Biochemistry Review

Proteins and Carbohydrates are both

• Polymers or large molecules made up of smaller subunits (monomers)

• Made of sugars (glucose)

• Lipids of large molecules

• Nucleotides of DNA

Which biomolecule is properly matched to its monomer?

• Nucleic acid: amino acid

• Protein (polypeptide):fatty acids

• Lipid: Nucleotide

• carbohydrate: monosaccharide (glucose)

Which of the following is the function of nucleic acids?

• Serve as energy storage

• Serve as the primary unit of cell membranes

• Store and transmit genetic information

• Serve as biological catalysts

One function of lipids is to store energy. What is another function of lipids in the human body?

• To form plasma (cell) membranes

• To make energy from the sun

• To control chemical reactions

• To provide quick energy for the cell

The molecule in the diagram plays what role in the body?

• Releasing energy

• Storing fat

• Forming the structure of nucleic acids like DNA

• Controlling blood glucose levels

Line B in the graph represents a reaction with an enzyme added. How did the enzyme affect the reaction?

• Increase the activation energy

• Increased the energy change

• Lowered the energy change

• Lowered the activation energy

Which statement is a valid (true) conclusion based on the graph shown? (Make sure you can support your answer from the graph).

• Temperature can affect the rate of reaction of an enzyme

• The maximum (highest) rate of respiration is at 57 degrees

• Growth can be controlled by enzymes

• The maximum (greatest) rate of digestion is at 45 degrees

What is the function of carbohydrates?

• Provide long term energy storage

• Store genetic information

• Provide fast, short term energy storage

• Build structure and makes enzymes

What do carbohydrates and lipids have in common?

• They both store energy

• They both store genetic information

• They both are involved in building structures such as bones and muscles

• They both speed up chemical reactions

All the following are true about enzymes EXCEPT...

• They reduce the amount of energy needed for a chemical reaction so it occurs faster

• Enzymes are proteins

• Enzymes usually end with "ase"

• Enzymes store the genetic code