ZuoTi.Pro
Question

38. BIO The rate at which a resting person converts food energy is called ones basal metabolic rate (BMR). Assume that the resulting internal energy leaves a persons body by radiation and convection of dry air. When you jog, most of the food energy you burn above your BMR becomes internal energy that would raise your body temperature if it were not eliminated. Assume that evaporation of perspiration is the mechanism for eliminating this energy. Suppose a person is jogging for maximum fat burning, converting food energy at the rate 400 kcal/h above his BMR, and putting out energy by work at the rate 60.0 W. Assume that the heat of evaporation of water at body temperature is equal to its heat of vaporization at 100°C. (a) Determine the hourly rate at which water must evaporate from his skin. b) When you metabolize fat, the hydrogen atoms in the fat molecule are transferred to oxygen to form water. Assume that metabolism of 1.00 g of fat generates 9.00 kcal of energy and produces 1.00 g of water. What fraction of the water the jogger needs is provided by fat metabolism?

science   physics   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1


20.645 kg } 2he o.ou^ IJIh of uoatt (ocuN^ 13 Asu,on rol 0.0688 = 6.88 6.88

0 0
Add a comment
Know the answer?
Add Answer to:
38. BIO The rate at which a resting person converts food energy is called one's basal...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • When you jog, most of the food energy you burn above your basal metabolic rate (BMR)...

    When you jog, most of the food energy you burn above your basal metabolic rate (BMR) ends up as internal energy that would raise your body temperature if it were not eliminated. The evaporation of perspiration is the primary mechanism for eliminating this energy. Determine the amount of water you lose to evaporation when running for 46 minutes at a rate that uses 400 kcal/h above your BMR. (That amount is often considered to be the "maximum fat-burning" energy output....

  • za. Which of the following statements about basal metabolic rate (BMR) is true? a heat and...

    za. Which of the following statements about basal metabolic rate (BMR) is true? a heat and cold are associated with a higher BMR b a person with more fat and less muscle will have a higher BMR c. nicotine and caf feine are associated with a lower BMR d. adults have higher BMRs than children 23. The thermic effect of food refers to the calorie cost of a. watching someone else eat b, digestion and absorption c. consuming spicy food...

  • person's basal metabolic rate (BMR) is the rate at which energy is expended while resting in...

    person's basal metabolic rate (BMR) is the rate at which energy is expended while resting in a neutraly and kilocalories (or Calories) per hour. temperate environment. A ty pical BMR is 6.62 106 May. Convert this BMR to unts of watts (a) watts (b) klocalories per hour kcalh Suppose a 1.00 kg object's gravitation potential energy is increased at g-9.80 mys) a rate equal to this typical BMR Find the rate of change of the object's height in m/s. (The...

  • The human body converts internal chemical energy into work and heat at rates of 60 to...

    The human body converts internal chemical energy into work and heat at rates of 60 to 125 W (called the basal metabolic rate). This energy comes from food and is usually measured in kilocalories [1 kcal = 4.186 kJ]. (Note that the nutritional `Calorie' listed on packaged food actually equals 1 kilocalorie). How many kilocalories of food energy does a person with a metoblic rate of 109.0 W require per day? (Assume 100 percent efficiency.)

  • Be sure to answer all parts. What is the change in internal energy (in J) of...

    Be sure to answer all parts. What is the change in internal energy (in J) of a system that absorbs 0.769 kJ of heat from its surroundings and has 0.694 kcal of work done on it? Give your answer in scientific notation. Enter your answer in the provided box. If an athlete expends 3174 kJ/h, how long does she have to play to work off 1.00 lb of body fat? Note that the nutritional calorie (Calorie) is equivalent to 1...

  • 1.A pound of body fat stores an amount of chemical energy equivalent to 3,500 Cal. When...

    1.A pound of body fat stores an amount of chemical energy equivalent to 3,500 Cal. When sleeping, the average adult burns or expends about 0.40 Cal/h for every pound of body weight. How long would the person have to sleep continuously to lose 1 lb of body fat? (Assume the person weighs 145 lb.) h 2.On a brisk walk, a person burns about 365 Cal/h. At this rate, how many hours of brisk walking would it take to lose 1...

  • Calculate the rate of energy loss due to thermal radiation from an unclothed person if the average skin temperature is...

    Calculate the rate of energy loss due to thermal radiation from an unclothed person if the average skin temperature is 37 °C and the room temperature is 20 °C. You may sume a total surface area of 1.5 m and a skin emissivity value of 0.9. How much energy (from food) must be consumed per day to compensate for this loss? If the person is surrounded by a layer of insulation of thickness 1.0 cm with a thermal conductivity of...

  • Questions on Metabolic Pathways & Energy balance 81 Match the items. #2 What can be said...

    Questions on Metabolic Pathways & Energy balance 81 Match the items. #2 What can be said about the glycolysis pathway? a. Initial breakdown of carbohydrate b. Initial breakdown of fat C. Made by all three energy nutrients d. Removal of nitrogen from an amino acid e. Most ATP is produced a. requires oxygen. b. is the breakdown of pyruvate to acetyl COA. C. converts acetyl CoA into pantothenic acid. od results in the formation of pyruvate. 1. Electron Transport Chain...

  • Thermal question A 60-kg hiker plans to climb Mt Kosciuszko (2228 m) starting from Thredbo (1365m). Assume that she is 25% efficient at converting chemical energy from food into mechanical work,...

    Thermal question A 60-kg hiker plans to climb Mt Kosciuszko (2228 m) starting from Thredbo (1365m). Assume that she is 25% efficient at converting chemical energy from food into mechanical work, and that essentially all the work goes into the vertical climb. (a) (3 marks) With reference to the data above, how many servings of Nutrigrain should she eat to provide enough energy for the climb? (b) (6 marks) Climbing a mountain warms you up, and makes you sweat one...

  • Study Guide 321 Student Name Date Course Section Chapter TERMINOLOGY A. An eating disorder characterized by...

    Study Guide 321 Student Name Date Course Section Chapter TERMINOLOGY A. An eating disorder characterized by the refusal to maintain a minimally normal body weight Hunger B. An internal signal that stimulates a person to acquire and Anthropometrics consume food C. A term used to define overfatness with potential adverse health effects and a BMI of over 30 Anorexia Nervosa. D. The type of activity which strengthens muscles and improves flexibility, bone density, and muscle endurance Satiety E. A method...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT