Protein

Question 1

R Group

Answer 1

Variable Groups on Amino Acids

Question 2

Two main groups in amino Acids

Answer 2

Amine Group

Carboxyl Group

Question 3

How many Amino Acids occur naturally

Answer 3

20

Question 4

Bond between amino acids

Answer 4

Peptide bond

Question 5

Polypeptide

Answer 5

Chains of three or more amino acids

Question 6

Terminals

Answer 6

Ends of the chain.

One side is the amine terminal and the other side is the carboxyl terminal.

Question 7

Primary Structure

Answer 7

Sequence of how the amino acids are joined together.

Question 8

Secondary Structure

Answer 8

The N-H and C=O interact via hydrogen bonds:
allowing to coil up into an alpha helix
allowing to lie parallel to one another into beta pleated sheets.
Depends on 1o

Question 9

Tertiary Structure

Answer 9

Folding of proteins into its final shape.

Dependent on R group of Amino Acids

Question 10

Bonds formed in Tertiary structure

Answer 10

Hydrophobic/Hydrophilic interactions
Hydrogen Bonds
Ionic Bonds
Disulphide bridges

Question 11

Quaternary Structure

Answer 11

Two or more individual proteins called subunits interacting with one another.
Similar to 3o but individual proteins rather than one single protein

Question 12

Haemoglobin

Answer 12

Required for oxygen transport.

Contains 4 subunits: 2 alpha and 2 beta

Question 13

Globular proteins

Answer 13

Spherical, water-soluble proteins eg. enzymes

Question 14

Fibrous proteins

Answer 14

Long, insoluble structural proteins.

Question 15

Prosthetic Group

Answer 15

Non-protein component of a conjugated protein.

Question 16

Conjugated Proteins

Answer 16

Globular proteins that contain a non-protein component called a prosthetic group.