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Ninth Grade (Grade 9) Macromolecules Questions

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Grade 9 Macromolecules
The secondary structure of a protein involves
  1. a chain of amino acids.
  2. alpha-helices and beta-pleated sheets.
  3. three-dimensional folding.
  4. multiple chains of amino acids.
Grade 9 Macromolecules
What macromolecule contains the code for building proteins?
  1. collagen
  2. DNA
  3. polysaccharide
  4. RNA
Grade 9 Macromolecules
Which macromolecule is a short-term energy source?
  1. carbohydrates
  2. lipids
  3. nucleic acids
  4. proteins
Grade 9 Macromolecules
Carbohydrates primarily serve what purpose?
  1. to aid in digestion
  2. to break down molecules
  3. to regulate the flow of acid
  4. to supply the body with energy
Grade 9 Macromolecules
What are the six most frequently found atoms in living things?
  1. oxygen, chlorine, helium, lithium, sulfur, and nitrogen
  2. hydrogen, helium, lithium, benzene, boron, and carbon
  3. carbon, phosphorus, sulfur, oxygen, nitrogen, and hydrogen
  4. magnesium, sodium, carbon, oxygen, potassium, and silicon
Grade 9 Macromolecules
Proteins serve in a number of important functions in organisms. (Select all that apply.)
  1. provide a major source of energy
  2. form cellular and tissue structures
  3. transport substances into or out of cells
  4. help to fight disease
Grade 9 Macromolecules
What macromolecule is made up of building blocks of amino acids?
  1. carbohydrate
  2. DNA
  3. lipid
  4. protein
Grade 9 Macromolecules
What makes up the backbone of the DNA chain?
  1. RNA
  2. nucleotides
  3. phosphate groups and sugars
  4. hydrogen bonds and nitrogenous bases
Grade 9 Macromolecules
Which macromolecule is primarily used as a fuel in animals and as a building material in plants?
  1. carbohydrates
  2. lipids
  3. nucleic acids
  4. proteins
Grade 9 Macromolecules
The monomers of lipids are
  1. amino acids and fatty acids.
  2. glycerol and amino acids.
  3. glycerol and fatty acids.
  4. glucose and fatty acids.
  5. glycerol and peptides.
Grade 9 Macromolecules
                are commonly known as fats, oils, and waxes.
  1. Carbohydrates
  2. Nucleic acids
  3. Proteins
  4. Sugars
  5. Lipids
Grade 9 Macromolecules
Which molecule is NOT an example of a protein?
  1. collagen
  2. enzyme
  3. hormone
  4. wax
Grade 9 Macromolecules
What enzyme found in saliva breaks chemical bonds between sugar monomers in starches?
  1. amylase
  2. chyme
  3. pepsin
  4. hydrochloric acid
Grade 9 Macromolecules
What monomers make up the nucleic acids DNA and RNA?
  1. amino acids
  2. carbohydrates
  3. enzymes
  4. nucleotides
  5. simple sugars
Grade 9 Macromolecules
                are macromolecules that are not soluble in water.
  1. Proteins
  2. Nucleic acids
  3. Carbohydrates
  4. Lipids
Grade 9 Macromolecules
DNA and RNA are examples of what type of macromolecule?
  1. proteins
  2. nucleic acids
  3. carbohydrates
  4. lipids
Grade 9 Macromolecules
Why must cells produce many different kinds of enzymes?
  1. Enzymes are consumed quickly.
  2. Most cellular reactions need a specific, unique enzyme.
  3. They need some way to use the proteins they consume.
  4. Enzymes are not very helpful in speeding up reactions.
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