A&P Introduction

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Across
  1. 3. functional proteins that bring molecules together or split them apart in chemical reactions
  2. 8. a group of similar cells that all developed together and perform a certain function
  3. 9. relative constancy of the healthy body's internal environment; "staying the same"
  4. 11. a type of signal that moves away from an integrating center or other point of reference
  5. 12. any state or condition in the body that can change or vary
  6. 13. a functional group that is temporarily unattached and is highly reactive due to unpaired electrons
  7. 16. includes DNA and RNA; composed of nucleotides, a ribose or deoxyribose pentose sugar, and a phosphate group
  8. 19. a range of normal values of a regulated variable
  9. 20. a chemical bond formed by the transfer of electrons from one atom to another through a strong electrostatic force
Down
  1. 1. amplifies or reinforces a change that is occurring; does not help the body maintain homeostasis
  2. 2. a steroid found in the plasma membrane surrounding every cell in the body
  3. 4. chemical reactions that build chemical molecules from smaller subunits; require energy
  4. 5. a structure made up of several different kinds of tissues arranged to perform a special function
  5. 6. divides the body into right and left parts
  6. 7. midportion of the thoracic cavity that contains the heart and other structures
  7. 10. the smallest and most numerous structural unit that possess and exhibit the basic characteristics of living matter
  8. 14. the elements that make up a protein molecule and bind together to form chemical units
  9. 15. large organic molecules important in living organisms
  10. 17. chemical reaction that breaks down larger molecules into smaller chemical units; releases energy
  11. 18. an element that contains the same number of protons but different numbers of neutrons of a given element