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Ninth Grade (Grade 9) Chemistry Questions

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Grade 9 Biochemical Pathways
Which most accurately describes the purpose of cellular respiration?
  1. to decompose glucose into energy that can be used for cellular functions
  2. to decompose usable energy into smaller parts
  3. to decompose different types of substances to be used to construct other parts of the cell
  4. all of the above
Grade 9 Periodic Table and Elements
Isotopes are atoms of an element
  1. with the same number of electrons but different numbers of protons.
  2. that are radioactive.
  3. with a magnetic charge.
  4. with the same number of protons but different number of neutrons.
Grade 9 Periodic Table and Elements
Grade 9 Biochemical Pathways
Grade 9 Bonds and Mixing
A solution of two or more metals such as brass is
  1. an alloy.
  2. a heterogeneous mixture.
  3. matter.
  4. a mixture.
Grade 9 Periodic Table and Elements
Rn is the symbol for which element?
  1. Radon
  2. Radium
  3. Rhenium
  4. Rhodium
Grade 9 Periodic Table and Elements
Grade 9 Macromolecules
Phospholipids are the primary component of
  1. cell membranes.
  2. cell walls.
  3. ribosomes.
  4. steroids.
Grade 9 Macromolecules
The substrate binds to the enzyme at the
  1. neuroreceptor.
  2. active site.
  3. reception area.
  4. receiving site.
Grade 9 Macromolecules

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