Biomolecules and Enzymes Quiz

Proteins and polysaccharides are polymers. These polymers are formed by dehydration synthesis. Which statement correctly identifies a difference in the structure of proteins and polysaccharides?

• Only polysaccharides are comprised of repeating units of cytosine, adenine, guanine, and thymine.

• Only proteins are formed from amino acids joined by peptide bonds.

• Only polysaccharides can be folded and twisted to very specific shapes.

• Only proteins can be large molecules with thousands of subunits.

Which of the following biomolecules typically contains both nitrogen and phosphorous (phosphate)?

• Lipid

• Protein

Enzyme function is often compared to a lock and key. The lock and key model helps explain the importance of which property of an enzyme?

• Movement

• Physical structure

What is the function of nucleic acids?

• Stores energy

• Stores genetic information

Tags

NGSS.HS-LS1-1

Which biomolecule is responsible for insulation and energy storage?

• Protein

• Nucleic Acid

• Lipid

• Carbohydrate

Why do people who have a fever usually feel they have no energy, or are really tired?

• Fever interferes with carbohydrate digestion

• Enzymes that control energy reactions lose their shapes at high temperatures

• Proteins lose fatty acid molecules at the end of the biomolecular chain

• DNA gets twisted into a double helix at high temperatures

Tags

NGSS.HS-LS1-7

A biological supply company is advertising the synthesis of a new compound. Scientists note that when the compound is added to a particular chemical reaction, the reaction rate increases dramatically. The compound is likely a--

• Carbohydrate

• Lipid

• Protein

• Nucleic acid

Tags

NGSS.HS-PS1-5

Hemoglobin, insulin, albumin, and maltase, which are composed of chains of amino acids, are examples of -

• Proteins

• Nucleic Acids

Which of the following best describes the composition of a nucleotide?

• A pair of six-carbon rings attached to each other

• A carbon atom joined to hydrogen and three functional groups

• A chain of carbon atoms with a carboxyl group bonded to one end

• A five-carbon sugar attached to a phosphate group and a nitrogenous base

What are foods that are high in carbohydrates?

• Eggs, fish, poultry

• Cheese, meats, vegetables

• Bread, potatoes, and pasta

• Multitude of oils, butter and condiments