TEKS Biology High School - B.11.A: Homeostasis
Quiz by TEKS Biology High School
High School - Biology
Science (2010)
Texas Essential Knowledge and Skills (TEKS)
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- Q 1/8Score 0The diagram demonstrates a feedback process involving antidiuretic hormone (ADH). ADH increases the permeability of parts of the nephrons of the kidney, resulting in less water in the urine. This feedback loop is likely to be activated when —29the body experiences dehydrationbody temperature dropsblood glucose levels are stablethe urinary tract is infected
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- Q1The diagram demonstrates a feedback process involving antidiuretic hormone (ADH). ADH increases the permeability of parts of the nephrons of the kidney, resulting in less water in the urine. This feedback loop is likely to be activated when —the body experiences dehydrationbody temperature dropsblood glucose levels are stablethe urinary tract is infected30sB.11.A: Homeostasis
- Q2The graph models core body temperature during a rapid change in environmental conditions. Which statement explains the pattern in the graph?Vasodilation and vasoconstriction are dependent on the time of dayVasodilation and vasoconstriction trigger an immediate increase in body temperatureBody temperature is controlled by an internal feedback mechanismBody temperature varies in a predictable pattern during the day30sB.11.A: Homeostasis
- Q3When the level of carbon dioxide in the blood is too high, the excess carbon dioxide reacts with water and produces carbonic acid. The carbonic acid causes the blood pH to become more acidic. When the blood pH becomes too acidic, chemoreceptors in the brain instruct the body to react and maintain homeostasis in blood pH. Which of these responses by the body would eliminate the excess carbon dioxide and help maintain homeostasis in blood pH?Increasing the body temperature by shiveringBreathing more deeply and frequentlyDecreasing the heart rateIncreasing glucose levels in the blood30sB.11.A: Homeostasis
- Q4The diagram shows the internal feedback mechanism that maintains blood-calcium (Ca2+) homeostasis. If a person has a blood-calcium (Ca2+) level of 8 mg/100 mL of blood, which of the following mechanisms does the body use to maintain blood-calcium homeostasis?The intestines increase reabsorption of Ca2+The kidneys take up more Ca2+ and release vitamin DThe bones release Ca2+All of the above30sB.11.A: Homeostasis
- Q5The osmoregulation process is shown below. This process is an example of which of the following?Disruption of homeostasis by exerciseControl of urine production by the parasympathetic nervous systemMaintenance of homeostasis by a feedback mechanismThe role of the endocrine system in increasing the oxygen content of red blood cells30sB.11.A: Homeostasis
- Q6A dog’s pituitary gland produces the hormone ACTH, which stimulates the adrenal glands to secrete cortisol. Cortisol helps regulate body weight, mineral balance, the structure of connective tissue, the production of white blood cells, and skin health. When cortisol levels are low, the pituitary gland secretes ACTH. When cortisol levels are high, the pituitary gland stops secreting ACTH. Based on this information, which of the following would most likely be the cause of elevated levels of cortisol in a dog?An excess of ACTHAn immune response to the excess level of cortisolAn inactive pituitary glandUndersized adrenal glands30sB.11.A: Homeostasis
- Q7Changes in water pressure within guard cells cause the cells to open or close the stoma. This response helps the plant maintain homeostasis by —allowing oxygen needed for photosynthesis to enter the plantstabilizing the plant’s temperature through the evaporation of waterregulating the amount of water the plant loses during transpirationenabling the plant to release more carbon dioxide at night for photosynthesis30sB.11.A: Homeostasis
- Q8An individual who participates in a long-distance run on a hot day will produce large quantities of sweat. As a result of the excessive sweating, the amount of urine produced by the kidneys will change. How will the kidneys respond to help the individual's body maintain homeostasis?The kidneys will decrease urine production to allow the body to conserve water.The kidneys will increase urine production so the body can absorb more nutrients.The kidneys will decrease urine production so the body can maintain blood pH.The kidneys will increase urine production to eliminate excess salt in the body.60sB.11.A: Homeostasis
