Adaptations for flight in birds include all EXCEPT Lightweight, hollow bones Higher oxygen consumption by more efficient mitochondria as compared to mammals The ability to change wing structure during flight in order to generate lift on both up- and downstroke O A higher metabolic rate and body temperature as compared to mammals.

Adaptations for flight in birds include all EXCEPT Lightweight, hollow bones Higher oxygen consumption by more efficient mitochondria as compared to mammals The ability to change wing structure during flight in order to generate lift on both up- and downstroke O A higher metabolic rate and body temperature as compared to mammals.

Biology Today and Tomorrow without Physiology (MindTap Course List)

5th Edition

ISBN:9781305117396

Author:Cecie Starr, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Christine Evers, Lisa Starr

Chapter5: Capturing And Releasing Energy

Section: Chapter Questions

Problem 4CT

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Considering animals with a body mass of about 100 g, rank thethree forms of locomotion from highest energy cost to lowestenergy cost. Were these the results you expected, based on yourown experience? What could explain the energy cost of runningcompared to that of flying or swimming?
Which of the following are TRUE, regarding patterns of Oxygen Consumption in horses traveling at different speeds, based of the following data: A Walk o Trot • Gallop 100 - Gallop 16 12 Trot Walk 2 3 4 6 2 3 4 Running speed (ms-) Running speed (ms-) When horses trot, metabolic Cost of Transport is independent of speed. OAt the optimum speeds within each gate, metabolic Cost of Transport is independent of speed. These data show that Horses have specific adaptations for walking, trotting, and galloping. Metabolic Rate is constant, regardless of speed To travel a distance of 10 miles, it is most energetically efficient for a horse to walk. Metabolic Cost of Transport increases with increases in running speed. Rate of oxygen consumption (ml 02s) Millilitres of oxygen consumed to move
Question 4 As a result of aging: O Striations increase O Muscle strength increases O Fat replaces muscle Muscles hypertrophy Reflexes increase
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Conflicting Claims About the Effect of Exercise on the Rate of Clothespin Squeezing Student A claims that a person will be able to squeeze a clothespin more times in a minute if the person exercises first. Student A suggests that exercising produces a faster pulse rate, which indicates that the blood is getting to the muscles faster. Student B claims that a person will be able to squeeze the clothespin more times in a minute if the person does not exercise first. Student B suggests that exercise takes energy away from the muscles, and a person who has been resting will have more energy. Which of the two students do you agree with? How could you find out for sure which claim is correct ?
3.4. About human skeletal muscle contraction, what are the correct statements? PHYSIOLOGY_basic (OJO) A muscle fiber is made by the parallel apposition of sarcomers. Generation of force relies on the formation of cross-bridges between actin and myosin filaments. In the process of contraction, adenosine triphosphate (ATP) is required both to drive the actin-myosin association-dissociation cycle and to recycle calcium back to the endoplasmic reticulum. Each muscle fiber is innervated by one neuron only. T tubules are plasma membrane invaginations of the sarcolemma that allow excitation-contraction coupling.
Resistance-trained skeletal muscles show O Increased size and increased mitochondrial density O Increased size and decreased twitch contraction time Increased size and increased type II fiber proportion O Decreased size and decreased mitochondrial density
QUESTION 8 How does the nervous system grade the force of muscle contraction? O a. Only by recruiting additional motor units O b. Only by varying the firing rate of the motor neurons O c. By varying the firing rate of the motor neurons and by recruiting additional motor units O d. By using more motor neuron pools
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.
Questions no 8 asap
Part 1 of 1- Question 1 of 1 During the actin-myosin ATP cycle, if there is no action potential on the muscle cell but lots of ATP available, which of the following statements will be true? • O A. Myosin will be attached to actin but there will be no ATP attached to the myosin head O B. ATP will have been split into ADP and Pi but a crossbridge will not have formed yet OC. The power stroke will have occurred, but no ATP can attach to the myosin head D. The crossbridge between the myosin head and actin will not break
O The toxin causes inappropriate firing of neurons leading to periods of rapid twitching that infected individuals experience as surnmation leading to tetanus. QUESTION 6 Mammalian lungs are very different in structure compared to amphibian lungs. The lungs of mammals have highly complex branching patterns of airways. The lungs of amphibians are simpler and more sac-like. Over all, the lungs of mammals are capable of much greater rates of gas exchange compared to amphibians. Why is this? O The more complex structure provides more surface area across which gas exchange can occur. O A complex structure means that gases have more contact time with gases compared to a simpler structure. O Mammalian lungs are usually much bigger relative to their bodies compared to amphibian lungs. O The respiratory membranes of mammals are able to diffuse gases across them much faster than amphibians. QUESTION 7 Click Save and Submit to sve and submit. Click Save AL Answers to save all answers. P Type here…