Rectal swab is:
a. acceptable.
b. not acceptable.
B
Because indigenous anaerobes are often present in large numbers as normal flora on mucosal surfaces, even minimal contamination of a specimen can give misleading results. Specimens that are likely to be contaminated are unacceptable for anaerobic culture. A rectal swab would be highly contaminated with normal bowel flora.
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Which of the following choices places the layers of human skin in the correct order from shallowest to deepest?
a. dermis, epidermis, hypodermis b. hypodermis, dermis, epidermis c. hypodermis, epidermis, dermis d. epidermis, dermis, hypodermis
The contractile ring that works with animal cells could
not work with plant cells because __________. Fill in the blank(s) with the appropriate word(s).
An example of an anabolic reaction is _________.
a. protein hydrolysis b. conversion of starch to glucose c. enzymes converting sucrose d. photosynthesis e. respiration
The cell membrane is composed of a bilayer of ________. These molecules have regions that are polar and nonpolar and are therefore ________
Fill in the blank with correct word.