Checkpoint: Proteins

What is a protein: 

• A polymer composed of many sugars.
• A polymer composed of many amino acids. 
• A polymer composed of fatty acids. 
• A polymer composed of nucleotides. 

How many different amino acids are there?

• 15
• 20
• 25
• 30

What is the monomer of proteins?

• amino acids
• polypeptides
• nucleotides
• monosaccharides

The diagram shows the structure of an amino acid. Which type of molecule is formed from amino acids?

• lipids
  
• proteins
  
• carbohydrates
  
• nucleic acids
  

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

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

What is a long chain of amino acids called?

• Polysaccharide

• Lipid

• Carbohydrate

• Polypeptide

• Nucleic acid

What is the name of the bond that joins two amino acids together?

• Ester bond

• Glycosidic bond

• Peptide bond

• Nucleic bond

All proteins

• have a unique structure that determines their unique function.

• are exactly the same in function but different in structure.

• are exactly the same in structure but different in function.

• are enzymes.

Which protein structure describes the sequence of amino acids?

• Primary

• Secondary

• Tertiary

• Quaternary

Alpha helix and beta sheet are examples of what type of protein structure?

• Primary

• Secondary

• Tertiary

• Quaternary