Biological Molecules: Amino Acids.

Question 1

How many different amino acids are there?

Answer 1

= 20 different.

Question 2

What is the structure of amino acids?

Answer 2

= amine group (H2N)
= carboxyl group (COOH)
= SAME

R group: is different for each amino acid.

Question 3

What elements are amino acids made from?

Answer 3

= carbon
= hydrogen
= nitrogen
= oxygen
= some contains sulfur.

Question 4

When 2 amino acids react together what happens?

Answer 4

= form an peptide bond
= molecule of water
= condensation
=

Question 5

What is the molecule called made from 2 amino acid molecules?

Answer 5

= Dipeptide

Question 6

Where does the condensation reaction for amino acids take place?

Answer 6

= Ribosomes.
= catalused by a specific enyzme

Question 7

If we join 3 or more amino acids what is the molecule called?

Answer 7

= Polypeptide.
= often contains 100’s of bonds

Question 8

How do we break the peptide bond?

Answer 8

= add a molecule of water
= carried out by protease

Question 9

How does the polpeptideclassify as a protien?

Answer 9

= polypeptide has to fold into a complex 3x dimensional shape
= it can carry irs function

Question 10

What can protiens contain?

Answer 10

= conist of several different polypeptides
= forms large + complex molecules
= contain other molecules