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5 Written questions

5 Matching questions

  1. free energy
  2. catalysts
  3. epiglottis
  4. autotrophs
  5. mechanical work
  1. a organisms that obtain energy and nutrients from nonliving sources such as the Sun, minerals, and the air (e.g. plants, certain bacteria, organisms that capture energy from hyrodgen sulfide)
  2. b the portion of chemical energy that is available to do work
  3. c chemicals that lower activation energies
  4. d include movement
  5. e a trapdoor-like tissue that normally prevents food and liquids from entering the trachea (airway)

5 Multiple choice questions

  1. the portion of an enzyme that attaches to the substrate through weak chemical bonds
  2. an enyzme in saliva that begins digestion of starch; converts starch to dissarcharides
  3. a microscopic blood vessel penetrating the tissue and consisting of a single layer of cells that allows exchange between blood and tissue fluids
  4. an organism in its earliest stages of development
  5. the breakdown of large pieces of food into smaller ones; increases surface area of food making chemical digestion easier

5 True/False questions

  1. energy conversion in a living thingliving systems can conserve and use some of the energy released in chemical reactions

          

  2. chemoautotrophsorganisms that obtain energy and nutrients from nonliving sources such as the Sun, minerals, and the air (e.g. plants, certain bacteria, organisms that capture energy from hyrodgen sulfide)

          

  3. degradative reactionsreactions that build proteins from amino acids and build tissues from the proteins (consume free energy)

          

  4. carbohydrate digestionthe breakdown of large pieces of food into smaller ones; increases surface area of food making chemical digestion easier

          

  5. fecesthe waste material expelled from the digestive tract and eliminated through the anus

          

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