1.11 mini series

Question 1

Receptor proteins

Answer 1

They extend through the cell membrane. As the communication office of the cell, they allow the cell to interact with other cells.

Question 2

Receptor proteins con.

Answer 2

The part of the receptor protein on the exterior of the cell surface binds to a molecule

this causes the portion of the protein on the inside of the cell to change shape triggering a reaction within the cell.

The specificity of receptor proteins allow the cell to respond to the outside environment in many differnt ways.

Question 3

Enzymes

Answer 3

Globular in shape with a specific 3d shape

catalyse reactions

eg. amylase converts starch into maltose

Enzymes have a specific shape that enables them to catalyse specific reactions

Question 4

Antibodies

Answer 4

Globular proteins that fight disease by binding to foreign particles

must have a specific shape in order to bind with a specific antigen

Question 5

Explain why the three-dimensional shape of a protein is critical to its function

Answer 5

Proteins are complex molecules that form into very specific three dimensional shapes

The sequence of amino acids determines how a protein folds into its functional state

the shape of a protein allows it to function as required. Proteins such as cell membrane proteins, enzymes, and antibodies, require a specific 3D shape to suit their function.