Biology: The Unity and Diversity of Life (MindTap Course List)
15th Edition
ISBN: 9781337408332
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 34, Problem 12SQ
Summary Introduction
Introduction: Thyroid hormone is a hormone produced by the thyroid glands. Thyroid hormones are important for maintaining the
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Estradiol is found in high levels in the pregnant rat. This estradiol is prevented from affecting the development of the fetus because:
a. it is chemically converted to testosterone, which does not affect the fetus
b. it is bound by alpha-fetoprotein
c. the blood-brain barrier keeps estrogens like estradiol out of the brain
d. the fetus does not possess the estrogen receptors needed to respond to the estradiol
The hormone controlling metamorphosis in tadpoles is
Group of answer choices
A. thyroxin
B. testosterone
C. juvenile hormone
D. adrenaline
E. ZPA
The hormones that drive frog metamorphosis are _____ while those involved in insect metamorphosis are_____.
a. T3 and T4; juvenile hormone and ecdysone
b. TR alpha and TR beta; adrenaline and ecdysone
c. Juvenile hormone and ecdysone; T3 and T4
d. cortisol and corticosterone; juvenile hormone and ecdysone
Chapter 34 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 34 - Prob. 1DAACh. 34 - Effect of BPA on Insulin Secretion Bisphenol A...Ch. 34 - Effect of BPA on Insulin Secretion Bisphenol A...Ch. 34 - Effect of BPA on Insulin Secretion Bisphenol A...Ch. 34 - Prob. 1SQCh. 34 - A ________ is synthesized from cholesterol and can...Ch. 34 - Match each pituitary hormone with its target. ____...Ch. 34 - Releasing hormones secreted by the hypothalamus...Ch. 34 - Prob. 5SQCh. 34 - Low blood calcium triggers secretion by ________....
Ch. 34 - _______ lowers blood sugar levels; ________ raises...Ch. 34 - Prob. 8SQCh. 34 - The ________ has both endocrine and exocrine...Ch. 34 - Prob. 10SQCh. 34 - Secretion of _______ suppresses immune responses....Ch. 34 - Prob. 12SQCh. 34 - Which of the following is not a steroid hormone?...Ch. 34 - True or false? All hormones secreted by arthropods...Ch. 34 - Match the term listed at left with the most...Ch. 34 - Women who have been blind since birth almost never...Ch. 34 - A diabetic who injects too much insulin can lose...Ch. 34 - Endocrine disruptors can interfere with biological...Ch. 34 - An arctic hares coat color changes from white to...
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- What is the function of the hormone erythropoietin? a. stimulates production of red blood cells b. stimulates muscle growth c. causes the fight-or-flight response d. causes testosterone productionarrow_forwardThe zona pellucida is important in mammals because it... a. induces polyspermy. b. induces compaction. c. inhibits implantation of the embryo until the embryo reaches the uterus. d. inhibits the formation of twins.arrow_forwardIf juvenile hormone production continued throughout an insect’s life, what would be the result? a. All of the events described here. b. The pupa stage would not occur c. Caspases would not be activated d. Inhibition of Imaginal disc cell activationarrow_forward
- A tropic hormone is one whose function is to Answers: A.stimulate growth and development. B. stimulate endocrine tissue to secrete hormones. c. stimulate the central nervous system. D. trigger cellular development.arrow_forwardHormones are often used to control the development and metabolism of agriculturally important organisms. These hormones often end up in the external environment (water or soil). Based on your knowledge of hormonal action which of the following is a likely developmental effect of hormones in the environment on organisms in that environment? Group of answer choices A. Failure to form body axes B. Shortening of limbs C. Changes in the time to reach sexual maturity D. Changes one species into another E. Elongation of limbsarrow_forwardUse the graphs to answer the question. Which answer describes a logical reason why LH and FSH were chosen for this study? A. These hormones regulate gametogenesis and sex hormone production, so they play a pivotal role in puberty. B. These hormones are only present in individuals undergoing puberty, so they provide a good indication of puberty. C. These hormones directly cause puberty related changes. D. These hormones are the only ones that fluctuate with puberty while other hormones are unchanged. Use the graph to answer the question. The graph indicates increases in both FSH and LH for males and females. However, male and female signs of puberty differ. Which of the following explains why? A. Hormone levels increase for both of them, but LH levels increase more for males and less for females. B. FSH and LH trigger higher testosterone production in males and higher estrogen production in females. C. FSH and LH promote a positive feedback…arrow_forward
- In females luteinizing hormone acts to _____. A initiate the shedding of the uterine wall to start mentruation B stimulate the corpus lutuem in the ovary to make estrogen and progesterone C stimulate the hypothalamus to make gonadotropin releasing hormone D stimulate milk production during lactation E ALL of these are functions of luteinizing hormonearrow_forwardChimpanzee males have large testes for their body size. One widely accepted theory proposed to explain this feature is that it is … A. a form of male dominance display. B. a response to the large estrus swelling in females. C. necessary because chimpanzee females have low fertility. D. a consequence of sperm competition. E. attractive to female chimpanzees.arrow_forwardGastrulation in a mammal would be most similar to gastrulation in a. a gecko. b. a tuna. c. an eagle. d. no other species; mammalian gastrulation is uniquearrow_forward
- High levels of juvenile hormone are present during the larval stages of insects. Concentration of juvenile hormone drops before pupation and emergence of adults. What would be the likely outcome of in mutant insect in which the level of juvenile hormone drops three days earlier than normally happens in wild-type insects Group of answer choices A. insects with body parts in the wrong places B. larvae that become adults at an early age C. insects with X-ray vision D. giant larvae that fail to become adults E. larvae that skip the pupal stage and become adultsarrow_forwardThe point mutation in the Bone Morphogenetic Protein receptor 1B (BMPR-1B) appears to have no effect in males but in females results in: a) An increased lung capacity b) Very undeveloped reproductive tracts c) Infertility d) Increased ovulation rate e) Greater milk productionarrow_forwardThe ribs form from the ________. a. notochord b. neural plate c. neural tube d. somitesarrow_forward
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