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PRACTICE TEST4 - PRACTICE TEST 2 Thyroid stimulating...

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PRACTICE TEST 2 Thyroid stimulating hormone (TSH) causes the release of thyroid hormone (TH) from thyroid gland cells. Starting with contact between a molecule of TSH and a thyroid gland cell, describe the steps that happen inside the cell that result in TH being released from the cell. If you are not sure of a particular mechanism you may describe one you are familiar with that could work to help produce the hormone product. 2 The corpus luteum is retained in an active form due to the presence of what hormone? 1. Luteinizing hormone (LH). 2. Follicle stimulating hormone (FSH). 3. Estrogen. 4. Progesterone. 5. Human chorionic gonadotrophic hormone (HCG). 3 The process of signal transduction usually begins 1. when the hormone is released from the gland into the blood. 2. after the target cell divides. 3. when the signal molecule changes the receptor in some way. 4. when ATP is used to power a chemical reaction. 4. The response of a particular cell to a specific chemical signal depends on its particular collection of 1. proteins needed to carry out the response. 2. receptor proteins. 3. relay proteins. 4. 1 and 2. 5. all of the above. 5 Fertilization of human eggs takes place most often in the 1. vagina. 2. ovary. 3. uterus. 4. oviduct (fallopian tube). 5. vas deferens. 6 Organisms categorized as osmoconformers are most likely 1. terrestrial. 2. marine. 3. amphibian. 4. found in freshwater streams or lakes. 8 Receptor molecules for chemical signals would NOT likely be found 1. in the nucleus of target cells.
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2. in the interstitial fluid surrounding target cells. 3. in the cytoplasm of target cells. 4. in the cell membrane of target cells. 9. Which of the following endocrine structures is not controlled by a tropic hormone from the anterior pituitary? 1. Pancreatic islet of Langerhans. 2. Adrenal cortex. 3. Ovaries. 4. Testes. 10. If the release of LH (luteinizing hormone) were inhibited in a human female, which of the following events would not occur? 1. Release of FSH (follicle stimulating hormone) from the pituitary. 2. Maturation of a primary follicle and oocyte. 3. Ovulation of a second oocyte. 4. Release of GnRH (gonadotrophin releasing hormone).
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