Please answer all questions

1		An organism that causes disease is a(an):
			A)	allergen.
			B)	pathogen.
			C)	viral agent.
			D)	parasite.
2		The release of histamines causes:
			A)	infection.
			B)	illness.
			C)	contamination.
			D)	inflammation.
3		A reaction by the body's immune system to a harmless substance such as dust is:
			A)	acquired immunity.
			B)	an antigen.
			C)	an allergy.
			D)	a vector.
4		Antibiotics are most effective against:
			A)	bacteria.
			B)	parasites.
			C)	viruses.
			D)	colds.
5		The most common forms of contagious disease are caused by:
			A)	bacteria.
			B)	protozoa.
			C)	T cells.
			D)	viruses.
6		In untreated HIV infection, the average amount of time between the initial infection and the onset of symptoms is:
			A)	1 year.
			B)	6 years.
			C)	11 years.
			D)	16 years.
7		Which of the following STDs is often asymptomatic among women?
			A)	chlamydia
			B)	gonorrhea
			C)	hepatitis B
			D)	all of the above
8		Which of the following STDs is curable with currently available treatments?
			A)	herpes
			B)	genital HPV infection
			C)	syphilis
			D)	HIV infection
9		The leading cause of infertility among young women is:
			A)	human papillomavirus infection.
			B)	HIV infection.
			C)	syphilis.
			D)	pelvic inflammatory disease.
10		Unlike HIV, hepatitis B is often transmitted through:
			A)	sexual intercourse.
			B)	nonsexual close contact.
			C)	injection drug use.
			D)	contact during childbirth.