Protein Structure

Which of the following bond(s) do(es) NOT exist in a secondary structure?

• Peptide bond

• Hydrogen bond

• Disulphide bond

• Ionic bond

The difference between tertiary and quartenary structure is:

• Tertiary structure has double bond whereas quartenary structure does not have double bond

• Tertiary structure consists of one polypeptide chain whereas quartenary structure consists of more than one polypeptide chains

• Tertiary structure is fibrous whereas quartenary structure is globular

• Tertiary structure is water-soluble whereas quartenary structure is lipid soluble

The repeating units of protein are

• Amino acids

• Glucose

• Fatty acid

• Peptides

Tags

NGSS.HS-LS1-6

The polypeptide in the diagram consists of;

• 3 amino acids and 3 peptide bonds

• 3 amino acids and 2 peptide bonds

• 4 amino acids and 2 phosphodiester bonds

• 3 amino acids and 2 phosphodiester bonds

Which of the following bond(s) can be found in a tertiary structure?

• hydrogen bond

• disulphide bridge

• hydrophobic interaction

• all of the above

Haemoglobin is a quartenary protein because;

• It has more than one peptide bonds

• Its shape is globular

• It consists of more than one polypeptide chains

• It has iron in each heme group

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

What is one of the functions of a protein?

• cell energy

• enzymes

• long term energy storage

• contain genetic information

Tags

NGSS.HS-LS1-6

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

• polypeptide
• polysaccharide
• polyester
• polynucleotide

Tags

NGSS.HS-LS1-1

NGSS.HS-LS1-6