Food Chem - Exercise Structure of Protein

What is the monomer of a protein?

• amino acid
• monosaccharide
• fatty acid
• nucleic acid

Tags

NGSS.HS-LS1-6

Which of the following describes the secondary structure of proteins?

• The sequence of amino acids

• The α-helix and β-pleated sheet folding

• The folding of the polypeptide chain due to the 'R' groups

• The joining of different protein molecules to make one big molecule

The name of the initial chain of monomers in a protein is called.....

• polypeptide
• polysaccharide
• polyester
• polynucleotide

Tags

NGSS.HS-LS1-1

The main bonding in the secondary structure of a protein is due to.....

• covalent bonding

• ionic bonding

• hydrogen bonding

• polar bonding

What gives a protein its unique shape?

• the unique sequence of amino acids in its polypeptide chain

• the unique folding due to the sequence of amnio acids in the polypeptide chain

• hydrogen bonding & unique interactions between the 'R' groups

• all of these

The entire polypeptide forms a three-dimensional structure

• Primary

• Secondary

• Tertiary

• Quaternary

Two or more polypeptides attached together and work as one unit

• Primary

• Secondary

• Tertiary

• Quaternary

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.

Tags

NGSS.HS-LS1-6

How many different essential amino acids are there?

• 15

• 20

• 25

• 30

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

• Condensation

• Hydrolysis

• Pepysis

• Oxidation