proteins

Question 1

what is the test for protein

Answer 1

add a few drops of biuret reagent to the sample you want to test
Blue to purple if present

Question 2

what are some examples of proteins

Answer 2

enzymes
cell membrane/in cell membrane
collagen
haemoglobin
antibodies
hormones

Question 3

what are the groups that make up an amino acid

Answer 3

amine group
r group
carboxyl group

Question 4

what does an amine group consist of

Answer 4

1 N AND 2 H

Question 5

What does an R group consist of

Answer 5

C and an group

Question 6

what does a carboxyl group consist of

Answer 6

one C pne OH and one O

Question 7

describe peptide bond formation

Answer 7

It is between the amine group of one amino acid and the carboxyl group of another where the OH group and the H group of either bond together to form a H20 molecule release. This frees up the bond between the carbon atom and a nitrogen atom where they will bothe bond together this bond is called a peptide bond

Question 8

What is the primary structure of a protein

Answer 8

The sequence or order of amino acids in a polypeptide chain

Question 9

What is the secondary structure of a protein

Answer 9

-hydrogen bonds form beteeen =o and -h of nearby peptide bonds
-these Hydrogen bonds pull the primary structure into an alpha helix or a beta pleated sheet

Question 10

What is the tertiary structure of a protein.

Answer 10

-the secondary structure folds into a more complex 3D shape pulled into position by
-hydrophobic and hydrophilic interaction
-ionic bonds
-hydrogen bonds
-disulgide bridges

Question 11

What is the quaternary structure of a protein

Answer 11

2 or more polypeptide chains bonded together