Which of the following diseases may manifest themselves with painful genital ulcers?
A. chancroid
B. rubeola
C. herpes
D. leptospirosis
E.
chancroid AND herpes
E.
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In an allograft, the tissue donor is
A) the recipient. B) a non-relative. C) a dizygotic twin. D) a monozygotic twin.
There is an article in your local newspaper about an upcoming Biodiversity Day event at your university. Because, after studying biology, you understand why it's important to conserve biodiversity, you plan to attend
Your younger brother tells you he doesn't understand how the loss of a few species or habitats in town can have any impact on anyone's life. What would you tell your brother? A) A decrease in biodiversity could result in a loss of species that could provide new medicines. B) Directly or indirectly, every species on Earth is necessary for human existence. C) Humans are not part of the web of life, but we must respect it. D) The loss of even one species will cause the collapse of important systems that humans rely on.
Which of the following is/are likely to limit the maximum size of a cell?
a. the time it takes a molecule to diffuse across a cell b. the cell's surface-to-volume ratio c. the shape of the cell d. all choices are correct e. none of the choices are correct
When a muscle contracts, the opposing muscle with which it is paired will ____
a. pull b. push c. contract d. relax e. shorten