Endothermics have constant core temperatures because of... a. temperature fluctuations in the environment b. heat-producing cellular reactions c. adaptations such as skin and fur d. all the reasons cited above e. none of the reasons cited above

Endothermics have constant core temperatures because of... a. temperature fluctuations in the environment b. heat-producing cellular reactions c. adaptations such as skin and fur d. all the reasons cited above e. none of the reasons cited above

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter46: Gas Exchange: The Respiratory System

Section: Chapter Questions

Problem 3TYK

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Which of the following statements is (are) accurate about aerobic and anaerobic respiration?a. Aerobic respiration is best for sprints.b. Anaerobic respiration is best for long distances because it does not need large amounts of oxygen.c. Aerobic respiration is faster.d. Aerobic respiration produces more energy per glucose molecule.e. Both aerobic respiration and anaerobic respiration start with glycolysis.
One of the disadvantage of negative feedback loop is lag caused because it can only be exerted after controlled variable has been disturbed. In order to minimize lag between a change in a controlled variable and the action of the effector, it is advantageous for the body to anticipate any likely change. Which one of the following physiological mechanism achieves this? Select one: O a. Feedbackward control O b. Feedforward control O C. Positive feedback control O d. All of the above O e. None of the above Next page Es I Week6 EXTRA LECTURE Part 3 Coursework 3 ► Jump to. 19.04.2021 10:42 b.y G ENG
Define the following terms: a. aerobic metabolism b. aerobic respiration c. ΔG°′ d. ΔE°′ e. F
Brown adipose tissue... A. Has a rich blood supply and many mitochondria B. Is used for heat generation in bats, shrews and other small mammals C. Expresses the protein thermogenin, which "short-circuits" the proton gradient used to drive ATP synthase D. Is typically located between the shoulder blades E. All of the above
For endothermic animals such as mammals and birds, environmental temperature below the lower critical limit is likely to result in which of the following outcomes? Select one: a. Metabolic rate is unchanged b. Metabolic rate decreases c. Metabolic rate increases d. Remains the same at tropical latitudes but increases in temperate latitudes.
Which of the following statements about metabolic heat is true? A. Relative to their body size, animals that maintain body temperature by metabolic heat production have lower metabolic rates than animals that do not use metabolic heat to maintain body temperature B. Metabolic heat is the product of inefficiencies in the biochemistry of life C. Homeotherms rely on metabolic heat to maintain body temperature D. Relative to their body size, larger animals lose more metabolic heat to the environment than smaller animals E. All of the above are true
Homeostatic systems maintain a steady-state set point over time using negative feedback. Which one of the following statement is NOT TRUE for stability of metabolic system: Select one: a. Step changes in a controlled variable will return the system to its original state using negative feedback b. Metabolic systems that oscillate must have multiple control variables c.A positive feedback system is stable over time, maintaining a steady state d. Perturbations from steady state, either positive or negative, result in recovery reactions that returm the system to is original state.
Jogging is considered aerobic exercise because the cardiovascular system (heart and blood vessels) can adjust to supply the oxygen needs of working cells. In contrast, sprinting the 100-meter dash might be called anaerobic (lacking oxygen) exercise, and golf nonaerobic exercise. Explain these last two observations.
Which of the following statements best explains the general process of cellular respiration? A. Living organisms use energy from the sun and water to create food in the form of sugar. B. Living organisms take in oxygen and water to create food in the form of sugars and energy. C. Living organisms breakdown sugar from food to combine with oxygen making usable energy. D. Living organisms take in oxygen and release carbon dioxide through the cells thereby providing energy. 2.
a A group of sientists studied the uptake of sodium of ions by living tissue (animal samples). To do this, they: • Used iwo flasks, Fand G • Placed equal masses of tissue into cach flask • Added an equal amɔunt of sodium (Na+) ions in each flask • Added a substance that preverts ATP formation by cel's in flask F • Measured the concentration of remaining sodium ions in cach flask The resuit of this investigation is shown in the graph below. 10 Flask F Concentration of sodium ions remaining in the soludion/arbitrary 4 units Fask G 10 20 30 40 50 60 70 Time / minutes i From the graph, calculate the rate of uptake of sodium ions by the ceils in flask G during the first 20 minutes of this investigation. ii. At the end of this investigation, the scientists concluded that the cells in flask G took up the sodium ions by active transport. Examine how the information given supports the conclusion. i. The curve for flask F becomes constant after 20 mimutes. Explain why.
It is important for the body to be able to cool itself even during moderate exercise. Suppose a 70kg man runs on a treadmill for 30min and at a (total) metabolic energy expenditure rate of 1000W remembering that the human body has a 25% efficiency. Suppose also that the man cannot perspire; and cannot lose any heat viaconduction, convection, and radiation. By how much would the man’s body temperature increase at the end of the 30min exercise? Express your answer in oC. A)8.8B)1.4C)0.5D)3.1E)5.7
Which one of the following chemical equations represent the aerobic cellular respiration? a. 6CO2 + 6H20 + Sunlight - > CH1206 + 602 b. CoH120+602-> 6C02 + 6H20 + 38 ATP molecules c. CoH120+602- 6C0, +6H,0 + 36 or 38 ATP molecules + heat d. CaH120+02 CO2+ H0+36 or 38 ATP molecules + heat choice