Microbiology Quiz #1

Rock-like structures in shallow water formed by microbes

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

Microbe which inhabits hostile environments

Which type of bacteria caused the great oxygenation event?

What is used as a counterstain in gram staining?

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

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

Ability of a lens to distinguish between 2 points

Dye which carries a positive charge

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

RNA which forms peptide bonds and performs cellular work and respiration

Specific set of growth requirements for a microbe

What is used as a decolourizer in gram staining?

What is used as a primary stain in gram staining?

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

Measure of how greatly a substance slows velocity of light

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

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 mordant in gram staining?

Type of microscopy which uses subatomic particles instead of light

Dye which carries a negative charge

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

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