Microbiology Quiz #1

Ability of a lens to distinguish between 2 points

Type of microscope which converts differences in refractive index/cell density into detected variations in light intensity

What is used as a counterstain in gram staining?

What is used as a mordant in gram staining?

Type of microscopy which uses subatomic particles instead of light

Rock-like structures in shallow water formed by microbes

Rapid freezing technique providing a way to preserve native state of structures examined in vacuum

Type of microscope which creates sharp, composite 3D image of specimens by using laser beam, aperture to eliminate stray light, and computer interface

What is used as a decolourizer in gram staining?

Microbe which inhabits hostile environments

Dye which carries a positive charge

Which type of bacteria caused the great oxygenation event?

Fixation used with larger, more delicate organisms which protects fine cellular substructure and morphology

A ____ lens can be used to focus light at a specific point

Species of microbe which relies on metabolic activity of other organisms to grow

What is used as a primary stain in gram staining?

Fixation which is routinely used with bacteria and archaea, preserves overall morphology but not internal structures

Type of microscope which uses excitation with light of a specific wavelength to cause a fluorescent protein to emit longer wavelength light.

RNA which forms peptide bonds and performs cellular work and respiration

Measure of how greatly a substance slows velocity of light

Which staining method is useful for staining bacteria of the genus Mycobacterium due to the high lipid content of their cell walls?

Specific set of growth requirements for a microbe

Dye which carries a negative charge