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.
Correct Answer
verified
Multiple Choice
A) oocyte.
B) stroma.
C) corpus luteum.
D) primary follicle.
E) Graffian follicle.
Correct Answer
verified
Multiple Choice
A) Hepatitis A and B
B) HIV and gonorrhea
C) Hepatitis A and HIV
D) Syphilis and vaginal infections
E) Hepatitis B and chlamydia
Correct Answer
verified
Multiple Choice
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
Correct Answer
verified
Multiple Choice
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.
Correct Answer
verified
Multiple Choice
A) AIDS.
B) chlamydia.
C) gonorrhea.
D) syphilis.
Correct Answer
verified
Multiple Choice
A) Intracytoplasmic sperm injection
B) In vitro fertilization
C) Gamete intrafallopian transfer
D) Artificial insemination by donor
E) Using a surrogate mother
Correct Answer
verified
Multiple Choice
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.
Correct Answer
verified
Multiple Choice
A) testes.
B) epididymis.
C) penis.
D) fimbriae.
E) prostate.
Correct Answer
verified
Multiple Choice
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
Correct Answer
verified
Multiple Choice
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.
Correct Answer
verified
Multiple Choice
A) oviparous
B) ovoviviparous
C) vivaparous
D) Both ovoviviparous and vivaparous.
E) Both vivaparous and oviparous.
Correct Answer
verified
Multiple Choice
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.
Correct Answer
verified
Multiple Choice
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.
Correct Answer
verified
Multiple Choice
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
Correct Answer
verified
Multiple Choice
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.
Correct Answer
verified
Multiple Choice
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.
Correct Answer
verified
Multiple Choice
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.
Correct Answer
verified
Multiple Choice
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.
Correct Answer
verified
Multiple Choice
A) uterus.
B) vagina.
C) abdominal cavity.
D) ovarian follicle.
E) oviducts.
Correct Answer
verified
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