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5 Written questions

5 Matching questions

  1. Adenosine triphospate (ATP)
  2. Inorganic compounds
  3. Decomposition Reaction
  4. protons
  5. ribonucleic acid(RNA)
  1. a 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.
  2. b Atomic particles with a positive charge.
  3. c Lack carbon and tend to be small, simple molecules.
  4. d Occurs when a molecule is broken down into smaller molecules, atoms or ions. AB->A+B
  5. e 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.

5 Multiple choice questions

  1. small molecules that are the building blocks of proteins.
  2. functional proteins that act as biological catalysts. A catalyst is a substance that increases the rate of a chemical reaction without becoming part of the product or being changed itself.
  3. Bond formed when electrons are completely transferred from one atom to another.
  4. When two or more atoms combine chemically.
  5. The type of exchange reaction in which an acid and a base interact.

5 True/False questions

  1. radioisotopesAtoms with the same number of protons and electrons but vary in the number of neutrons they contain.


  2. pHCharged particles


  3. EnergyThe ability to do work or to put matter into motion.


  4. Organic compoundsLack carbon and tend to be small, simple molecules.


  5. BasesHydroxides ionize and dissociate in water releasing hydroxyl ions (OH-)