Quiz: 3.3 Check Point, Proteins and N.A.

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

What is a protein (aka polypeptide):

• A polymer composed of many sugars.

• A polymer composed of many amino acids.

• A polymer composed of fatty acids.

• A polymer composed of nucleotides.

The diagram shows a bond forming between two amino acids. What is the name of this reaction?

• Dehydration Synthesis
• Hydrolysis
• Pepysis
• Oxidation

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

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

What elements make up amino acids?

• Carbon, hydrogen and oxygen only
• Carbon, hydrogen, oxygen and nitrogen only
• Carbon, hydrogen and phosphorus only
• Carbon, hydrogen, nitrogen and oxygen; and sometimes also sulfur

In red blood cells, a protein called ________ binds to oxygen.

• hemoglobin
• ATP
• RNA
• DNA

Nucleotides are made up of three parts. The three parts are... (HINT: Look at the model on my demo station/desk.)

• DNA, RNA, and a sugar

• a lipid, a fat, and an oil

• a carbohydrate, a protein, and a fat

• a sugar, a phosphate, and a nitrogenous base

The image shows which structure of protein?

• Primary

• Secondary

• Tertiary

• Quaternary

What elements make up Nucleic Acids?

• C, H, O, N, (S)

• C, H, O, N, P, (S)

• C, H, O, N, P

• C, H, O