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The medication known as mifepristone or RU-486


A) kills sperm as they enter the female reproductive tract.
B) blocks the progesterone receptors of cells in the uterine lining and causes the loss of an implanted embryo.
C) prevents an egg from maturing and being released-essentially a stronger regular birth control pill.
D) destroys the embryo which in turn causes a spontaneous miscarriage.
E) prevents development of a uterine lining.

F) A) and E)
G) None of the above

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When an egg erupts from a follicle,the chamber that remains and secretes hormones is the


A) oocyte.
B) stroma.
C) corpus luteum.
D) primary follicle.
E) Graffian follicle.

F) B) and C)
G) A) and E)

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Which of the following STDs are preventable through the use of a vaccine?


A) Hepatitis A and B
B) HIV and gonorrhea
C) Hepatitis A and HIV
D) Syphilis and vaginal infections
E) Hepatitis B and chlamydia

F) C) and E)
G) B) and D)

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Which of these descriptions is associated with the luteal phase of the uterine cycle?


A) low FSH,high estrogen,developing follicle,increase in uterine lining
B) high LH,high estrogen,developing follicle,uterine lining breakdown
C) decrease in LH,increase in progesterone,corpus luteum present,secretory uterine lining
D) decrease in LH,decrease in progesterone,corpus luteum present,secretory uterine lining
E) increase in LH,increase in progesterone,corpus luteum present,endometrium released

F) A) and D)
G) B) and E)

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Which of the following is not one of the stages of HIV infection?


A) A greater than 500 CD4 + T cells per microliter of blood.
B) A CD4 + T cell count between 200 and 499 per microliter of blood.
C) A CD4 + T cell count below 200 per microliter of blood.
D) Opportunistic infections.
E) Flat or raised lesions on the penis or vulva.

F) A) and D)
G) C) and E)

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All of the following STDs are bacterial infections EXCEPT


A) AIDS.
B) chlamydia.
C) gonorrhea.
D) syphilis.

E) All of the above
F) B) and C)

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Which of the following reproductive technologies would produce the greatest complications in defining the individuals who are considered the parents of the child?


A) Intracytoplasmic sperm injection
B) In vitro fertilization
C) Gamete intrafallopian transfer
D) Artificial insemination by donor
E) Using a surrogate mother

F) A) and B)
G) B) and E)

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Inhibin is a hormone that


A) decreases sexual urges.
B) is involved in a positive feedback relationship with the hypothalamus to regulate maturation of eggs in the oviduct.
C) is involved in a negative feedback relationship with the anterior pituitary and hypothalamus to regulate testosterone levels.
D) is involved in a negative feedback relationship with the anterior pituitary and hypothalamus to trigger ovulation in females.
E) prevents or inhibits erection.

F) C) and D)
G) A) and B)

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All of the following structures are part of the male reproductive system EXCEPT


A) testes.
B) epididymis.
C) penis.
D) fimbriae.
E) prostate.

F) A) and E)
G) A) and B)

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Which of the following associations of STD etiologic agent and clinical presentation is NOT correct?


A) Candida - vaginal yeast infection
B) Treponema pallidum - chancre,blindness,insanity
C) Chlamydia - mild burning on urination,mucoid discharge,possible pelvic inflammatory disease
D) Hepatitis viruses - liver infections and inflammation

E) A) and D)
F) A) and C)

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Which of the following associations of reproductive strategies and their descriptions are correct?


A) oviparous - egg is deposited in external environment
B) ovoviviparous - produce eggs but retain them inside the female body until hatching occurs
C) viviparous - the embryo develops inside the body of the female from which it gains nourishment
D) All of the choices are correct.

E) A) and D)
F) None of the above

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Which type of life history produces a larval stage that feeds on a different food source than the adult stage.


A) oviparous
B) ovoviviparous
C) vivaparous
D) Both ovoviviparous and vivaparous.
E) Both vivaparous and oviparous.

F) A) and E)
G) B) and E)

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All of the following statements concerning activities in the female reproductive system are true EXCEPT


A) the follicles in the ovary produce estrogen.
B) a surge of FSH is believed to promote ovulation.
C) the placenta can produce both estrogen and progesterone.
D) LH stimulates the formation of the corpus luteum.
E) the corpus luteum produces progesterone.

F) B) and D)
G) B) and E)

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What is the probable biological and evolutionary function for a species of desert lizards to return to female-only reproduction?


A) This species is probably going extinct.
B) This is not at all unusual since most reptiles are asexual.
C) The desert is uniform,and variation is of little or no advantage and a waste in energy.
D) Such a switch in mating behavior is easily understood as a crossing-over in chromosomes.

E) A) and B)
F) A) and D)

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Identify the correct order of events for a person who has contracted an HIV infection. A.The immune system reduces the virus levels in the blood. B.HIV infected cells proliferate,increasing the number of infected helper T cells. C.Patient experiences mild flu-like symptoms. D.A deficiency in the number of helper T cells causes the patient to develop additional health problems. E.The blood contains a high amount of the virus. F.The virus mutates so it is not recognizable by the immune system.


A) e - c - a - b - f - d
B) d - c - a - b - f - e
C) e - c - b - a - f - d
D) e - a - b - c - f - d
E) d - e - c - a - b - f

F) B) and C)
G) A) and E)

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The egg is propelled down the oviduct by


A) cilia on the layer of nurse cells surrounding the egg.
B) oviduct cilia and tubular muscle contractions.
C) simply drifting on the prevailing current of body fluids.
D) suction from the uterine contractions.

E) B) and C)
F) A) and B)

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Which of the following statements about reproduction is NOT true?


A) Gametes are produced by meiosis and may be specialized as eggs or sperm.
B) Hydras may reproduce asexually by budding new individuals from the parent.
C) Asexual reproduction is most advantageous when the environment is continually changing.
D) A hermaphrodite produces both male and female gametes in different specialized gonads.
E) A starfish can be cut into several pieces,and each piece will regenerate all the other parts of the individual.

F) All of the above
G) C) and D)

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Which of the following statements describes events during oogenesis?


A) The primary oocyte divides producing two haploid cells.
B) The primary oocyte divides producing four haploid cells.
C) The primary spermatocyte divides producing two spermatids.
D) The primary oocyte divides producing four diploid cells.
E) None of these events occur during oogenesis.

F) None of the above
G) B) and E)

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Which of the following is NOT true after a man has had a vasectomy?


A) Bulbourethral glands are not affected by the operation.
B) The vas deferens still transports sperm to the urethra.
C) The interstitial cells can still release hormones.
D) The semen will not contain sperm.
E) The oviduct will not be affected.

F) A) and D)
G) B) and E)

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Fertilization in humans normally occurs in the


A) uterus.
B) vagina.
C) abdominal cavity.
D) ovarian follicle.
E) oviducts.

F) B) and E)
G) C) and D)

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