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Worksheets1.4 Protein DB014
Total questions: 26
Worksheet time: 46mins
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
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
The diagram shows the structure of collagen. Based on the diagram, what is the structural level of collagen?
Primary
Secondary
Tertiary
Quartenary
During the formation of the peptide bond which of the following takes place?
Hydroxyl group is lost from its carboxyl group of one amino acid and a hydrogen atom is lost from its amino group of another amino acid
Hydrogen atom is lost from its carboxyl group of one amino acid and a hydroxyl group is lost from its amino group of another amino acid
Hydroxyl group is lost from its carboxyl group of one amino acid and a hydroxyl group is lost from its amino group of another amino acid
Hydrogen atom is lost from its carboxyl group of one amino acid and a hydrogen atom is lost from its amino group of another amino acid
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
Based on the diagram, the side chain of amino acid alanine is;
NH2
COOH
H
CH3
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 main bonding in the secondary structure of a protein is due to.....
covalent bonding
ionic bonding
hydrogen bonding
polar bonding
Our bodies can synthesize some of the essential amino acids we need, but where can we get all the ones we cannot synthesize?
eating animal protein
taking a supplement
eating plant protein
drinking plenty of water
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
Two or more polypeptides attached together and work as one unit
Primary
Secondary
Tertiary
Quaternary
The diagram shows a bond forming between two amino acids. What is the name of this reaction?
Condensation
Hydrolysis
Pepysis
Oxidation
