What Is Life? A Guide to Biology with Physiology
4th Edition
ISBN: 9781319065447
Author: Jay Phelan
Publisher: W. H. Freeman
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Chapter 25, Problem 8MC
Summary Introduction
Introduction:
Estrogen is the female reproductive hormone produced by the developing follicles in the ovary.
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Which of the following would most likely reduce levels of active estrogen to potentially modulate cancer risk?
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Increased alcohol consumption
b)
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Decreased levels of sex-hormone-binding globulin
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Increased phytoestrogen intakes
Under which of these conditions are you most likely to observe a depression in plasma prolactin levels?
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a. Breastfeeding
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What condition occurs if a male lacks the receptor that enables androgens to activate genes in a cell’s nucleus? a. Klinefelter’s syndrome b. Congenital adrenal hyperplasia c. Testicular feminization d. Turner’s syndrome
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What Is Life? A Guide to Biology with Physiology
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- Which hormone is primarily responsible for the contractions during labor? a. oxytocin b. estrogen c. -HCG d. progesteronearrow_forwardWhich of the following statements correctly describes the effects of increased testosterone? a. Increased levels of testosterone result in increased sperm production b. Increased levels of testosterone decreases the release of FSH and LH c. Increased levels of testosterone stimulates the release of GnRH d. Increased levels of testosterone stimulates the release of FSH and LH.arrow_forwardAll of the following conditions would benefit from hormone replacement therapy EXCEPT. A. Andropause B. Breast cancer C. Menopause D. Osteoporosisarrow_forward
- Which of the following are functions of luteinizing hormone? A. stimulation of production of estrogen B. thinning of the follicle membrane C. stimulation of follicle development D. formation and maintenance of corpus luteumarrow_forwardIn male fetuses, testosterone is converted into ___ Which is required for genitalia to develop into a penis and scrotum. Complications in the activity of this hormone can disrupt the development of external sex organs in male fetuses, and can produce intersex variations. A) estradiol B) dihydrotestosterone C) Müllerian inhibiting hormone D) luteinizing hormonearrow_forwardWhat is a potential consequence of embryonic exposure to endocrine-disrupting compounds that can bind to estrogen receptors? Select one: a. Increased growth rate and early birth b. Decrease in size of developing testes c. Increased rate of ovulation d. Decreased sperm count e. Choices B and D are correctarrow_forward
- Select the best answer or answers from the choices given: If anterior pituitary secretion is deficient in a growing child, the child will (a) develop acromegaly, (b) become a dwarf but have fairly normal body proportions, (c) mature sexually at an earlier than normal age, (d) be in constant danger of becomingdehydrated.arrow_forwardWhich of the following is correct pairing of concepts? * A. Male sex hormones: androgens B. Pregnancy hormones: progestins C. Female sex hormone: estrogen D. After menopause hormones: estriolarrow_forwardWhat is the purpose of androgen binding protein by Sertoli cells of the testes? a. Potentiates the actions of testosterone at target cells b. Prevents testosterone from diffusing out the testes c. Regulates level of testosterone via negative feedback control at the level of the anterior pituitary d. To stimulate testosterone productionarrow_forward
- If a child develops an anterior pituitary tumour that reduces LH and FSH production,the child will _________.A. not develop gonads.B. experience delayed or disrupted puberty.C. produce excess testosterone or estrogen.D. develop secondary sexual characteristics before puberty.arrow_forwardWhich of the following is likely to happen when you remove the testes of an adult male rat? a) Decrease in follicle stimulating hormone. b) Decrease in the level of gonadotropin releasing hormone. c) Increase in testosterone levels. d) Increase in the level of follicle stimulating hormone.arrow_forwardWhat does folate deficiency in males cause? A. Blindness B. High sperm production C. Low sperm production D. Cardiovascular Diseasearrow_forward
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