Comprehensive Business Planning for Startups
35 Questions
2 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the primary purpose of cookies on this website?

  • To share users' information with third-party providers
  • To track users' personal information
  • To make the site work as expected (correct)
  • To block users' access to certain features

    • What happens if you block functional cookies?

  • The website will not load at all
  • You will be logged out of your account
  • The website's functionality will be unaffected
  • Some services may not function properly (correct)

    • What do social media cookies enable you to do?

  • Access premium content
  • Make online purchases
  • Track your browsing history
  • Share content with your friends and networks (correct)

    • What kind of information do cookies store or retrieve?

    <p>Information related to you, your preferences, or your device</p> Signup and view all the answers

    Why do the website owners respect users' right to privacy?

    <p>Because they respect users' right to privacy</p> Signup and view all the answers

    What is the primary function of food energy in the body?

    <p>To operate various organs and perform external work</p> Signup and view all the answers

    What percentage of energy is used by the skeletal muscle and heart under resting conditions?

    <p>25%</p> Signup and view all the answers

    What is the concept that the body's energy is subject to?

    <p>The law of conservation of energy</p> Signup and view all the answers

    What percentage of food energy is lost in feces and urine?

    <p>5%</p> Signup and view all the answers

    What is the primary function of the liver and spleen in terms of energy usage?

    <p>To operate various organs</p> Signup and view all the answers

    What is the percentage of energy used by the brain under resting conditions?

    <p>19%</p> Signup and view all the answers

    What is the assumption made in the application of the first law of thermodynamics in the human body?

    <p>No food or drink is taken and no feces or urine is excreted during the interval of time considered</p> Signup and view all the answers

    What is the formula for power in physics?

    <p>P = Δw/Δt</p> Signup and view all the answers

    What does the equation Δu = ΔQ - Δw represent?

    <p>The change in stored energy in the body</p> Signup and view all the answers

    What happens to the stored energy in the body when it is not doing any work and is at a constant temperature?

    <p>It decreases</p> Signup and view all the answers

    What is the efficiency of the human body as a machine?

    <p>Usually around 20%</p> Signup and view all the answers

    What is the unit of energy value of food referred to by nutritionists?

    <p>Kilocalorie</p> Signup and view all the answers

    What is the maximum work capacity of the human body dependent on?

    <p>The rate of oxygen consumption in the working muscles</p> Signup and view all the answers

    What is the main characteristic of homeothermic animals such as birds and mammals?

    <p>They can control their body temperature despite environmental changes</p> Signup and view all the answers

    What is the rate of change of stored energy in the body equal to?

    <p>ΔQ/Δt - Δw/Δt</p> Signup and view all the answers

    What is the body's basic source of energy?

    <p>Food energy</p> Signup and view all the answers

    What happens to the body temperature of a deceased person after death?

    <p>It decreases at a predictable rate</p> Signup and view all the answers

    What can be estimated using the body temperature of a deceased person?

    <p>The time of death</p> Signup and view all the answers

    What is the normal human body temperature?

    <p>37°C</p> Signup and view all the answers

    What is the range of variation in body temperature for a single individual?

    <p>±0.5°C</p> Signup and view all the answers

    What is the name of the part of the brain that controls body temperature?

    <p>Hypothalamus</p> Signup and view all the answers

    What is the primary mechanism of heat loss after heavy exercise?

    <p>Evaporation</p> Signup and view all the answers

    What factor does NOT affect body temperature?

    <p>Eye color</p> Signup and view all the answers

    How does the body receive radiant energy from its surroundings?

    <p>Through radiation</p> Signup and view all the answers

    According to the equation, what is the value of Kc when the wind speed is 5 m/sec?

    <p>11.20</p> Signup and view all the answers

    What is the primary mode of heat loss under normal temperature conditions and in the absence of hard work or exercise?

    <p>Radiation and convection</p> Signup and view all the answers

    How much heat is carried away when 1 liter of water evaporates from the body?

    <p>580 kcal</p> Signup and view all the answers

    What percentage of the body's heat loss is due to respiratory heat loss under typical conditions?

    <p>14%</p> Signup and view all the answers

    What is the amount of heat lost per hour due to perspiration, even if the body does not feel sweaty?

    <p>7 kcal/hr</p> Signup and view all the answers

    What is the special ability of the body in terms of heat regulation in the hands and feet?

    <p>To select the path of returning blood</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser