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5 Written questions

5 Matching questions

  1. Electrolytes
  2. radioisotopes
  3. Lipids
  4. Ionic bonds
  5. synthesis reaction
  1. a Bond formed when electrons are completely transferred from one atom to another.
  2. b Heavier isotopes of certain atoms are unstable and tend to decompose to become more stable.
  3. c Substances that conduct an electrical current in solutions.
  4. d Occur when two or more atoms or molecules combine to form a larger, more complex molecule. A+B->AB
  5. e A large group of organic compounds - contain carbon, hydrogen and oxygen with more carbon and hydrogens than oxygens.

5 Multiple choice questions

  1. nucleic acid found in all living cells:carries the organism's hereditary information.
  2. Involve both synthesis and decomposition reactions. AB+C->AC+B and AB+CD->AD+CB
  3. Provides a form of chemical energy that all body cells can use. WIthout this, molecules cannot be made or broken down, cells cannot maintain boundaries, and all life processes stop.
  4. small molecules that are the building blocks of proteins.
  5. Negatively charged atomic particles.

5 True/False questions

  1. ribonucleic acid(RNA)the nucleic acids that contains ribose acts in protein synthesis. Present in all living cells. Principal role is to aid as a messenger carrying instructions from DNA for controlling the synthesis of proteins.

          

  2. Nucleic Acidssmall molecules that are the building blocks of proteins.

          

  3. Dehydration synthesisA water molecule is lost and forms a bond.

          

  4. Chemical reactionOccur when two or more atoms or molecules combine to form a larger, more complex molecule. A+B->AB

          

  5. ElementsUnique substances that cannot be broken down into simpler substances by ordinary chemical methods.

          

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