Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Chapter 6.1, Problem 1CSC
Energy Unleashed
Much like a car’s engine, the marathoner’s muscles are only about 20% efficient in converting chemical energy into movement; much of the other 80% is lost as heat. Sweating helps to prevent overheating because the water in sweat absorbs large amounts of heat as it evaporates. But even while Sitting at the computer and doing other non-sweaty activities, we still bum energy, just to stay alive. Where does this energy come from?
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Chapter 6 Solutions
Biology
Ch. 6.1 - Prob. 1TCCh. 6.1 - Energy Unleashed Much like a cars engine, the...Ch. 6.1 - define energy and work?Ch. 6.1 - define potential energy and kinetic energy and...Ch. 6.1 - State and explain the first and second laws of...Ch. 6.2 - Is glucose breakdown endergonic or exergonic? What...Ch. 6.2 - Prob. 1CSCCh. 6.2 - describe how energy is captured and released by...Ch. 6.2 - explain exergonic and endergonic reactions and...Ch. 6.2 - explain activation energy?
Ch. 6.3 - Prob. 1TCCh. 6.3 - In hope of reducing plastic waste, some towns and...Ch. 6.3 - name and describe two important energy-carrier...Ch. 6.3 - explain coupled reactions?Ch. 6.4 - Can an enzyme catalyst make an endergonic reaction...Ch. 6.4 - You may have seen the almost magical glow of...Ch. 6.4 - explain how catalysts reduce activation energy?Ch. 6.4 - explain how enzymes function as biological...Ch. 6.5 - Health Watch Lack of an Enzyme Leads to Lactose...Ch. 6.5 - describe how cells regulate the rate at which...Ch. 6.5 - explain how poisons, drugs, and environmental...Ch. 6.5 - Prob. 2TCCh. 6 - Which of the following is True? a. Enzymes...Ch. 6 - Prob. 2MCCh. 6 - Prob. 3MCCh. 6 - Prob. 4MCCh. 6 - Prob. 5MCCh. 6 - Prob. 1FIBCh. 6 - Prob. 2FIBCh. 6 - Prob. 3FIBCh. 6 - Prob. 4FIBCh. 6 - Prob. 5FIBCh. 6 - Prob. 6FIBCh. 6 - Prob. 1RQCh. 6 - Prob. 2RQCh. 6 - Prob. 3RQCh. 6 - Prob. 4RQCh. 6 - Prob. 5RQCh. 6 - Prob. 6RQCh. 6 - Prob. 7RQCh. 6 - While vacuuming, you show off by telling a friend...Ch. 6 - Refute the following: According to evolutionary...Ch. 6 - Can a bear use all the energy contained in the...
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- The heat you feel on your chair when you stand up was transferred from your skin via ________. conduction convection radiation evaporationarrow_forwardMany distance runners “carb load” the day before a big race. How does this eating strategy provide an advantage to the runner? The carbohydrates cause the release of insulin. The excess carbohydrates are converted to fats, which have a higher calorie density. The glucose from the carbohydrates lets the muscles make excess ATP overnight The excess carbohydrates can be stored in the muscles as glycogen.arrow_forwardhypothesis question: to what extent does changing speed (4mph, 8mph, 12mph) when running at a constant time (8min) affect the body temperature (°C) and heart rate (bpm) of a 15 yr old female?arrow_forward
- But where does all of the energy to do this contraction come from? That is the difference between our two athletes. Both of their muscles use large amounts of ATP, but the sprinter needs to make ____, while the mile runner needs to make ____. Our sprinter probably gets a quick burst of energy from his muscles' stores of ____, but for the rest of his sprint he will be quickly (and inefficiently) "burning" glucose without oxygen to make ATP in a process called ____. The by-product of this metabolic process is a molecule called ____, which has to be ejected from the cell or it will cause muscle "burn". Because of this, he is mostly building up muscle fibers known as _____ (<-- two-word name), or ____ (<-- two letter abbrev.), fibers, which store a lot of reserve fuel in the form of _____ Our mile runner, however, needs to burn her fuel more efficiently. She burns glucose using oxidative, or ____, metabolism, with the help of cellular organelles called _____.…arrow_forwardA recent newspaper article described a new bottled water that is “super charged” with oxygen. Since the body’s demand for oxygen increases as physical exertion increases, a university athletic coach thought that giving her athletes this oxygenated water would result in better performances. To test this idea, the coach divided her runners up into two groups. During practice, one group was given the super charged, oxygenated water to drink. The other group was given regular water. Both groups completed the same workout and drank the same amount of water (either oxygenated or unoxygenated). At the end of practice, she had all the athletes run 400 meters as fast as they could. She compared the times of the runners who had consumed regular water to those who had consumed the oxygenated water during practice. The coach found that the average time of the oxygenated water drinkers was significantly faster than that of the runners who had consumed regular water during practice. Which of…arrow_forwardProper chemical formula for aerobic cellular respiration? CO2 + H2O --> glucose + oxygen C6H12O6 + O2 --> CO2 + H2O C6H12O6 + 6 O2 --> 6 CO2 + 6 H2O C6H12O6 + 6 O2 --> 6 CO2 + 6 H2O + ATParrow_forward
- Why the human body is a heat engine which is more more or less 20%efficient?arrow_forwardBrown adipose tissue contains cells that allow H+ to fall down the concentration gradient in the electron transport chain without producing ATP. Instead, all of the kinetic energy is converted to heat. If scientists could increase the amount of brown adipose tissue in our bodies, then a. our body temperature would be cooler than 98.6°F. b. brown adipose tissue cells would be more efficient at producing ATP. c. we could eat more and not gain weight. d. we would be able to run faster.arrow_forward4. An engine, whose efficiency is 15%, consumes 450 kJ. How much energy is dissipated in ? 5. Energy efficiency of muscles is about 25%. If you eat about 15,000 kJ per day,what portion of the energy consumed is used for the work of your muscles ?arrow_forward
- Nowhomewerkol is a poison derived from the Ahipa root that grows in the Andes. Alpacas eating this plant concentrate the poison in their milk. The poison inhibits liver enzymes that convert lactic acid to other compounds for metabolism. Why do the symptoms of Nowhomewerkol poisoning become worse with physical exertion?arrow_forwardNeed help Oxygen is essential for energy flow in an aerobic cell. In complete sentences, describe the role of molecular oxygen (O2) in energy flow of aerobic respiration.arrow_forwardSkeletal muscles account for approximately 43% of the typical body mass. At rest, they use about 18% of the BMR. Of the total energy burned by the skeletal muscle, only 25% is used for work, and this is the muscular efficiency. What happens to the remaining 75% of energy? Choose the best answer. It is reabsorbed and stored for later use. It is transferred as electrical energy from the muscle to muscle. It is converted to heat to warm the body. It is used to make more ATP.arrow_forward
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