_________ discovered the existence of heat-resistant bacterial endospores.

____________ was the method first used to immunize an individual against smallpox (Variola) with material taken from a patient or a recently variolated individual in the hope that a mild, but protective infection would result

When stock cultures are stored under liquid nitrogen, a __________ is added to the medium.

The experiment for which _________ won the Nobel Prize consisted of producing a cell-free extract of yeast cells and showing that this "press juice" could ferment sugar.

Higher resolving power means _______ limit of resolution.

Acid-fast organisms like Mycobacterium contain large amounts of lipid substances within their cell walls called _________.

(separate the answers with a "/")

Cultivation is increasing the population of microorganisms by providing their _________ and _________ requirements.

____________ is used for the isolation of unusual physiological types of microorganisms which are present in small numbers and which grow slowly.

(separate the answers with a "/")

The objective of culture preservation is to retain the viability of the stock culture for a long period of time while maintaining its _______ and _______

of being "true-to-type".

___________ microscopy is based on the principle that cells differ in refractive index (a factor by which light is slowed as it passes through a material) from their surroundings.