Which of the following is NOT involved in the
development of acne?
a. excessive production of sebum
b. Staphylococcus epidermidis
c. dead skin cells
d. hair follicles
e. neutrophils
Answer: b
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The normal microbiota of the genital tract of women is
A. affected by estrogen levels. B. dependent on the activity of Lactobacillus. C. unchanging. D. typically composed of Escherichia coli. E. affected by estrogen levels AND dependent on the activity of Lactobacillus.
The ability to conjugate depends on the presence within the donor cell of a plasmid called the ____
a. X factor b. F factor c. C factor d. sex pilus e. S factor
What was the purpose of Stanley Miller's experiment?
What will be an ideal response?
The central axis around which the shell of a snail coils is called the
a. Aperture b. Columella c. Sinistral d. Dextral e. Torsion