+
Related Flashcards
Related Topics
Cards In This Set
| Front | Back |
|
6. As the magnification of a series of objective lenses increases, the working distance___
|
Decreases
|
|
Resolution generally is _______ with a longer wavelength of light.
|
Worsened
|
|
Which of the following is an intracellular agent that contains protein but does not appear to carry nucleic acids.
|
Prions
|
|
Acid-fast organisms such as Mycobacterium tuberculosis resist decolorization by an acid-alcohol wash because of the high concentration of __________ in their cell walls.
|
Lipids (mycolic acid)
|
|
Basic dyes
|
Have negative charge
|
|
The ribosomal RNA studies that led to the division of procaryotic organisms into the Bacteria and the Archea were begun by
|
Woese
|
|
The crosslinking in the
peptidoglycan of a Gram positive organism consists of ________ between
the D ala of one tetrapeptide to the DAP (or lysine) of a second
tetrapeptide.
|
A covalent amide bonding by a peptide interbridge
|
|
Which amino acid(s) is/are found only in the cell walls of Bacteria?
|
Diaminopimelic acid
|
|
The crosslinking in the
peptidoglycan of a Gram negative organism consists of a ________
between the D ala of one tetrapeptide to the Diaminopimelic Acid of a
second tetrapeptide.
|
A direct link through an amide bond.
|
|
Spirochetes have a twisting and flexing locomotion due to appendages called
|
Periplasmic flagella (axial filaments)
Question 16
|
|
Endospores are
|
A dormant cell type
|
|
A feature unique to some archaeal plasma membranes is that they may:
|
Consist of a lipid monolayer
|
|
Peptidoglycan
|
May be digested by lysozyme.
|
|
Organisms that are indifferent to the presence of oxygen and do not use it are
|
Aerotolerant anaerobes.
|
|
During which phase of growth are bacteria most susceptible to antibiotics?
|
Exponential (log)
|
