Which two components of blood involve the formation of clots?
a. albumin and fibrinogen
b. albumin and leukocytes
c. fibrinogen and erythrocytes
d. fibrinogen and platelets
e. platelets and albumin
D
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Which etiologic agent is associated with an infection resulting in a copious frothy fishy-smelling vaginal discharge?
A. Neisseria gonorrhoeae B. Gardnerella vaginalis C. Chlamydia trachomatis D. Treponema pallidum
Exocrine glands secrete all of the following except
a. enzymes. b. sweat. c. milk. d. saliva. e. hormones.
Which of these is NOT an evolutionary advantage of the first cell membranes?
A) Membranes allow cells to move independently. B) Membranes allow for cells to be compartmentalize. C) Membranes allow substances to be concentrated inside a cell, or pumped outside. D) Membranes allow genotypes and the phenotypes they produce to stay linked. E) All of the above are advantages of cell membranes.
All of the following are correct about biofilms, except
A. they are harmless aggregations of microbes. B. they play an important role in recycling elements in the Earth. C. they are cooperative associations among several microbial groups. D. they can colonize medical devices. E. an example could be the scum that builds up in toilet bowls.