The development of a hard chancre (an ulcerated sore with hard edges) is indication of what type of STD?
A. yeast infection
B. papillomavirus
C. hepatitis
D. syphilis
E. gonorrhea
Answer: D
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Viral gastroenteritis in infants and children is most commonly caused by
A. herpes. B. hepatitis B. C. Norovirus. D. rotavirus.
The immunodeficiency virus that causes acquired immunodeficiency syndrome is a(n) enveloped virus
____________________ Indicate whether the statement is true or false.
Modern humans possess the same craving for ________ and ________ as our ancestors, despite the obesity these cravings can cause today
A) fat … sugar B) sugar … salt C) protein … vitamin C D) iron; iodine
Cephalization refers to ____.
A. a type of symmetry B. neurons concentrated at the posterior end of an animal C. a net of neural cells D. neurons dispersed throughout the body E. neurons concentrated at the anterior end of an animal