1 SEM ACC W/RAVEN CARDED
12th Edition
ISBN: 9781265486297
Author: Raven
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 51, Problem 3S
How are the functions of FSH and LH similar in male and female mammals? How do they differ?
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10. Researchers have discovered a new compound that is a candidate for birth control. Its proposed
mechanism is to be a progesterone receptor agonist meaning that it binds and activates receptors
that would normally recognize progesterone. Researchers are interested in understanding the efficacy
of the new compound, in other words, how well does its progesterone receptor agonist activity
prevent the possibility of pregnancy. Assume that we are working in a rodent model system (mouse or
rat) and propose a research design to test the efficacy of this compound. This design needs to address
the proposed mechanism that this compound is a progesterone receptor agonist. Include a description
of the variables in the experiment, the treatment groups, the procedure to detect the efficacy of the
proposed mechanism, and an explanation of the results that would be required to confirm the efficacy
of this compound for birth control.
D. Focus
五
1. Can a test determine an individual's biological sex? And can testosterone
produced by an athlete's own body provide an unfair advantage?
2. At the bottom of the section on development is a graph showing
testosterone levels for male and female athletes. Most female athletes have
less than 5 nm/L of testosterone, but a few have as high as 30 nmol/L which
is above the average for male athletes. Which genetic condition(s) can cause
XX individuals to have high testosterone levels?
(3) The AR gene codes for a transcription factor which is only functional
when testosterone is present. Based on what you know about transcription
factors and about sex determination explain
(A) Why do XY individuals with a mutation in the AR gene develop as females
despite having male levels of testosterone?
(B) Would you expect such individuals to be more muscular than an average
female?
(4) Do the case studies for the sprinter and the swimmer. Should they be
eligible to compete? Explain your answer.
4. Why is hCG secretion important during the first trimester?
Chapter 51 Solutions
1 SEM ACC W/RAVEN CARDED
Ch. 51.1 - Prob. 1LOCh. 51.1 - Prob. 2LOCh. 51.1 - Prob. 3LOCh. 51.2 - Prob. 1LOCh. 51.2 - Prob. 2LOCh. 51.3 - Prob. 1LOCh. 51.3 - Prob. 2LOCh. 51.3 - Prob. 3LOCh. 51.4 - Prob. 1LOCh. 51.4 - Explain ovulation and the female reproductive...
Ch. 51.4 - Prob. 3LOCh. 51.5 - Prob. 1LOCh. 51.5 - Describe causes of infertility.Ch. 51 - Prob. 1DACh. 51 - Why might it be adaptive for an individual to be...Ch. 51 - Prob. 2IQCh. 51 - Why do you think the brain is affected when the...Ch. 51 - You have discovered a new organism living in tide...Ch. 51 - Prob. 2UCh. 51 - Prob. 3UCh. 51 - Which of the following structures is the site of...Ch. 51 - FSH and LH are produced by the a. ovaries. b....Ch. 51 - Prob. 6UCh. 51 - Mutations that affect proteins in the acrosome...Ch. 51 - In humans, fertilization occurs in the____, and...Ch. 51 - The testicles of male mammals are suspended in the...Ch. 51 - Prob. 1ACh. 51 - Which of the following is a major difference...Ch. 51 - Prob. 3ACh. 51 - Internal and external fertilization differ in that...Ch. 51 - Prob. 1SCh. 51 - Why do you think that amphibians and many fish...Ch. 51 - How are the functions of FSH and LH similar in...Ch. 51 - Prob. 4SCh. 51 - Why are all parthenogenic parents female?
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- What would happen if the trophoblast did not secrete hCG upon implantation of the blastocyst? Tire cells would not continue to divide. Tire corpus luteum would continue to produce progesterone and estrogen. Menses would flush the blastocyst out of the uterus. Tire uterine mucosa would not envelop the blastocyst.arrow_forwardSperm must first complete ________ to enable the fertilization of an oocyte. capacitation the aerosomal reaction the cortical reaction the fast blockarrow_forwardWhich hypothalamic hormone contributes to the regulation of the male reproductive system? luteinizing hormone gonadotropin-releasing hormone follicle-stimulating hormone androgensarrow_forward
- The function of the placental hormone human placental lactogen (hPL) is to ________. prepare the breasts for lactation nourish the placenta regulate the menstrual cycle all of the abovearrow_forwardHow would mutations that completely ablate the function of the androgen receptor impact the phenotypic development of humans with XY chromosomes? Patients would appear phenotypically female Patients would appear phenotypically male with underdeveloped secondary sex characteristics Patients would appear phenotypically male, but cannot produce sperm Patients would express both male and female secondary sex characteristics.arrow_forwardHow does the decrease in progesterone at the last weeks of pregnancy help to bling on labor? stimulating FSH production decreasing the levels of estrogens dilating the cervix decreasing the inhibition of uterine contractilityarrow_forward
- Match each hormone with its source. ____ FSH and LH a. pituitary gland ____ GnRH b. ovaries ____ estrogens c. hypothalamus ____ testosterone d. testesarrow_forward1. A non-pregnant female's uterus shed its lining (the outer endometrial layer) every 4 weeks and then begins the menstrual cycle anew, the cycle's timing being controlled by female reproductive hormones. A successful pregnancy requires that the menstrual cycle be interrupted and the fetus left undisturbed for 9 months. Cycle interruption is accomplished by the fetal placenta, which secretes several key hormones that manipulates maternal reproductive physiology. Give at least three (3) hormones that control the maternal reproductive physiology, give their specific functions/role.arrow_forwardHow are the functions of FSH and LH similar in male and female mammals? How do they differ?arrow_forward
- 54.arrow_forward2arrow_forward16.In what order do sperm move through the structures of the female reproductive tract? (This is a multiple choice question choose the answer from the choices below) A.vagina; uterus; oviduct; ovary B.vagina; cervix; uterus; oviduct C.endometrium; cervix; uterus; oviduct D.ovary; oviduct; uterus; vaginaarrow_forward
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