILIZATION:

Answer 1

1. John Tyndall
2. Ferdinand Cohn

Question 2

• microbes in dust and air have very high heat resistance and that vigorous treatment is required to destroy them.
• TYNDALLIZATION: repeat process of heating & testing.
• MICROBIAL CONTROL METHOD.

Answer 2

JOHN TYNDALL.

Question 3

• clarified the reason that heat would sometimes fail to completely eliminate all microorganisms.
• STERILE

completely free of all life forms (including spores) and virus particles

Answer 3

Ferdinand Cohn.

STERILE.

Question 4

Ferdinand Cohn produced the ff.:
1. HISTOLOGIC STAIN…
2. BASAL MEDIUM…

Answer 4

1. 1849
2. 1872

Question 5

what are the vegetable dyes in the histologic stain of 1849?

Answer 5

1. CARMINE
2. HEMATOXYLIN