Micro Chapters 3 & 10 Quiz
Quizes to study for final
Terms in this set (25)
What is the most commonly used type of microscope?
The ________ stain is most widely used for staining bacteria.
Organisms such as Mycobacterium species that lack a cell wall and do not readily take up stains must be stained using this technique.
The cytoplasmic membrane is selectively permeable. A few compounds, like water, gases, and small hydrophobic molecules can pass through cytoplasmic membranes by ____________.
Most prokaryotes are shaped as cocci or ________.
The Gram-positive cell wall consists of a relatively _______ layer of peptidoglycan.
The Gram-negative cell wall consists of a relatively _______ layer of peptidoglycan.
The Gram-_______ cell wall retains the crystal violet-iodine dye complex within the cell, even after acetone-alcohol treatment and stains purple.
Peptidoglycan provides ______ to the cell wall.
Some antibiotics, like Penicillin, prevent _________ synthesis.
This enzyme, found in tears, destroys the structural integrity of peptidoglycan.
The __________ us a long protein structure commonly responsible for bacterial motility.
Capsules and _________ enable bacteria to adhere to surfaces.
The 70S bacterial ribosome is composed of a 50S and a ____S subunit.
The ________ of prokaryotes contains all the genetic information requested by the cell.
These non-chromosomal genetic stuctures encode genetic information that may be helpful to prokaryotic cells.
Many types of pili (fimbriae) enable attachment of cells to surfaces. Sex pili are involved in a form of _______ transfer.
The cytoplasmic membrane in bacteria is a phospholipid ____________.
In a bacterial cell, and electrochemical gradient is generated at the ____________.
3 forms of technology that are used to characterize and identify microorganisms.
2. Biochemical tests
3. Nucleic acid analysis
The size, shape, and staining characteristics of a microorganism yield important clues to its ________.
Using serology, proteins and _________ that make up a prokaryote's surface are sometimes characteristic enough to be identifying markers.
A group of strains that differs serologically from other strains is called a __________.
Antibiograms use ________ susceptibility patterns to distinguish strains.
To determine genetic similarity between 2 organisms, researchers can use __________ hybridization, by measuring how completely single strands of their DNA will anneal to one another.