- Which of the following is not analogous to a biological polymer?A) a trainB) a pearl strand necklaceC) an iron chainD) a truck
- The molecular formula of a carbohydrate molecule is C24H42O21. The maximum number of glucose and water molecules that will be consumed by complete hydrolysis of the carbohydrate is ________.A) 6 molecules of glucose and 3 molecules of waterB) 4 molecules of glucose and 4 molecules of waterC) 4 molecules of glucose and 3 molecules of waterD) 6 molecules of glucose and 5 molecules of water
- Which of the following best describes a change to the female reproductive system that occurs in menopause?A) the ovaries loose their responsiveness to FSH and LH B) the production of gonadotropin hormones by the anterior pituitary gland declines C) the endometrium is reduced and eventually lostD) no more primary oocytes exist in the ovaries
- Which of the following characteristics is most likely an adaption?A) dark fur on mice that live in areas with light colored soilB) large size in st. bernard dogsC) bright colors in prairie flowersD) large seed size in wind-dispersed plants
- Which statement about reproduction is false?A) fertilization occurs in the oviductB) spermatogenesis and oogenesis require different temperaturesC) an oocyte completes meiosis after sperm penetrates itD) the earliest stages of spermatogenesis occur closest to the lumen of the seminiferous tubules
- Which of the following statements best represents a conclusion that Cuvier made when he considered the fossils found in the vicinity of Paris?A) older rock strata contain species that are quite similar to current species because they evolved in that areaB) young rock strata contains only species that evolved recentlyC) multiple catastrophes caused extinctions and then new species evolvedD) multiple catastrophes caused extinctions and then species from other areas repopulated emptied areas
- Which structure is formed by the follicular cells that remain behind in the ovary following ovulation in humans?A) the ovarian endometrium that is shed at the time of the mensesB) a steroid-hormone synthesizing structure called corpus luteumC) the thickened portion of the uterine wall D) the placenta, which secretes cervical mucus
- Which of the following observations helped Darwin agree with Lyell that Earth was more than a few thousand years old?A) experiencing an earthquake and seeing fossils of ocean organisms high in the AndesB) experiencing a tidal wave and seeing fossils of ocean organisms in the interior lands of the Galapagos islandsC) observing the immigration of new finch species to bare island in the Galapagos Islands and seeing the development of new speciesD) observing the variety of mockingbirds on the different Galapagos Islands as well as understanding that they were most similar to species in South America
- An ectopic pregnancy occurs when a fertilized egg implants somewhere other than in the lining of the uterus (usually it implants in the oviduct). Which of the following best explains why such a pregnancy would not be successful?A) the orientation of the baby would be sidewaysB) human chorionic gonadotropin (hCG) cannot be produced in the oviductC) the structure of the oviduct is unable to support the developing fetusD) the necessary hormones cannot reach the developing fetus in the oviduct
- James Hutton and Charles Lyell provided which of the following ideas that paved the way for Darwin's thinking?A) the surface features of Earth were formed by catastrophic events and the fossil record showed that species have evolvedB) the surface features of Earth were formed by catastrophic events and those events are still occurringC) the surface features of Earth were formed gradually and the fossil record showed that species have evolvedD) the surface features of Earth were formed slowly and gradually and the geological processes are still at work
- Which of the following statements is most consistent with data obtained from the fossil record?A) older strata carry fossils that differ greatly from living organismsB) geologic changes occur quickly on EarthC) unused body parts decrease in sizeD) organisms have an innate drive to increase in complexity
- Which of the following statements is accurate if we view evolution both as a pattern and a process?A) to study evolution as a pattern we draw on information from many other scientific fields, while to study evolution as a pattern we study factors that cause changes in populationsB) to study evolution as a pattern we study factors that cause changes in population, while to study evolution as a process we draw on information from many other scientific fieldsC) to study evolution as a pattern we rely on data from the past, while to study evolution as a process we study data from current day populationsD) to study evolution as a pattern we study data from current day populations, while to study evolution as a process we rely on data from the past
- Which of the following is a true statement?A) all mammals have menstrual cyclesB) the endometrial lining is shed in menstrual cycles but reabsorbed in estrous cyclesC) estrous cycles are more frequent than menstrual cyclesD) ovulation occurs before the endometrium thickens in the estrous cycle
- Which correctly describes the outcome of a vasectomy?A) elimination of spermatogenesisB) elimination of testosterone synthesisC) prevention of ejaculationD) prevention of sperm entering the male urethra
- Peaks of LH and FSH production occur during _____.A) the menstrual flow phase of the uterine cycleB) the beginning of the follicular phase of the uterine cycleC) the period just before ovulationD) the secretory phase of the uterine cycle
- Which of the following are contraceptive methods that are considered permanent and that block gametes from moving to a site where fertilization can occur?A) the male condom and female condomB) the male condom and oral contraceptivesC) vasectomy and tubal ligationD) the diaphragm and subcutaneous progesterone implant
- During human gestation, rudiments of all organs develop ______.A) in the first trimesterB) in the second trimesterC) in the third trimesterD) during the blastocyst stage
- For your internship at the local zoo, you have ben assigned to help with the new orangutan-breeding program. Little is known about orangutan reproductive hormones, but hormone feedback cycles are often the same in closely related animals. You have been asked to use your knowledge of the interactions of human reproductive hormones to recommend injections to promote ovulation in a female orangutan when a visiting male arrives for a brief breeding visit. Which of the following hormones would you inject a few days before the male visit if you want to induce ovulation when he arrives?A) estradiolB) progesteroneC) luteinizing hormoneD) follicle-stimulating hormone
- Which statement correctly describes the primary function of the corpus luteum?A) to nourish and protect the egg cellB) to maintain progesterone and estradiol synthesis after ovulation has occurredC) to stimulate the development of the mammary glands D) to support pregnancy in the second and third trimesters
- Which of the following characterizes parthenogenesis?A) an individual may change its sex during its lifetimeB) specialized groups of cells grow into new individualsC) an organism is first a male and then a femaleD) an egg develops without being fertilized