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Ninth Grade (Grade 9) Macromolecules Questions

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Grade 9 Macromolecules
Amino acids are the building blocks for                .
  1. carbohydrates
  2. DNA and RNA
  3. lipids
  4. proteins
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

This question is a part of a group with common instructions. View group »

Animals utilize                 as an energy source that can be stored in the liver.
  1. proteins
  2. nucleic acids
  3. carbohydrates
  4. lipids
Grade 9 Macromolecules
What is the primary purpose and function of enzymes, in the context of reactions that occur within living cells?
  1. They lower the active site energy of the reaction.
  2. They lower the speed of the reaction.
  3. They lower the temperature of the reaction.
  4. They lower the activation energy of the reaction.
Grade 9 Macromolecules
The reactants in an enzyme-catalyzed reaction are called the
  1. active sites.
  2. elements.
  3. inhibitors.
  4. substrates.
Grade 9 Macromolecules
How do enzymes help chemical reactions to occur?
  1. They speed up reactions by adding more substrates to react with enzymes.
  2. They slow down reactions by increasing the activation energy.
  3. They speed up chemical reactions by lowering the activation energy required.
  4. They slow down reactions by changing the overall temperature of the reaction.
Grade 9 Macromolecules
Glucose and fructose are examples of
  1. double sugars.
  2. disaccharides.
  3. single sugars.
  4. polysaccharides.
Grade 9 Macromolecules
The energy needed to start a chemical reaction is called the
  1. lightning.
  2. heat energy.
  3. reaction energy.
  4. activation energy.
Grade 9 Macromolecules
Which pair is a monomer with its correct associated macromolecule?
  1. monosaccharide, lipid
  2. fatty acid, protein
  3. nucleotide, nucleic acid
  4. amino acid, carbohydrate
Grade 9 Macromolecules
Which is NOT a polysaccharide?
  1. glycogen
  2. starch
  3. sucrose
  4. cellulose
Grade 9 Macromolecules
DNA is a
  1. carbohydrate.
  2. fatty acid.
  3. lipid.
  4. nucleic acid.
Grade 9 Macromolecules
An enzyme will                         if the pH or temperature is not optimal.
  1. catalyze more reactions
  2. synthesize
  3. denature
  4. grow
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