Over a period of several decades, an adulthuman consumes tons of nutrients and more than 20,000 L of water without significant weight gain. How is this possible? Is it anexample of chemical equilibrium?
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Over a period of several decades, an adult
human consumes tons of nutrients and more than 20,000 L of water without significant weight gain. How is this possible? Is it an
example of
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- Why is egg buoyancy an indicator of egg freshness? Explain in terms of the chemical/biochemical reactions that occur during storage.Some animals fall between endothermic and ectothermic. a) What is this thermoregulation category called? "_____thermy." b) Name one extinct animal with this kind of metabolism: c) Name one extant (living) animal which this kind of metabolismWhy is ammonia not used as a nitrogenous waste compound in terrestrial animals? a)Ammonia is highly toxic, and to minimize that toxicity it must be excreted in large volumes of water. b)Urea and uric acid both have more nitrogen atoms than ammonia, making them more efficient at c)Ammonia is used by reptiles and birds, because it is less toxic to developing embryos than urea. d)Ammonia has more free energy than urea, so ammonia waste is converted to urea to capture some of that free energy.
- Endothermic homeotherms, like mammals, maintain a high internal body temperature, whereas ectothermic poikilotherms, like some reptiles, have internal body temperatures that fluctuate depending on the ambient temperature of their environment. Based on their metabolism, why might mammals have determinate growth whereas some reptiles have indeterminate growth?You are studying a large tropical reptile that has a high and relatively stable body temperature. How do you determine whether this animal is an endotherm or an ectotherm? (A) You know from its high and stable body temperature that it must be an endotherm. (B) You subject this reptile to various temperatures in the lab and find that its body temperature and metabolic rate change with the ambient temperature. You conclude that it is an ectotherm. (C) You note that its environment has a high and stable temperature. Because its body temperature matches the environmental temperature, you conclude that it is an ectotherm. (D) You measure the metabolic rate of the reptile, and because it is higher than that of a related species that lives in temperate forests, you conclude that this reptile is an endotherm and its relative is an ectotherm.An average adult cheetah has a mass of 44,010 grams and a metabolic rate of 61.77 joules per second. Use these data to place the cheetah on the graph. Based on these data, would you characterize the cheetah as an endotherm or ectotherm? How do you know?
- Why is it essential for organisms to maintain a relatively constant body temperature? Describe adaptations that help the organisms cope with changes in environmental temperature.On a cool day, a crab (a poikilothermic animal) is sleeping on a rock and not consuming any food. Compare what happens to its mass over the next two hours on this cold day verses on a warm day? Group of answer choices Its mass will decrease faster on the colder day than on the warmer day because the crab must increase its respiration rate to warm its body. Its mass will decrease slower on the colder day than on the warmer day because cellular respiration in the crab’s cells is occurring faster on the cold day. Its mass will decrease slower on the cold day than the warm day because the crab will conserve its fat stores to survive the cold temperature. Its mass will decrease the same amount on the colder as on the warmer day because the crab is not consuming food. None of the aboveConsider the following energy demands: basal metabolism, reproduction, thermoregulation, activity, and growth; How should the energy spent toward these demands differ between an endotherm and an ectotherm of the same size?
- Individuals who develop scurvy suffer from sore and bleeding gums and loss of teeth. Which of the following describes the mechanism by which the vitamin C they are lacking acts to prevent this disease? Question 79 options: a) As a matrix for the deposition of minerals such as calcium and phosphorus b) As a coenzyme involved in collagen biosynthesis c) As an enzyme involved in ligament formation d) As an antioxidant that prevents tissue damage from free radicalsQuestion 16 How did the Siberian Scutosaurus break down the food in the stomach? A) They ran around to force the food to break into smaller pieces. B) They ate small rocks to help grind the food and used digestive juices. They only ate partially digested food from other animals. D) They couldn't - they were permanently nutrient-deficient. Last saved 1:07:04 P Ter e Type here to search 0員 | 11 DII PrtScn F8 Home F9 F7 Esc F4 F5 F6 F1 F2 F3 ! C@ 23 & 6 8.Why are "fixed formula diets" for animals more beneficial than "variable formula diets"?