Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN: 9781305073951
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Textbook Question
Chapter 34, Problem 1CT
Women who have been blind since birth almost never have breast cancer. A high level of one specific hormone is though to contribute to their low cancer rate. Which hormone is it and why are levels of this hormone unusually high in the blind?
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Chapter 34 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 34 - Prob. 1DAACh. 34 - Sperm Counts Down on the Farm Contamination of...Ch. 34 - Sperm Counts Down on the Farm Contamination of...Ch. 34 - Sperm Counts Down on the Farm Contamination of...Ch. 34 - __________are signaling molecules that travel...Ch. 34 - A __________ is synthesized from amino acids and...Ch. 34 - Match each pituitary hormone with its target....Ch. 34 - Releasing hormones secreted by the hypothalamus...Ch. 34 - In adults, too much __________ can cause...Ch. 34 - Function of the __________ declines after puberty....
Ch. 34 - Low blood calcium triggers secretion by ________....Ch. 34 - _______ lowers blood sugar levels; ________ raises...Ch. 34 - Prob. 9SQCh. 34 - Secretion of _______ suppresses immune responses....Ch. 34 - Exposure to bright light lowers blood _________...Ch. 34 - Prob. 12SQCh. 34 - True or false? Only women make...Ch. 34 - Prob. 14SQCh. 34 - Prob. 15SQCh. 34 - Women who have been blind since birth almost never...Ch. 34 - A diabetic who injects too much insulin can lose...
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- Describe how hormone receptors can play a role in affecting the size of the responses of tissues to hormones.arrow_forwardHypothyroidism is a condition in which the thyroid gland fails to produce adequate amounts crucial hormones. In the early stages, persons suffering from this condition may be asymptomatic. However, chronic hypothyroidism may show signs of paleness. Please explain the physiological reasons for this symptomatology.arrow_forwardWomen who are completely blind tend to undergo puberty at an earlier age than sighted women. They also are less likely to have breast cancer. By one hypothesis, blindness encourages early puberty and discourages breast cancer by its effect on melatonin secretion. Based on this information, would you expect the average melatonin level in blind women to be higher or lower than that of sighted women? Explain your answer.arrow_forward
- Which of the following best explains how hormone antagonists work? Multiple Choice By flooding the cancerous cells with hormones By blocking actions of hormones that the cancer cells need to function By competing with uracil or cytarabine and metabolizing the nutrients required for hormone production By inhibiting folic acid, which is essential for blood cell and hormone productionarrow_forwardWhich of the following observations can be explained by the properties of hormone receptors? a) A certain tissue can react to more than one hormone b) A certain hormone affects only a specific tissue, not all tissues c) Some tissues react very quickly to a certain hormone, other tissues take many hours to react to the same hormonearrow_forwardMany functions in the body are controlled by hormones – chemical signals that are secreted by one organ or tissue, but have effects in multiple areas. Calcium can enter the body from what we eat and drink. It circulates through blood and is used by many organs, so it’s level is carefully regulated. The amount of calcium in the blood is maintained at a relatively constant level by two hormones; for our purposes, we’ll just call them hormone A and hormone B. Hormone A is secreted by the parathyroid gland and it functions to increase blood calcium levels. Hormone B is secreted by parafollicular cells (C cells) in the thyroid gland and it functions to decrease blood calcium levels. Calvin, a teenage boy, begins eating ChocoRite™ Calcium Bites, a very tasty calcium supplement. He likes them so much that he ends up eating a whole package one afternoon. 1.Where does hormone B come from? A)From the calcium regulatory cells B)From the parathyroid gland C)From calcium supplements,…arrow_forward
- Melatonin is a hormone made by the pineal gland, a small gland in the brain. Melatonin helps control your sleep and wake cycles. Evaluate each statement below and select the statement that best describes the pathway. Select one: a. Light on the retina stimulates the hypothalamus to send a signal to the pineal gland to stop producing melatonin, signalling the body to go to sleep. b. Light on the retina stimulates the hypothalamus to send a signal to the pineal gland to increase the production of melatonin, signalling the body to go to sleep. c. Light on the retina stimulates the hypothalamus to send a signal to the pineal gland to stop producing melatonin, signalling the body to wake up. d. Light on the retina stimulates the hypothalamus to send a signal to the pineal gland to increase the production of melatonin, signalling the body to wake up.arrow_forwardIn your opinion, what is the significance of having the right cell receptors for a specific hormone? Provide an example to support your answer.arrow_forwardA physician examines a patient who reports that he has experienced excessive sweating, irritability, and feverish episodes. Assay of hormones in blood reveal that thyroid hormone levels are abnormally high, and TSH levels are low. An RAIU (radioactive iodine uptake scan) reveals a hot spot on the thyroid, indicating a localized region of intense iodine uptake. What do you predict that this patient’s diagnosis will be? How would you attempt to treat such a condition?arrow_forward
- Your friend Bud has the talent to be a star basketball center—if only he weren’t 5 foot 8. Being well- intentioned but ignorant, you start injecting him with growth hormone as he sleeps each night. You. think this is a clever strategy, but after a time you notice that he hasn’t grown an inch. Instead, his jaw and forehead seem to have gotten disproportionately large and his hands and feet are swollen. Explain why the growth hormone didn’t make Bud grow taller and why it had the effect it did. What disease state do these changes mimic?arrow_forwardwhat happens to a water souble hormone after it binds to a receptor on the target cell? select all that apply A. the hormone unbinds the receptor or pops back off B. the hormone is broken down by an enzyme C. the hormone is transported into the cell where it is destroyed by enzymes d. the hormones is transported into the cell where it promotes transcription.arrow_forwardWhat hormone is described? It diffuses easily into target cells and binds to a receptor near the nucleus, subsequently altering both gene expression and cellular metabolism. This hormone has more chemical similarities to a hormone that typically binds to receptors on the plasma membrane than to a hormone that diffuses into the target cells. a.Amine hormoneb. Glucocorticoidc. Steroid Hormoned. Peptide Hormonearrow_forward
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