Proteins

Question 1

what is a structural protein

Answer 1

used to give support to the cell structures.
eg: proteins found in the cell membrane

Question 2

what is a hormone protein

Answer 2

chemical messengers that carry specific messages through the bloodstream.
eg: insulin signalling to the liver to store excess glucose in the form of oxygen

Question 3

what is an antibody protein

Answer 3

defend against pathogens such as bacteria and viruses.
eg: immunoglobulins that provide a specific defense against influenza viruses

Question 4

what is a receptor protein

Answer 4

allow the cells to recognise specific substances.
eg: livers cells have receptors for the signals sent by insulin

Question 5

what is an enzyme protein

Answer 5

speed up chemical reactions in the cell
eg: starch is broken down into maltose using amylase in the digestive system

Question 6

what is an enzyme.

Answer 6

function as biological catalysts
they are made of protein
they speed up chemical reactions
they are produced by all living cells
they are unchanged during chemical reaction

Question 7

describe the lock n key method

Answer 7

enzymes must bind to a molecule called a substrate, an enzyme will only fit with its specific substrate, the specific substrate binds to the enzyme at its active site and a product is produced by the reaction

Question 8

what is a degradation reaction

Answer 8

using an enzyme to break down a larger molecule into a smaller molecule

Question 9

what is a synthesis reaction

Answer 9

using an enzyme to build smaller molecules into a larger molecule

Question 10

what is optimum conditions

Answer 10

the conditions where an enzyme works best is called its optimum conditions``