Protein Structure and Function

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

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

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

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

Why is folding so important in proteins?

• It gives them a unique, functional shape

• It makes them look tidier

• It makes every protein molecule different from the next even if they are the same type

• The folding is random so is not that important at all

Tags

NGSS.HS-LS1-1

The tertiary structure folding in proteins is primary due to the interactions of....

• the 'R' groups

• the 'P' groups

• the 'A' groups

• the 'S'

Tags

NGSS.HS-LS1-6

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

Proteins that are roughly spherical

• globular proteins

• fibrous proteins

• enzymatic proteins

• storage proteins

• motor proteins