1. What is the purpose of a "Thermal Homeostasis of Gold Fish" lab? 2. Are fish warm-blooded or cold-blooded animals? 3. How do external temperatures affect cold-blooded animals?
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1. What is the purpose of a "Thermal Homeostasis of Gold Fish" lab?
2. Are fish warm-blooded or cold-blooded animals?
3. How do external temperatures affect cold-blooded animals?
4. How do external temperatures affect warm-blooded animals?
5. What do you think will happen if you increase/decrease the temperature of a goldfish’s water?
6. What is the hypothesis on the effects of external effects on temperature homeostasis of a goldfish?
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- 1. What is the relationship between respiration and temperature in fish? 2. What do you think is the relationship between fish behavior and temperature? 3. Does the data in the graph, support internal temperature regulation or external temperature regulation by the goldfish? 4. Does other factors (besides temperature) affect the rate of a fish? 5. What do you think happens to the activity of fish in cold climates during the winter months? 6. Why do you think cold-blooded animals, like the goldfish, change their breathing rate when the surrounding temperature changes?7. Is Thermal Homeostasis of a Gold Fish similar to thermal homeostasis in human? If not, what is the difference? 8. How do you think this might explain the results of a "Thermal Homeostasis Gold Fish" experiment?1) It is _____for aquatic vertebrates to maintain a body temperature different from their surroundings because ______. A) easier; water is a much better insulator than air due to its greater density B) easier; it is possible for fish to absorb heat from the surrounding water by countercurrent exchange even when the water is colder than the fish C) harder; water is a better conductor of heat than air D) harder; terestrial vertebrates can use countercurrent exchange to absorb heat from air that is cooler than their bodies 2) Compared to terrestrial environments, marine environments have_____." A) greater differences in temperature between hot and cold seasons B) smaller differences in temperature between hot and cold seasons C) the same amount of seasonal variability in temperatureWhat is the most likely homeostatic response to an increase in environmental temperature? A. Blood vesse! Constriction 5. B. Producing sweat C. Shivering and muscle contraction D. Goose bump formation 6. What could happen due to a failure in homeostasis? A. The accumulation of waste products B. The loss of excess water from the body C. Maintaining excess levels of sugar in the body D. All of the above are potential outcomes of failure of homeostasis. 7. Which of the following is true when the body is under homeostasis? A. The body cannot generate its own heat in very cold conditions B. The body is under dynamic equilibrium C. The body is able to self-sustain without anything from the environment D. None of the o' ve *46
- 2. Provide an explanation for the observed behavioral responses of fish to temperature changes. In general, what are the physiological effects of temperature changes on living organisms?Is Thermal Homeostasis of a Gold Fish similar to thermal homeostasis in human? If not, what is the difference?Endothermic animals can maintain consistent temperature conditions by generating, main- taining, and regulating their body heat. Under cold conditions, more body heat becomes lost to the environment. Endothermic ani- mals rely on different mechanisms that allow them to maintain their body heat. Which of the following mechanisms that occur in endothermic animals does not describe a mechanism by which they maintain their body heat under these types of conditions? A B с D Some endothermic animals hibernate during extreme environmental conditions, which decreases the rate of metabolic reaction and decreases heat loss. The tissues of the blood vessels of many endothermic animals can dilate and move closer to the skin, allowing for heat to move more readily into the environment. Shivering, which can occur involuntarily in most endothermic animals, produces rapid muscle contractions, which increase the rate of cellular respiration and thereby increase heat production. Layers of densely packed…
- Gas bladders make up an average of 5 percent of body volume in marine fish and 7 percent of body volume (on average) in freshwater fish. What is the reason for this difference? freshwater fish have a larger average body size than salt water fish it is more difficult to produce lift swimming in freshwater than swimming in saltwater freshwater fish need to have a lower overall body density in order to remain neutrally boyant freshwater fish need to have a higher overall body density in order to remain neutrally boyantF1 1 2. Which homologous organs are correctly matched to each other? Bird's wing and bat's wing O Carrot and potato Fish's tail fins and whale's tail fins A pitcher plant's flytrap and a poinsettia's bracts 3. Which of the following equations accurately describe what is happening in a fresh batch of beer? C6H12O62 C₂H6OH + 2 CO2 C6H12O62 C₂H5OH + 2 CO C6H12O62 C₂H5OH +2 CO₂ C12H22O11-2 C2H5OH + 2 CO2 4. Which stage of cell division contains the most amount of DNA? Telophase O Prophase F2 Cytokinesis 2 None of the above. 5. One molecular technique allows one to determine the identity of all the up-regulated and down-regulated RN F3 # M 3 F4 69 $ 4 F5 QWE WE R 28 % 5 F6 F7 ^ 6 Y TY F8 & 7 ♫+ F9 * 00 El 8 F10 U U I 2a ( 9 F11 ) 0 0Consider an experiment in which subjects are given a pill to test its effectiveness in reducing the duration of a cold. Which of the following is the best way to treat the control group? (a) Give the control group two pills instead of one. (b) Do nothing with the control group. (c) Give the control group a pill that looks like the test pill but does nothing. (d) Let the control group choose whether or not to take any pills. (e) Expose the control group to the cold virus.
- 19. The diagram shows the internal feedback mechanism that maintains blood-calcium (Ca2+) homeostasis. If a person has a blood-calcium (Ca2+) level of 8mb/100ml of blood, which of the following mechanisms does the body use to maintain blood-calcium homeostasis? 47 The diagram shows the internal feedback mechanism that maintains blood-calcium (Ca homeostasis. Increases Ca reabsorption in Intestines Active vitamin D Stimulates Ca reabsorption in kidneys Releases PTH parathyrold hormone Stimulates Ca release from bones Parathyrod 9land (behind thyoid) Blood Cat level rises Homeostasis: Blood Cat level (about 10 ma/100 mL) Stimulus: Falling blood Cat level Ir a person has a blood-calcium (Ca) level of 8 ma/100 ml of blood, which of the following mechanisms does the body use to maintain blood-calcium homeostasis? a. The kidneys take up more Ca2+ and release vitamin D. b. The bones release Ca2+ c. The intestines increase reabsorption of Ca2+ d. All of the aboveThe range of regulated body temperatures in mammals is about 36 to 40°C , while in birds it is slightly higher, 38 to 42°C, close to the limit compatible with life. Why do you imagine birds maintain higher body temperatures thanmammals? Do you think eagles and hummingbirds maintain the same body temperatures? Explain.2. Which of the following variables do our bodies regulate? A. Salt concentration in blood B. Glucose concentration in blood C. Body temperature D. All answers are correct 3. Which of the following is an example of positive feedback to indirectly maintain homeostasis? A. the chemical reactions involved in blood clotting B. your blood vessels dilate and you begin to sweat in response to elevated body temperature C. your biood vessels constrict and you begin to shiver in response to low body temperature D. your coach compliments you on your performance in practice
