The STD characterized by three distinctly different symptomatic stages is the result of infection with

A) Chlamydia trachomatis.
B) Leptospira interrogans.
C) Treponema carateum.
D) Treponema pallidum pallidum.
E) Treponema pallidum pertenue.


D

Biology & Microbiology

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After growth in tissue culture, the infected cells lyse and the virus may be harvested from

A. the lysate, the liquid supernatant after centrifugation. B. the remainder. C. the quantal layer. D. the monolayer.

Biology & Microbiology

The last two remaining females in this population disperse to join a different population that is

50 km away. Breeding with males in this new population would introduce new genes and is an example of __________.

a. alleles b. gene flow c. meiosis d. adaptive radiation

Biology & Microbiology

The most direct hominid ancestor to Homo sapiens is called ________

Fill in the blank(s) with correct word

Biology & Microbiology

A person whose ancestors were cattle herders is more likely to express the lactase gene as an adult.

Answer the following statement true (T) or false (F)

Biology & Microbiology