Proteins

What is a peptide bond?

• Bond that holds two amino acids together.
• A bond that holds hydrogen and oxygen molecules together.
• A bond that holds the phosphate group of one nucleotide and a sugar of a neighboring nucleotide.
• A bond that is formed by the sharing of electrons.

How many different amino acids are there?

• 15
• 20
• 25
• 30

The structure of proteins can be changed by environmental factors such as temperature or pH.

• True
• False

When a protein unfolds, it is

• Denatured
• Building
• Adding amino acids
• Making food

Each amino acid is different from the other due to....

• The R group
• The amino group
• The carboxyl group
• The central carbon

Enzymes are...

• Proteins
• Nucleic Acids
• Sugars
• Lipids

The polymer which folds into proteins

• Polypeptide
• Amino Acids
• Nucleic Acids
• Polynucleotides

With what 3 letters do enzymes typically end?

• -ose
• -ase
• -ese
• -tic

In the diagram, what is letter A? 

• product
• substrate
• enzyme-substrate complex
• active site

Letter D...

• active site
• enzyme
• substrate
• products